metal-organic compounds
2,9-Dimethyl-1,10-phenanthrolin-1-ium (6-carboxy-4-hydroxypyridine-2-carboxylato-κ3O2,N,O6)(4-hydroxypyridine-2,6-dicarboxylato-κ3O2,N,O6)nickelate(II) 2.35-hydrate: a proton-transfer compound
aDepartment of Chemistry, Faculty of Science, Islamic Azad University, Mahshahr Branch, Mahshahr, Iran, bDepartment of Chemistry, Faculty of Sciences, Islamic Azad University, Khorramabad Branch, Khorramabad, Iran, cIran Compiling Encyclopedia Foundation, Tajrish, Tehran, Iran, and dInstitute of Physics, University of Neuchâtel, rue Emile-Argand 11, CH-2009 Neuchâtel, Switzerland
*Correspondence e-mail: zderik@yahoo.com
The title proton-transfer compound, (C14H13N2)[Ni(C7H3NO5)(C7H4NO5)]·2.35H2O, consists of an [Ni(hypydc)(hypydcH)]− anion, a dmpH+ cation and 2.35 uncoordinated water molecules (where hypydcH2 = 4-hydroxypyridine-2,6-dicarboxylic acid and dmp = 2,9-dimethyl-1,10-phenanthroline). The NiII atom is coordinated by two N atoms and four O atoms from the carboxylate groups of the (hypydc)2− and (hypydcH)− ligands, forming a distorted octahedral environment. In the anion, the two pyridine rings are inclined to one another by 89.24 (10)°. In the crystal, cations are linked via O—H⋯O hydrogen bonds forming dimers, graph-set [R22(16)], centered about inversion centers. These dimers are further linked by other cation O—H⋯O hydrogen bonds, graph-set [R66(42)], forming a two-dimensional network in (011). Additional intermolecular O—H⋯O, N—H⋯O, N—H⋯N, and weak C—H⋯O hydrogen bonds, and π–π interactions [shortest centroid–centroid distance = 3.5442 (14) Å], connect the two dimensional networks, forming a three-dimensional arrangement. The H atoms of one of the methyl groups are disordered over two sites with equal occupancy.
Related literature
For literature on some first-row transition metal complexes of 4-hydroxypyridine-2,6-dicarboxlic acid and various bases, see: Aghabozorg, Roshan et al. (2008); Aghabozorg, Saadaty et al. (2008); Aghabozorg, Motyeian et al. (2008); Ghadermazi et al. (2009); Rafizadeh et al. (2008); Ramos Silva et al. (2008). For details of graph-set analysis, see: Bernstein et al. (1995).
Experimental
Crystal data
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Refinement
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Data collection: EXPOSE (Stoe & Cie, 2000); cell CELL (Stoe & Cie, 2000); data reduction: INTEGRATE (Stoe & Cie, 2000); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009) and Mercury (Macrae et al., 2006); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009).
Supporting information
https://doi.org/10.1107/S1600536810031399/lh5110sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810031399/lh5110Isup2.hkl
An aqueous solution of nickel(II) nitrate hexahydrate (0.5 mmol, 90 mg) in distilled water (5 ml) was added to an aqueous solution of 4-hydroxypyridine-2,6-dicarboxylic acid(1 mmol, 183 mg) in distilled water (20 ml) and 2,9-dimethyl-1,10-phenanthroline (1 mmol, 208 mg) in methanol (5 ml) under stirring at 333K in a 1:2:2 molar ratio for lh. Blue block-shaped crystals were obtained by slow evaporation of the solvent at the room temperature.
The water molecule O3W was only partially occupied and was refined with an occupancy of 0.35. Methyl group C28 was treated as an idealized disordered methyl group with two positions rotated from each other by 60°; each H-atom occupancy was set to 0.5. The water H-atoms were refined with distance restraints of O-H = 0.84 (2) Å and Uiso(H) = 1.5Ueq(O). The OH, NH and C-bound H-atoms were included in calculated positions and treated as riding on their parent atom: O-H = 0.83 Å, N-H = 0.87 Å, and C-H = 0.94 and 0.97 Å, for CH and CH3, respectively, with Uiso(H) = k × Ueq(O, N, or C), where k = 1.5 for CH3 H-atoms and 1.2 for all other H-atoms.
The crystal structures of a number of first-row proton transfer complexes, where 4-hydroxypyridine-2,6-dicarboxlic acid (hypydcH2) is the proton donor, have been reported previously (Ramos Silva et al., 2008; Aghabozorg, Saadaty et al., 2008; Aghabozorg, Roshan et al., 2008; Rafizadeh et al., 2008; Aghabozorg, Motyeian et al., 2008; Ghadermazi et al. 2009). Herein, we present the
of the title complex, prepared by the reaction of nickel(II) nitrate with the same proton donnor (hypydcH2) and the proton acceptor 2,9-dimethyl-1,10-phenanthroline (dmp).The κ3O2,N,O6)nickelate(II) dihydrate (Aghabozorg, Motyeian et al., 2008). In the dmpH+ cation there is a short N-H···N interaction as a result of the inherant planarity of the system (Table 1).
of the title compound consists of one [Ni(hypydc)(hypydcH)]- anion, one 2,9-dimethyl-1,10-phenanthrolinium cation (dmpH+) and 2.35 uncoordinated water molecules (Fig. 1). A carboxylic acid proton has been transferred to an N atom of 2,9-dimethyl-1,10-phenanthroline. In the anions, the NiII atom is six-coordinated by two N atoms (N1 and N2) that occupy the axial positions, and four O atoms, (O1, O3, O6 and O8) from the carboxylate groups of the (hypydc)2-and (hypydcH)- ligands, in the equitorial plane, so forming a distorted octahedral geometry. The (hypydc)2-and (hypydcH)- ligands are orthogonal; the two pyridine ring mean planes being inclined to one another by 89.24 (10)°. This geometry is simlar to that in the proton transfer nickel(II) complex Bis(guanidinium)bis(4-hydroxypyridine-2,6-dicarboxylato-In the crystal the cations are linked via O–H···O hydrogen bonds to form dimers - graph-set [R22(16)] - centered about inversion centers (Bernstein et al., 1995; Table 1, Fig 2). These dimers are further link by other cation O-H···O hydrogen bonds - graph-set [R66(42)] - to form a two-dimensional network in (011). Additional intermolecular O–H···O, N–H···O, N–H···N, and weak C–H···O hydrogen bonds connect these two dimensional networks to form a three-dimensional arrangeemt (Fig. 3).
Another feature of the π–π stacking interactions (Table 2). The shortest π–π distance is 3.5442 (14) Å involving pyridine ring (N2/C8-C12) of the (hypydc)2- anion and the central aromatic ring of the dmpH+ cation (C18-C21,C25-C26).
of the title compound is the presence ofFootnote for Table 1: Cg1 is the centroid of ring N1,C1-C5.
For literature on some first-row transition metal complexes of 4-hydroxypyridine-2,6-dicarboxlic acid and various bases, see: Aghabozorg, Roshan et al. (2008); Aghabozorg, Saadaty et al. (2008); Aghabozorg, Motyeian et al. (2008); Ghadermazi et al. (2009); Rafizadeh et al. (2008); Ramos Silva et al. (2008). For details of graph-set analysis, see: Bernstein et al. (1995).
Data collection: EXPOSE (Stoe & Cie, 2000); cell
CELL (Stoe & Cie, 2000); data reduction: INTEGRATE (Stoe & Cie, 2000); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009) and Mercury (Macrae et al., 2006); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).Fig. 1. The molecular structure of the title compound with the displacement ellipsoids drawn at the 50% probability level. | |
Fig. 2. A view along the a-axis of the O-H···O hydrogen bonded two-dimensional network in (011), showing the formation of the graph-sets [R22(16)] and [R66(42)]. H-atoms not involved in hydrogen bonding (cyan lines) have been omitted for clarity; symmetry codes: (i) -x, -y+2, -z; (ii) -x, y-0.5, -z+0.5. | |
Fig. 3. A view of along the a-axis of the crystal packing in the title compound. The Nickel complex is shown in black, the dmpH+ cation in red, and the water molecules are in blue, green and yellow; the various hydrogen bonds are shown as dashed lines - see Table 1 for details. |
(C14H13N2)[Ni(C7H3NO5)(C7H4NO5)]·2.35H2O | F(000) = 1390 |
Mr = 673.53 | Dx = 1.607 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 8000 reflections |
a = 11.1663 (8) Å | θ = 2.2–26.1° |
b = 9.7296 (9) Å | µ = 0.77 mm−1 |
c = 25.698 (2) Å | T = 223 K |
β = 94.330 (9)° | Block, pale-blue |
V = 2784.0 (4) Å3 | 0.34 × 0.30 × 0.23 mm |
Z = 4 |
Stoe IPDS diffractometer | 5442 independent reflections |
Radiation source: fine-focus sealed tube | 3321 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.049 |
φ rotation scans | θmax = 26.1°, θmin = 2.2° |
Absorption correction: multi-scan (MULscanABS in PLATON; Spek, 2009) | h = −13→12 |
Tmin = 0.820, Tmax = 0.839 | k = −12→11 |
21508 measured reflections | l = −31→31 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.032 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.071 | w = 1/[σ2(Fo2) + (0.0379P)2] where P = (Fo2 + 2Fc2)/3 |
S = 0.82 | (Δ/σ)max = 0.001 |
5442 reflections | Δρmax = 0.29 e Å−3 |
439 parameters | Δρmin = −0.49 e Å−3 |
6 restraints | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.0014 (3) |
(C14H13N2)[Ni(C7H3NO5)(C7H4NO5)]·2.35H2O | V = 2784.0 (4) Å3 |
Mr = 673.53 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 11.1663 (8) Å | µ = 0.77 mm−1 |
b = 9.7296 (9) Å | T = 223 K |
c = 25.698 (2) Å | 0.34 × 0.30 × 0.23 mm |
β = 94.330 (9)° |
Stoe IPDS diffractometer | 5442 independent reflections |
Absorption correction: multi-scan (MULscanABS in PLATON; Spek, 2009) | 3321 reflections with I > 2σ(I) |
Tmin = 0.820, Tmax = 0.839 | Rint = 0.049 |
21508 measured reflections |
R[F2 > 2σ(F2)] = 0.032 | 6 restraints |
wR(F2) = 0.071 | H atoms treated by a mixture of independent and constrained refinement |
S = 0.82 | Δρmax = 0.29 e Å−3 |
5442 reflections | Δρmin = −0.49 e Å−3 |
439 parameters |
Geometry. Bond distances, angles etc. have been calculated using the rounded fractional coordinates. All su's are estimated from the variances of the (full) variance-covariance matrix. The cell esds are taken into account in the estimation of distances, angles and torsion angles |
Refinement. The water H-atoms were refined with distance restraints of O-H = 0.84 (2) Å and Uiso(H) = 1.5Ueq(O). The OH, NH and C-bound H-atoms were included in calculated positions and treated as riding on their parent atom: O-H = 0.83 Å, N-H = 0.87 Å, C-H = 0.94 and 0.97 Å, for CH and CH3, respectively, with Uiso(H) = k × Ueq(O, N, or C), where k = 1.5 for CH3 H-atoms and 1.2 for all other H-atoms. The water molecule O3W was only partially occupied and was refined with an occupancy of 0.35. Methyl group C28 was treated as an idealized disordered methyl group with two positions rotated from each other by 60°; each H-atom occupancy was set to 0.5. |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
Ni1 | 0.14739 (3) | 0.96793 (3) | 0.15130 (1) | 0.0260 (1) | |
O1 | 0.15046 (15) | 1.07916 (16) | 0.22542 (6) | 0.0298 (5) | |
O2 | 0.25528 (15) | 1.07951 (16) | 0.30382 (6) | 0.0290 (5) | |
O3 | 0.21156 (15) | 0.82051 (17) | 0.09837 (6) | 0.0313 (6) | |
O4 | 0.34942 (19) | 0.6562 (2) | 0.09309 (8) | 0.0662 (9) | |
O5 | 0.58914 (17) | 0.7378 (2) | 0.27078 (7) | 0.0453 (7) | |
O6 | 0.01044 (16) | 0.82870 (16) | 0.17517 (6) | 0.0308 (5) | |
O7 | −0.18300 (17) | 0.77766 (19) | 0.15269 (7) | 0.0428 (7) | |
O8 | 0.21250 (15) | 1.14097 (17) | 0.11129 (6) | 0.0340 (6) | |
O9 | 0.15781 (17) | 1.28829 (18) | 0.04666 (7) | 0.0472 (7) | |
O10 | −0.25820 (15) | 1.06177 (19) | −0.01149 (6) | 0.0405 (7) | |
N1 | 0.28647 (17) | 0.88779 (18) | 0.19159 (7) | 0.0232 (6) | |
N2 | 0.00840 (16) | 1.02066 (19) | 0.10486 (6) | 0.0234 (6) | |
C1 | 0.3184 (2) | 0.9328 (2) | 0.23970 (8) | 0.0226 (7) | |
C2 | 0.4179 (2) | 0.8853 (2) | 0.26876 (8) | 0.0251 (7) | |
C3 | 0.4886 (2) | 0.7856 (3) | 0.24664 (9) | 0.0295 (8) | |
C4 | 0.4526 (2) | 0.7357 (2) | 0.19695 (9) | 0.0305 (8) | |
C5 | 0.3517 (2) | 0.7890 (2) | 0.17069 (8) | 0.0276 (8) | |
C6 | 0.2335 (2) | 1.0398 (2) | 0.25655 (8) | 0.0240 (7) | |
C7 | 0.3021 (2) | 0.7496 (3) | 0.11634 (9) | 0.0333 (9) | |
C8 | −0.0908 (2) | 0.9446 (2) | 0.10399 (8) | 0.0239 (7) | |
C9 | −0.1816 (2) | 0.9572 (3) | 0.06563 (8) | 0.0282 (7) | |
C10 | −0.1691 (2) | 1.0544 (2) | 0.02645 (8) | 0.0277 (8) | |
C11 | −0.0673 (2) | 1.1354 (2) | 0.02800 (8) | 0.0254 (7) | |
C12 | 0.0207 (2) | 1.1152 (2) | 0.06783 (8) | 0.0248 (7) | |
C13 | −0.0863 (2) | 0.8416 (2) | 0.14803 (9) | 0.0286 (8) | |
C14 | 0.1396 (2) | 1.1890 (2) | 0.07497 (9) | 0.0315 (8) | |
N3 | 0.85534 (18) | 0.40284 (19) | 0.10413 (7) | 0.0285 (6) | |
N4 | 0.64764 (19) | 0.2613 (2) | 0.08013 (8) | 0.0378 (8) | |
C15 | 0.9561 (2) | 0.4758 (3) | 0.11221 (9) | 0.0297 (7) | |
C16 | 1.0299 (2) | 0.4506 (3) | 0.15731 (9) | 0.0378 (9) | |
C17 | 1.0007 (2) | 0.3517 (3) | 0.19177 (9) | 0.0361 (9) | |
C18 | 0.8949 (2) | 0.2752 (2) | 0.18279 (9) | 0.0305 (8) | |
C19 | 0.8601 (3) | 0.1697 (3) | 0.21716 (10) | 0.0380 (9) | |
C20 | 0.7587 (3) | 0.0981 (3) | 0.20579 (10) | 0.0404 (10) | |
C21 | 0.6824 (2) | 0.1255 (3) | 0.15974 (10) | 0.0362 (9) | |
C22 | 0.5769 (3) | 0.0533 (3) | 0.14537 (12) | 0.0522 (11) | |
C23 | 0.5108 (3) | 0.0846 (3) | 0.10047 (12) | 0.0572 (11) | |
C24 | 0.5487 (3) | 0.1909 (3) | 0.06806 (11) | 0.0481 (10) | |
C25 | 0.7134 (2) | 0.2290 (3) | 0.12506 (9) | 0.0319 (8) | |
C26 | 0.8214 (2) | 0.3034 (2) | 0.13757 (9) | 0.0277 (8) | |
C27 | 0.9852 (3) | 0.5789 (3) | 0.07223 (10) | 0.0409 (9) | |
C28 | 0.4771 (3) | 0.2259 (4) | 0.01801 (12) | 0.0692 (14) | |
O1W | 0.7549 (2) | 0.4759 (2) | 0.00287 (7) | 0.0628 (9) | |
O2W | 0.3478 (2) | 0.3691 (2) | 0.14479 (9) | 0.0670 (9) | |
O3W | 0.5288 (6) | 0.4962 (6) | 0.1014 (2) | 0.059 (2) | 0.350 |
H2 | 0.43790 | 0.91880 | 0.30260 | 0.0300* | |
H2O | 0.21100 | 1.14540 | 0.30970 | 0.0430* | |
H4 | 0.49690 | 0.66640 | 0.18170 | 0.0370* | |
H5O | 0.60140 | 0.77650 | 0.29950 | 0.0680* | |
H9 | −0.25060 | 0.90200 | 0.06560 | 0.0340* | |
H10O | −0.23970 | 1.11730 | −0.03410 | 0.0610* | |
H11 | −0.05830 | 1.20280 | 0.00240 | 0.0310* | |
H3 | 0.80880 | 0.41940 | 0.07610 | 0.0340* | |
H16 | 1.10050 | 0.50230 | 0.16410 | 0.0450* | |
H17 | 1.05200 | 0.33470 | 0.22180 | 0.0430* | |
H19 | 0.90830 | 0.15030 | 0.24790 | 0.0460* | |
H20 | 0.73740 | 0.02830 | 0.22860 | 0.0480* | |
H22 | 0.55160 | −0.01730 | 0.16690 | 0.0630* | |
H23 | 0.43990 | 0.03570 | 0.09090 | 0.0690* | |
H27A | 0.91230 | 0.62570 | 0.05920 | 0.0610* | |
H27B | 1.02040 | 0.53280 | 0.04360 | 0.0610* | |
H27C | 1.04180 | 0.64540 | 0.08780 | 0.0610* | |
H28A | 0.48890 | 0.32200 | 0.00980 | 0.1040* | 0.500 |
H28B | 0.39260 | 0.20920 | 0.02190 | 0.1040* | 0.500 |
H28C | 0.50360 | 0.16920 | −0.01000 | 0.1040* | 0.500 |
H28D | 0.43450 | 0.14490 | 0.00470 | 0.1040* | 0.500 |
H28E | 0.53080 | 0.25780 | −0.00740 | 0.1040* | 0.500 |
H28F | 0.41980 | 0.29770 | 0.02440 | 0.1040* | 0.500 |
H1WA | 0.769 (4) | 0.551 (2) | −0.0102 (14) | 0.0940* | |
H1WB | 0.715 (3) | 0.426 (3) | −0.0187 (12) | 0.0940* | |
H2WA | 0.307 (3) | 0.312 (3) | 0.1262 (13) | 0.1000* | |
H2WB | 0.352 (4) | 0.445 (2) | 0.1319 (14) | 0.1000* | |
H3WA | 0.506 (9) | 0.576 (5) | 0.091 (4) | 0.0880* | 0.350 |
H3WB | 0.568 (8) | 0.470 (11) | 0.077 (3) | 0.0880* | 0.350 |
U11 | U22 | U33 | U12 | U13 | U23 | |
Ni1 | 0.0257 (2) | 0.0274 (2) | 0.0242 (2) | −0.0010 (2) | −0.0024 (1) | 0.0008 (1) |
O1 | 0.0285 (10) | 0.0309 (9) | 0.0290 (8) | 0.0058 (7) | −0.0042 (8) | −0.0019 (7) |
O2 | 0.0354 (10) | 0.0282 (9) | 0.0232 (8) | 0.0086 (7) | 0.0003 (7) | −0.0042 (7) |
O3 | 0.0323 (11) | 0.0367 (10) | 0.0243 (8) | −0.0016 (8) | −0.0021 (8) | −0.0020 (7) |
O4 | 0.0577 (15) | 0.0876 (17) | 0.0509 (12) | 0.0291 (13) | −0.0117 (11) | −0.0451 (12) |
O5 | 0.0437 (13) | 0.0535 (12) | 0.0366 (10) | 0.0256 (10) | −0.0112 (9) | −0.0100 (9) |
O6 | 0.0339 (11) | 0.0323 (9) | 0.0257 (8) | 0.0008 (8) | −0.0002 (8) | 0.0056 (7) |
O7 | 0.0367 (12) | 0.0463 (11) | 0.0451 (11) | −0.0130 (9) | 0.0020 (9) | 0.0193 (9) |
O8 | 0.0284 (10) | 0.0358 (10) | 0.0366 (10) | −0.0092 (8) | −0.0044 (8) | 0.0017 (8) |
O9 | 0.0497 (13) | 0.0363 (11) | 0.0551 (12) | −0.0168 (9) | 0.0013 (10) | 0.0150 (9) |
O10 | 0.0315 (11) | 0.0624 (14) | 0.0265 (9) | −0.0060 (9) | −0.0059 (8) | 0.0124 (8) |
N1 | 0.0231 (11) | 0.0243 (10) | 0.0220 (10) | −0.0004 (8) | 0.0006 (8) | −0.0015 (8) |
N2 | 0.0249 (11) | 0.0219 (9) | 0.0231 (9) | −0.0007 (9) | 0.0001 (8) | 0.0001 (8) |
C1 | 0.0248 (13) | 0.0226 (12) | 0.0206 (11) | −0.0019 (9) | 0.0030 (10) | −0.0012 (9) |
C2 | 0.0294 (14) | 0.0252 (12) | 0.0204 (11) | 0.0012 (10) | −0.0007 (10) | 0.0002 (9) |
C3 | 0.0295 (15) | 0.0299 (12) | 0.0284 (12) | 0.0061 (11) | −0.0021 (11) | 0.0021 (10) |
C4 | 0.0321 (15) | 0.0297 (13) | 0.0299 (13) | 0.0089 (11) | 0.0032 (11) | −0.0043 (10) |
C5 | 0.0316 (15) | 0.0271 (13) | 0.0240 (12) | −0.0025 (11) | 0.0021 (11) | −0.0039 (10) |
C6 | 0.0256 (13) | 0.0215 (11) | 0.0247 (11) | −0.0025 (11) | 0.0012 (10) | 0.0008 (10) |
C7 | 0.0313 (16) | 0.0401 (16) | 0.0282 (13) | 0.0000 (12) | 0.0007 (11) | −0.0057 (12) |
C8 | 0.0230 (13) | 0.0253 (13) | 0.0235 (11) | −0.0025 (10) | 0.0029 (10) | −0.0006 (9) |
C9 | 0.0220 (13) | 0.0364 (14) | 0.0260 (11) | −0.0068 (11) | 0.0015 (10) | 0.0017 (11) |
C10 | 0.0261 (14) | 0.0361 (15) | 0.0206 (11) | 0.0042 (11) | 0.0001 (10) | 0.0015 (10) |
C11 | 0.0277 (14) | 0.0269 (13) | 0.0218 (11) | 0.0022 (11) | 0.0029 (10) | 0.0040 (9) |
C12 | 0.0287 (14) | 0.0193 (12) | 0.0269 (12) | −0.0021 (10) | 0.0050 (10) | −0.0005 (9) |
C13 | 0.0339 (16) | 0.0272 (13) | 0.0247 (12) | −0.0012 (12) | 0.0027 (12) | 0.0021 (10) |
C14 | 0.0311 (16) | 0.0301 (14) | 0.0334 (14) | −0.0032 (11) | 0.0023 (12) | −0.0019 (11) |
N3 | 0.0318 (12) | 0.0292 (11) | 0.0243 (10) | 0.0022 (9) | 0.0007 (9) | −0.0026 (8) |
N4 | 0.0284 (13) | 0.0515 (14) | 0.0333 (12) | −0.0057 (11) | 0.0021 (10) | −0.0028 (10) |
C15 | 0.0296 (14) | 0.0297 (12) | 0.0299 (12) | −0.0017 (12) | 0.0029 (10) | −0.0064 (11) |
C16 | 0.0349 (16) | 0.0407 (16) | 0.0373 (14) | −0.0067 (13) | −0.0009 (12) | −0.0061 (12) |
C17 | 0.0386 (17) | 0.0383 (15) | 0.0301 (13) | 0.0061 (13) | −0.0061 (12) | −0.0049 (11) |
C18 | 0.0362 (16) | 0.0290 (13) | 0.0266 (12) | 0.0072 (11) | 0.0051 (11) | −0.0043 (10) |
C19 | 0.0487 (19) | 0.0346 (15) | 0.0314 (14) | 0.0103 (13) | 0.0069 (13) | 0.0016 (11) |
C20 | 0.056 (2) | 0.0307 (14) | 0.0364 (15) | 0.0029 (14) | 0.0161 (14) | 0.0036 (12) |
C21 | 0.0389 (17) | 0.0351 (14) | 0.0362 (14) | −0.0027 (12) | 0.0137 (13) | −0.0034 (11) |
C22 | 0.051 (2) | 0.056 (2) | 0.0519 (18) | −0.0163 (16) | 0.0190 (15) | −0.0012 (15) |
C23 | 0.0418 (19) | 0.074 (2) | 0.0570 (19) | −0.0245 (16) | 0.0112 (16) | −0.0073 (16) |
C24 | 0.0316 (17) | 0.069 (2) | 0.0441 (16) | −0.0098 (15) | 0.0051 (13) | −0.0071 (14) |
C25 | 0.0298 (15) | 0.0364 (14) | 0.0304 (13) | −0.0007 (11) | 0.0081 (11) | −0.0047 (11) |
C26 | 0.0304 (15) | 0.0268 (13) | 0.0267 (12) | 0.0023 (11) | 0.0066 (11) | −0.0038 (10) |
C27 | 0.0492 (18) | 0.0384 (15) | 0.0354 (14) | −0.0116 (13) | 0.0053 (13) | −0.0033 (11) |
C28 | 0.037 (2) | 0.112 (3) | 0.057 (2) | −0.0174 (19) | −0.0064 (16) | −0.0023 (19) |
O1W | 0.0982 (19) | 0.0473 (13) | 0.0392 (11) | −0.0271 (13) | −0.0194 (11) | 0.0131 (10) |
O2W | 0.0778 (18) | 0.0594 (16) | 0.0572 (14) | −0.0216 (13) | −0.0377 (12) | 0.0033 (11) |
O3W | 0.061 (4) | 0.048 (4) | 0.066 (4) | 0.019 (3) | −0.007 (3) | −0.007 (3) |
Ni1—O1 | 2.1887 (16) | C8—C9 | 1.365 (3) |
Ni1—O3 | 2.1373 (17) | C8—C13 | 1.510 (3) |
Ni1—O6 | 2.1660 (17) | C9—C10 | 1.396 (3) |
Ni1—O8 | 2.1291 (17) | C10—C11 | 1.381 (3) |
Ni1—N1 | 1.9619 (19) | C11—C12 | 1.378 (3) |
Ni1—N2 | 1.9536 (17) | C12—C14 | 1.508 (3) |
O1—C6 | 1.239 (3) | C2—H2 | 0.9400 |
O2—C6 | 1.280 (3) | C4—H4 | 0.9400 |
O3—C7 | 1.281 (3) | C9—H9 | 0.9400 |
O4—C7 | 1.229 (3) | C11—H11 | 0.9400 |
O5—C3 | 1.325 (3) | C15—C16 | 1.392 (3) |
O6—C13 | 1.247 (3) | C15—C27 | 1.489 (4) |
O7—C13 | 1.260 (3) | C16—C17 | 1.364 (4) |
O8—C14 | 1.280 (3) | C17—C18 | 1.401 (3) |
O9—C14 | 1.235 (3) | C18—C19 | 1.427 (4) |
O10—C10 | 1.341 (3) | C18—C26 | 1.398 (3) |
O2—H2O | 0.8300 | C19—C20 | 1.343 (5) |
O5—H5O | 0.8300 | C20—C21 | 1.430 (4) |
O10—H10O | 0.8300 | C21—C22 | 1.397 (4) |
O1W—H1WA | 0.82 (2) | C21—C25 | 1.405 (4) |
O1W—H1WB | 0.84 (3) | C22—C23 | 1.357 (4) |
O2W—H2WB | 0.81 (2) | C23—C24 | 1.413 (4) |
O2W—H2WA | 0.84 (3) | C24—C28 | 1.501 (4) |
O3W—H3WB | 0.83 (8) | C25—C26 | 1.422 (3) |
O3W—H3WA | 0.85 (6) | C16—H16 | 0.9400 |
N1—C5 | 1.342 (3) | C17—H17 | 0.9400 |
N1—C1 | 1.335 (3) | C19—H19 | 0.9400 |
N2—C12 | 1.338 (3) | C20—H20 | 0.9400 |
N2—C8 | 1.331 (3) | C22—H22 | 0.9400 |
N3—C15 | 1.333 (3) | C23—H23 | 0.9400 |
N3—C26 | 1.367 (3) | C27—H27B | 0.9700 |
N4—C24 | 1.317 (4) | C27—H27A | 0.9700 |
N4—C25 | 1.358 (3) | C27—H27C | 0.9700 |
N3—H3 | 0.8700 | C28—H28F | 0.9700 |
C1—C2 | 1.371 (3) | C28—H28A | 0.9700 |
C1—C6 | 1.494 (3) | C28—H28B | 0.9700 |
C2—C3 | 1.398 (3) | C28—H28C | 0.9700 |
C3—C4 | 1.397 (3) | C28—H28D | 0.9700 |
C4—C5 | 1.371 (3) | C28—H28E | 0.9700 |
C5—C7 | 1.513 (3) | ||
O1—Ni1—O3 | 154.38 (6) | C3—C2—H2 | 121.00 |
O1—Ni1—O6 | 91.59 (6) | C3—C4—H4 | 120.00 |
O1—Ni1—O8 | 92.62 (6) | C5—C4—H4 | 120.00 |
O1—Ni1—N1 | 77.14 (7) | C8—C9—H9 | 121.00 |
O1—Ni1—N2 | 111.18 (7) | C10—C9—H9 | 121.00 |
O3—Ni1—O6 | 92.20 (6) | C12—C11—H11 | 121.00 |
O3—Ni1—O8 | 94.60 (6) | C10—C11—H11 | 121.00 |
O3—Ni1—N1 | 77.24 (7) | C16—C15—C27 | 123.1 (2) |
O3—Ni1—N2 | 94.39 (7) | N3—C15—C16 | 118.4 (2) |
O6—Ni1—O8 | 154.88 (7) | N3—C15—C27 | 118.5 (2) |
O6—Ni1—N1 | 98.61 (7) | C15—C16—C17 | 120.6 (2) |
O6—Ni1—N2 | 77.99 (7) | C16—C17—C18 | 120.5 (2) |
O8—Ni1—N1 | 106.47 (7) | C17—C18—C19 | 123.1 (2) |
O8—Ni1—N2 | 77.40 (7) | C19—C18—C26 | 119.0 (2) |
N1—Ni1—N2 | 170.92 (8) | C17—C18—C26 | 117.9 (2) |
Ni1—O1—C6 | 111.77 (14) | C18—C19—C20 | 120.2 (2) |
Ni1—O3—C7 | 115.18 (15) | C19—C20—C21 | 121.6 (3) |
Ni1—O6—C13 | 112.27 (14) | C20—C21—C22 | 124.3 (3) |
Ni1—O8—C14 | 114.80 (14) | C22—C21—C25 | 115.8 (2) |
C6—O2—H2O | 109.00 | C20—C21—C25 | 119.9 (2) |
C3—O5—H5O | 109.00 | C21—C22—C23 | 120.4 (3) |
C10—O10—H10O | 109.00 | C22—C23—C24 | 119.9 (3) |
H1WA—O1W—H1WB | 111 (3) | N4—C24—C28 | 117.8 (3) |
H2WA—O2W—H2WB | 114 (3) | N4—C24—C23 | 121.7 (3) |
H3WA—O3W—H3WB | 102 (10) | C23—C24—C28 | 120.5 (3) |
Ni1—N1—C1 | 120.26 (15) | N4—C25—C21 | 124.2 (2) |
C1—N1—C5 | 119.38 (19) | C21—C25—C26 | 117.8 (2) |
Ni1—N1—C5 | 120.35 (14) | N4—C25—C26 | 118.0 (2) |
C8—N2—C12 | 120.02 (18) | C18—C26—C25 | 121.5 (2) |
Ni1—N2—C8 | 119.08 (14) | N3—C26—C18 | 119.2 (2) |
Ni1—N2—C12 | 119.71 (15) | N3—C26—C25 | 119.3 (2) |
C15—N3—C26 | 123.4 (2) | C15—C16—H16 | 120.00 |
C24—N4—C25 | 118.1 (2) | C17—C16—H16 | 120.00 |
C15—N3—H3 | 118.00 | C18—C17—H17 | 120.00 |
C26—N3—H3 | 118.00 | C16—C17—H17 | 120.00 |
N1—C1—C6 | 111.48 (18) | C18—C19—H19 | 120.00 |
C2—C1—C6 | 125.65 (19) | C20—C19—H19 | 120.00 |
N1—C1—C2 | 122.87 (19) | C19—C20—H20 | 119.00 |
C1—C2—C3 | 118.13 (19) | C21—C20—H20 | 119.00 |
O5—C3—C4 | 118.8 (2) | C23—C22—H22 | 120.00 |
C2—C3—C4 | 118.7 (2) | C21—C22—H22 | 120.00 |
O5—C3—C2 | 122.5 (2) | C22—C23—H23 | 120.00 |
C3—C4—C5 | 119.2 (2) | C24—C23—H23 | 120.00 |
C4—C5—C7 | 126.1 (2) | C15—C27—H27B | 110.00 |
N1—C5—C4 | 121.64 (19) | H27A—C27—H27C | 109.00 |
N1—C5—C7 | 112.27 (19) | C15—C27—H27C | 110.00 |
O1—C6—O2 | 126.8 (2) | H27A—C27—H27B | 109.00 |
O1—C6—C1 | 119.26 (18) | C15—C27—H27A | 109.00 |
O2—C6—C1 | 113.95 (18) | H27B—C27—H27C | 109.00 |
O3—C7—C5 | 114.9 (2) | C24—C28—H28C | 110.00 |
O4—C7—C5 | 119.7 (2) | C24—C28—H28E | 109.00 |
O3—C7—O4 | 125.4 (2) | C24—C28—H28F | 110.00 |
N2—C8—C9 | 122.3 (2) | C24—C28—H28D | 109.00 |
C9—C8—C13 | 125.6 (2) | C24—C28—H28A | 109.00 |
N2—C8—C13 | 112.08 (18) | C24—C28—H28B | 109.00 |
C8—C9—C10 | 118.2 (2) | H28A—C28—H28E | 56.00 |
C9—C10—C11 | 119.5 (2) | H28A—C28—H28F | 56.00 |
O10—C10—C9 | 116.83 (19) | H28B—C28—H28C | 110.00 |
O10—C10—C11 | 123.65 (19) | H28B—C28—H28D | 56.00 |
C10—C11—C12 | 118.62 (19) | H28B—C28—H28E | 141.00 |
N2—C12—C14 | 112.17 (18) | H28B—C28—H28F | 56.00 |
N2—C12—C11 | 121.4 (2) | H28C—C28—H28D | 56.00 |
C11—C12—C14 | 126.44 (19) | H28C—C28—H28E | 56.00 |
O7—C13—C8 | 114.8 (2) | H28C—C28—H28F | 141.00 |
O6—C13—O7 | 127.6 (2) | H28D—C28—H28E | 110.00 |
O6—C13—C8 | 117.68 (19) | H28D—C28—H28F | 109.00 |
O8—C14—C12 | 114.87 (18) | H28E—C28—H28F | 109.00 |
O8—C14—O9 | 126.2 (2) | H28A—C28—H28B | 109.00 |
O9—C14—C12 | 118.9 (2) | H28A—C28—H28C | 109.00 |
C1—C2—H2 | 121.00 | H28A—C28—H28D | 141.00 |
O3—Ni1—O1—C6 | −0.8 (2) | C24—N4—C25—C21 | −0.3 (4) |
O6—Ni1—O1—C6 | 97.65 (15) | C25—N4—C24—C23 | 0.0 (4) |
O8—Ni1—O1—C6 | −107.12 (15) | C25—N4—C24—C28 | −179.3 (3) |
N1—Ni1—O1—C6 | −0.82 (15) | C24—N4—C25—C26 | 178.9 (2) |
N2—Ni1—O1—C6 | 175.38 (14) | N1—C1—C2—C3 | 0.2 (3) |
O1—Ni1—O3—C7 | 2.0 (3) | N1—C1—C6—O2 | 175.37 (18) |
O6—Ni1—O3—C7 | −96.33 (17) | C6—C1—C2—C3 | −179.3 (2) |
O8—Ni1—O3—C7 | 107.87 (17) | N1—C1—C6—O1 | −3.4 (3) |
N1—Ni1—O3—C7 | 2.00 (17) | C2—C1—C6—O1 | 176.1 (2) |
N2—Ni1—O3—C7 | −174.44 (17) | C2—C1—C6—O2 | −5.2 (3) |
O1—Ni1—O6—C13 | 114.42 (15) | C1—C2—C3—C4 | −2.2 (3) |
O3—Ni1—O6—C13 | −90.93 (15) | C1—C2—C3—O5 | 177.0 (2) |
O8—Ni1—O6—C13 | 14.8 (2) | C2—C3—C4—C5 | 2.2 (3) |
N1—Ni1—O6—C13 | −168.35 (15) | O5—C3—C4—C5 | −177.1 (2) |
N2—Ni1—O6—C13 | 3.09 (15) | C3—C4—C5—C7 | 178.3 (2) |
O1—Ni1—O8—C14 | −116.33 (15) | C3—C4—C5—N1 | −0.1 (3) |
O3—Ni1—O8—C14 | 88.27 (15) | N1—C5—C7—O3 | 3.5 (3) |
O6—Ni1—O8—C14 | −16.9 (2) | N1—C5—C7—O4 | −176.9 (2) |
N1—Ni1—O8—C14 | 166.30 (15) | C4—C5—C7—O4 | 4.5 (4) |
N2—Ni1—O8—C14 | −5.21 (15) | C4—C5—C7—O3 | −175.1 (2) |
O1—Ni1—N1—C1 | −1.16 (16) | N2—C8—C9—C10 | −0.5 (3) |
O1—Ni1—N1—C5 | −179.94 (17) | C13—C8—C9—C10 | −177.3 (2) |
O3—Ni1—N1—C1 | 178.86 (18) | N2—C8—C13—O6 | −8.0 (3) |
O3—Ni1—N1—C5 | 0.09 (16) | N2—C8—C13—O7 | 172.29 (19) |
O6—Ni1—N1—C1 | −90.83 (17) | C9—C8—C13—O6 | 169.1 (2) |
O6—Ni1—N1—C5 | 90.40 (16) | C9—C8—C13—O7 | −10.6 (3) |
O8—Ni1—N1—C1 | 87.78 (17) | C8—C9—C10—O10 | 178.2 (2) |
O8—Ni1—N1—C5 | −90.99 (17) | C8—C9—C10—C11 | −0.9 (3) |
O1—Ni1—N2—C8 | −95.09 (16) | C9—C10—C11—C12 | 1.6 (3) |
O1—Ni1—N2—C12 | 97.40 (16) | O10—C10—C11—C12 | −177.5 (2) |
O3—Ni1—N2—C8 | 83.25 (16) | C10—C11—C12—C14 | 177.4 (2) |
O3—Ni1—N2—C12 | −84.27 (16) | C10—C11—C12—N2 | −0.8 (3) |
O6—Ni1—N2—C8 | −8.07 (15) | N2—C12—C14—O8 | 6.5 (3) |
O6—Ni1—N2—C12 | −175.58 (17) | C11—C12—C14—O8 | −171.8 (2) |
O8—Ni1—N2—C8 | 176.99 (16) | C11—C12—C14—O9 | 8.8 (3) |
O8—Ni1—N2—C12 | 9.48 (15) | N2—C12—C14—O9 | −172.8 (2) |
Ni1—O1—C6—O2 | −176.12 (18) | N3—C15—C16—C17 | 1.3 (4) |
Ni1—O1—C6—C1 | 2.5 (2) | C27—C15—C16—C17 | −177.8 (3) |
Ni1—O3—C7—O4 | 176.9 (2) | C15—C16—C17—C18 | −1.0 (4) |
Ni1—O3—C7—C5 | −3.5 (3) | C16—C17—C18—C19 | 179.5 (2) |
Ni1—O6—C13—O7 | −178.64 (19) | C16—C17—C18—C26 | 0.2 (4) |
Ni1—O6—C13—C8 | 1.7 (2) | C17—C18—C19—C20 | −178.6 (3) |
Ni1—O8—C14—O9 | −179.95 (19) | C26—C18—C19—C20 | 0.6 (4) |
Ni1—O8—C14—C12 | 0.8 (2) | C17—C18—C26—N3 | 0.3 (3) |
Ni1—N1—C1—C2 | −176.87 (16) | C17—C18—C26—C25 | 179.0 (2) |
Ni1—N1—C1—C6 | 2.6 (2) | C19—C18—C26—N3 | −179.0 (2) |
C5—N1—C1—C2 | 1.9 (3) | C19—C18—C26—C25 | −0.3 (3) |
C5—N1—C1—C6 | −178.60 (18) | C18—C19—C20—C21 | −0.6 (4) |
Ni1—N1—C5—C4 | 176.87 (16) | C19—C20—C21—C22 | 179.0 (3) |
Ni1—N1—C5—C7 | −1.8 (2) | C19—C20—C21—C25 | 0.3 (4) |
C1—N1—C5—C4 | −1.9 (3) | C20—C21—C22—C23 | −178.9 (3) |
C1—N1—C5—C7 | 179.42 (19) | C25—C21—C22—C23 | −0.2 (4) |
Ni1—N2—C8—C9 | −166.20 (18) | C20—C21—C25—N4 | 179.2 (2) |
Ni1—N2—C8—C13 | 11.0 (2) | C20—C21—C25—C26 | 0.0 (4) |
C12—N2—C8—C9 | 1.3 (3) | C22—C21—C25—N4 | 0.4 (4) |
C12—N2—C8—C13 | 178.47 (18) | C22—C21—C25—C26 | −178.8 (2) |
Ni1—N2—C12—C11 | 166.80 (16) | C21—C22—C23—C24 | −0.1 (5) |
Ni1—N2—C12—C14 | −11.7 (2) | C22—C23—C24—N4 | 0.2 (5) |
C8—N2—C12—C11 | −0.6 (3) | C22—C23—C24—C28 | 179.5 (3) |
C8—N2—C12—C14 | −179.07 (18) | N4—C25—C26—N3 | −0.5 (3) |
C15—N3—C26—C18 | 0.0 (3) | N4—C25—C26—C18 | −179.2 (2) |
C26—N3—C15—C16 | −0.8 (4) | C21—C25—C26—N3 | 178.7 (2) |
C26—N3—C15—C27 | 178.4 (2) | C21—C25—C26—C18 | 0.0 (4) |
C15—N3—C26—C25 | −178.7 (2) |
Cg1 is the centroid of the N1,C1–C5. |
D—H···A | D—H | H···A | D···A | D—H···A |
O1W—H1WA···O9i | 0.82 (2) | 2.03 (3) | 2.832 (3) | 166 (4) |
O1W—H1WB···O4ii | 0.84 (3) | 2.15 (3) | 2.942 (3) | 158 (3) |
O2—H2O···O7iii | 0.83 | 1.65 | 2.399 (2) | 148 |
N3—H3···O1W | 0.87 | 2.01 | 2.845 (3) | 161 |
N3—H3···N4 | 0.87 | 2.38 | 2.728 (3) | 105 |
O2W—H2WA···O8iv | 0.84 (3) | 1.99 (3) | 2.785 (3) | 156 (3) |
O2W—H2WA···O9iv | 0.84 (3) | 2.55 (3) | 3.267 (3) | 144 (3) |
O2W—H2WB···O4 | 0.81 (2) | 2.28 (2) | 3.094 (3) | 176 (5) |
O5—H5O···O2Wv | 0.83 | 1.75 | 2.570 (3) | 169 |
O10—H10O···O3vi | 0.83 | 1.81 | 2.597 (2) | 158 |
C27—H27C···O3vii | 0.97 | 2.55 | 3.480 (4) | 161 |
C22—H22···Cg1iv | 0.94 | 2.76 | 3.635 (3) | 155 |
Symmetry codes: (i) −x+1, −y+2, −z; (ii) −x+1, −y+1, −z; (iii) −x, y+1/2, −z+1/2; (iv) x, y−1, z; (v) −x+1, y+1/2, −z+1/2; (vi) −x, −y+2, −z; (vii) x+1, y, z. |
Experimental details
Crystal data | |
Chemical formula | (C14H13N2)[Ni(C7H3NO5)(C7H4NO5)]·2.35H2O |
Mr | 673.53 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 223 |
a, b, c (Å) | 11.1663 (8), 9.7296 (9), 25.698 (2) |
β (°) | 94.330 (9) |
V (Å3) | 2784.0 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.77 |
Crystal size (mm) | 0.34 × 0.30 × 0.23 |
Data collection | |
Diffractometer | Stoe IPDS |
Absorption correction | Multi-scan (MULscanABS in PLATON; Spek, 2009) |
Tmin, Tmax | 0.820, 0.839 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 21508, 5442, 3321 |
Rint | 0.049 |
(sin θ/λ)max (Å−1) | 0.619 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.032, 0.071, 0.82 |
No. of reflections | 5442 |
No. of parameters | 439 |
No. of restraints | 6 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.29, −0.49 |
Computer programs: EXPOSE (Stoe & Cie, 2000), CELL (Stoe & Cie, 2000), INTEGRATE (Stoe & Cie, 2000), SHELXS97 (Sheldrick, 2008), PLATON (Spek, 2009) and Mercury (Macrae et al., 2006), SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009).
Cg1 is the centroid of the N1,C1–C5. |
D—H···A | D—H | H···A | D···A | D—H···A |
O1W—H1WA···O9i | 0.82 (2) | 2.03 (3) | 2.832 (3) | 166 (4) |
O1W—H1WB···O4ii | 0.84 (3) | 2.15 (3) | 2.942 (3) | 158 (3) |
O2—H2O···O7iii | 0.83 | 1.65 | 2.399 (2) | 148 |
N3—H3···O1W | 0.87 | 2.01 | 2.845 (3) | 161 |
N3—H3···N4 | 0.87 | 2.38 | 2.728 (3) | 105 |
O2W—H2WA···O8iv | 0.84 (3) | 1.99 (3) | 2.785 (3) | 156 (3) |
O2W—H2WA···O9iv | 0.84 (3) | 2.55 (3) | 3.267 (3) | 144 (3) |
O2W—H2WB···O4 | 0.81 (2) | 2.28 (2) | 3.094 (3) | 176 (5) |
O5—H5O···O2Wv | 0.83 | 1.75 | 2.570 (3) | 169 |
O10—H10O···O3vi | 0.83 | 1.81 | 2.597 (2) | 158 |
C27—H27C···O3vii | 0.97 | 2.55 | 3.480 (4) | 161 |
C22—H22···Cg1iv | 0.94 | 2.76 | 3.635 (3) | 155 |
Symmetry codes: (i) −x+1, −y+2, −z; (ii) −x+1, −y+1, −z; (iii) −x, y+1/2, −z+1/2; (iv) x, y−1, z; (v) −x+1, y+1/2, −z+1/2; (vi) −x, −y+2, −z; (vii) x+1, y, z. |
Cg1 is the centroid of ring N1,C1-C5; Cg2 is the centroid of ring N2,C8-C12; Cg3 is the centroid of ring N3,C15-C18,C26; Cg4 is the centroid of ring N4,C21-C25; Cg5 is the centroid of ring C18-C19,C25,C26;
Symmetry codes : (i) -x+1, y+0.5, -z+0.5; (ii) x-1, y+1, z top
CgI | CgJ | Centroid-to-Centroid |
Cg1 | Cg5i | 3.7818 (14) |
Cg2 | Cg3ii | 3.9022 (13) |
Cg2 | Cg4ii | 3.8946 (15) |
Cg2 | Cg5ii | 3.5442 (14) |
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The crystal structures of a number of first-row proton transfer complexes, where 4-hydroxypyridine-2,6-dicarboxlic acid (hypydcH2) is the proton donor, have been reported previously (Ramos Silva et al., 2008; Aghabozorg, Saadaty et al., 2008; Aghabozorg, Roshan et al., 2008; Rafizadeh et al., 2008; Aghabozorg, Motyeian et al., 2008; Ghadermazi et al. 2009). Herein, we present the crystal structure of the title complex, prepared by the reaction of nickel(II) nitrate with the same proton donnor (hypydcH2) and the proton acceptor 2,9-dimethyl-1,10-phenanthroline (dmp).
The asymmetric unit of the title compound consists of one [Ni(hypydc)(hypydcH)]- anion, one 2,9-dimethyl-1,10-phenanthrolinium cation (dmpH+) and 2.35 uncoordinated water molecules (Fig. 1). A carboxylic acid proton has been transferred to an N atom of 2,9-dimethyl-1,10-phenanthroline. In the anions, the NiII atom is six-coordinated by two N atoms (N1 and N2) that occupy the axial positions, and four O atoms, (O1, O3, O6 and O8) from the carboxylate groups of the (hypydc)2-and (hypydcH)- ligands, in the equitorial plane, so forming a distorted octahedral geometry. The (hypydc)2-and (hypydcH)- ligands are orthogonal; the two pyridine ring mean planes being inclined to one another by 89.24 (10)°. This geometry is simlar to that in the proton transfer nickel(II) complex Bis(guanidinium)bis(4-hydroxypyridine-2,6-dicarboxylato- κ3O2,N,O6)nickelate(II) dihydrate (Aghabozorg, Motyeian et al., 2008). In the dmpH+ cation there is a short N-H···N interaction as a result of the inherant planarity of the system (Table 1).
In the crystal the cations are linked via O–H···O hydrogen bonds to form dimers - graph-set [R22(16)] - centered about inversion centers (Bernstein et al., 1995; Table 1, Fig 2). These dimers are further link by other cation O-H···O hydrogen bonds - graph-set [R66(42)] - to form a two-dimensional network in (011). Additional intermolecular O–H···O, N–H···O, N–H···N, and weak C–H···O hydrogen bonds connect these two dimensional networks to form a three-dimensional arrangeemt (Fig. 3).
Another feature of the crystal structure of the title compound is the presence of π–π stacking interactions (Table 2). The shortest π–π distance is 3.5442 (14) Å involving pyridine ring (N2/C8-C12) of the (hypydc)2- anion and the central aromatic ring of the dmpH+ cation (C18-C21,C25-C26).
Footnote for Table 1: Cg1 is the centroid of ring N1,C1-C5.