metal-organic compounds
Di-μ-sulfato-κ4O:O′-bis[diaqua(1H-imidazo[4,5-f][1,10]phenanthroline)manganese(II)] dihydrate
aCollege of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, People's Republic of China, and bState Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China
*Correspondence e-mail: shenlin@fjnu.edu.cn
In the title centrosymmetric dinuclear compound, [Mn2(SO4)2(C13H8N4)2(H2O)4]·2H2O, the MnII atom is octahedrally coordinated by two N atoms from a 1H-imidazo[4,5-f][1,10]phenanthroline (ip) ligand, two O atoms belonging to two bridging sulfate anions and two water O atoms. In the the complex molecules and the uncoodinated water molecules are connected by O—H⋯O, O—H⋯N and N—H⋯O hydrogen bonds into a three-dimensional network. A π–π stacking interaction between the pyridyl ring of the ip ligand and the benzene ring of the neighboring ligand [centroid–centroid distance = 3.579 (2) Å] is also observed.
Related literature
For general background to the crystal engineering of functional materials, see: Aoyama (1998); Bassani et al. (2000); Kahn (2000); Matsuda et al. (2005); Miller (2000); Rowsell et al. (2004). For related structures, see: Gong et al. (2009); Wang et al. (2008); Wu et al. (1997); Yang et al. (2010); Yu (2009); Zeng et al. (2009).
Experimental
Crystal data
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Refinement
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Data collection: CrystalClear (Rigaku, 2002); cell CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg, 1999); software used to prepare material for publication: SHELXTL.
Supporting information
https://doi.org/10.1107/S1600536810031909/hy2338sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810031909/hy2338Isup2.hkl
The ip ligand was synthesized according to literature (Wu et al., 1997). A mixture of MnSO4, ip and H2O in a molar ratio of 1:1:556 was stirred for an hour, then sealed in an 18 ml Teflon-lined stainless steel reactor and heated for 3 d at 433 K and autogeneous pressure. After allowing the reaction mixture to cool down to room temperature, yellow crystals were collected, washed with water and dried at room temperature.
C- and N-bound H atoms were positioned geometrically and refined as riding atoms, with C—H = 0.93 and N—H = 0.86 Å and Uiso(H) = 1.2Ueq(C,N). The water H atoms were located in a difference Fourier map and refined isotropically, with restraints of O—H = 0.84 (1) and H···H = 1.44 (1) Å.
An important aspect of crystal engineering is to understand and attempt to control the manner in which molecules are arranged in crystal lattices through the use of noncovalent interactions such as electrostatic interactions, hydrogen bonding, dispersion and induction forces, and π-π stacking interactions. These materials have attracted much interest due to their strong potential for a variety of applications including gas storage (Matsuda et al., 2005; Rowsell et al., 2004), catalytic properties (Aoyama, 1998; Bassani et al., 2000) and magnetism (Kahn, 2000; Miller, 2000). One approach to forming networks of discrete transition metal complexes is to use a chelating ligand that has additional interactional functionality attached to its backbone, such as additional coordination sites or hydrogen bonding groups, or extended π systems. 1H-Imidazo[5,f][1,10]phenanthroline (ip) has been used to form metal complexes with novel supramolecular architectures due to their excellent coordinating ability, large conjugated systems and strong hydrogen bonding donor and acceptor groups (Gong et al., 2009; Wang et al., 2008; Wu et al., 1997; Yang et al., 2010; Yu, 2009; Zeng et al., 2009). In the present paper,we hydrothermally synthesized a new coordination complex constructed from MnSO4 and ip.
The title dimeric complex is generated by an inversion center (Fig. 1). The MnII atom is six-coordinated by two N atoms from one ip ligand, two O atoms from water molecules and two O atoms from two sulfate anions in a distorted octahedral geometry (Table 1). The equatorial plane is defined by N2, O6, O1 and O5 and the axial coordination sites are occupied by N1 and O3i atoms [symmetry code: (i) -x, 1-y, -z]. The sulfate anion acts as a bidentate bridging ligand connecting two MnII ions, thus generating a binuclear complex. The hydrogen bonds play a key role in the structural stability (Table 2). The uncoordinated water molecule is a hydrogen bond acceptor from the coordinated water, and a hydrogen bond donor to two O atoms of two sulfate anions in two neighboring complex molecules. So each free water is hydrogen bonded to three different complex molecules. The ip ligand is a hydrogen bond donor through the imidazolyl NH group to a sulfate O atom of an adjacent complex molecule and a hydrogen bond acceptor from the coordinated water molecule (O5) of another adjacent complex molecule through the other imidazolyl N atom, forming a three-dimensional network structure, as illustrated in Fig. 2. There is also a π–π stacking interaction between the pyridyl ring of the ip ligand and the benzene ring of the neighboring ip ligand, with a centroid–centroid distance of 3.579 (2) Å.
For general background to the crystal engineering of functional materials, see: Aoyama (1998); Bassani et al. (2000); Kahn (2000); Matsuda et al. (2005); Miller (2000); Rowsell et al. (2004). For related structures, see: Gong et al. (2009); Wang et al. (2008); Wu et al. (1997); Yang et al. (2010); Yu (2009); Zeng et al. (2009).
Data collection: CrystalClear (Rigaku, 2002); cell
CrystalClear (Rigaku, 2002); data reduction: CrystalClear (Rigaku, 2002); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg, 1999); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. Molecular structure of the title compound. H atoms have been omitted for clarity. [Symmetry code: (A) -x, 1-y, -z.] | |
Fig. 2. The three-dimensional hydrogen bonding network in the title compound. |
[Mn2(SO4)2(C13H8N4)2(H2O)4]·2H2O | F(000) = 868 |
Mr = 850.58 | Dx = 1.749 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 4851 reflections |
a = 10.467 (7) Å | θ = 3.3–27.4° |
b = 9.171 (6) Å | µ = 1.00 mm−1 |
c = 17.025 (11) Å | T = 293 K |
β = 98.758 (12)° | Prism, yellow |
V = 1615.2 (18) Å3 | 1.00 × 0.80 × 0.60 mm |
Z = 2 |
Rigaku Mercury CCD diffractometer | 3544 independent reflections |
Radiation source: fine-focus sealed tube | 3251 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.024 |
Detector resolution: 14.6306 pixels mm-1 | θmax = 27.4°, θmin = 2.5° |
ω scan | h = −13→13 |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2002) | k = −11→11 |
Tmin = 0.432, Tmax = 1.000 | l = −21→21 |
11099 measured reflections |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.030 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.082 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0437P)2 + 0.5623P] where P = (Fo2 + 2Fc2)/3 |
3544 reflections | (Δ/σ)max = 0.001 |
259 parameters | Δρmax = 0.30 e Å−3 |
9 restraints | Δρmin = −0.39 e Å−3 |
[Mn2(SO4)2(C13H8N4)2(H2O)4]·2H2O | V = 1615.2 (18) Å3 |
Mr = 850.58 | Z = 2 |
Monoclinic, P21/c | Mo Kα radiation |
a = 10.467 (7) Å | µ = 1.00 mm−1 |
b = 9.171 (6) Å | T = 293 K |
c = 17.025 (11) Å | 1.00 × 0.80 × 0.60 mm |
β = 98.758 (12)° |
Rigaku Mercury CCD diffractometer | 3544 independent reflections |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2002) | 3251 reflections with I > 2σ(I) |
Tmin = 0.432, Tmax = 1.000 | Rint = 0.024 |
11099 measured reflections |
R[F2 > 2σ(F2)] = 0.030 | 9 restraints |
wR(F2) = 0.082 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | Δρmax = 0.30 e Å−3 |
3544 reflections | Δρmin = −0.39 e Å−3 |
259 parameters |
x | y | z | Uiso*/Ueq | ||
Mn1 | 0.18299 (2) | 0.67998 (3) | 0.039544 (16) | 0.02452 (10) | |
S1 | 0.03061 (4) | 0.40185 (4) | 0.11921 (2) | 0.02399 (11) | |
O1 | 0.13383 (12) | 0.47205 (14) | 0.08303 (9) | 0.0374 (3) | |
O2 | −0.06301 (12) | 0.51435 (14) | 0.13804 (8) | 0.0316 (3) | |
O3 | −0.03679 (12) | 0.29274 (14) | 0.06387 (8) | 0.0311 (3) | |
O4 | 0.08663 (14) | 0.32790 (15) | 0.19348 (9) | 0.0400 (3) | |
O5 | 0.29524 (13) | 0.55706 (16) | −0.04252 (8) | 0.0339 (3) | |
H1 | 0.2295 (19) | 0.519 (3) | −0.0712 (14) | 0.074 (9)* | |
H2 | 0.329 (3) | 0.626 (3) | −0.0665 (16) | 0.096 (12)* | |
O6 | 0.05988 (16) | 0.77338 (17) | 0.11855 (10) | 0.0484 (4) | |
H3 | 0.065 (2) | 0.8546 (15) | 0.1421 (14) | 0.059 (8)* | |
H4 | 0.012 (2) | 0.7107 (19) | 0.1349 (14) | 0.056 (8)* | |
O7 | 0.0949 (3) | 0.01928 (19) | 0.20000 (11) | 0.0714 (6) | |
H5 | 0.090 (3) | 0.008 (3) | 0.2492 (7) | 0.076 (10)* | |
H6 | 0.088 (3) | 0.1066 (16) | 0.1844 (15) | 0.084 (10)* | |
N1 | 0.37913 (14) | 0.68351 (15) | 0.11788 (9) | 0.0257 (3) | |
N2 | 0.25995 (13) | 0.91094 (15) | 0.03511 (9) | 0.0252 (3) | |
N3 | 0.74601 (14) | 1.01809 (18) | 0.20156 (9) | 0.0321 (3) | |
H3B | 0.8055 | 0.9678 | 0.2297 | 0.039* | |
N4 | 0.64434 (15) | 1.21029 (17) | 0.13915 (10) | 0.0338 (4) | |
C1 | 0.43732 (18) | 0.56818 (19) | 0.15534 (11) | 0.0303 (4) | |
H1A | 0.3930 | 0.4800 | 0.1522 | 0.036* | |
C2 | 0.56195 (18) | 0.5734 (2) | 0.19914 (12) | 0.0333 (4) | |
H2B | 0.5993 | 0.4901 | 0.2240 | 0.040* | |
C3 | 0.62820 (17) | 0.7031 (2) | 0.20480 (12) | 0.0314 (4) | |
H3C | 0.7105 | 0.7093 | 0.2343 | 0.038* | |
C4 | 0.56986 (15) | 0.82664 (18) | 0.16534 (10) | 0.0239 (3) | |
C5 | 0.62700 (15) | 0.96855 (19) | 0.16508 (10) | 0.0257 (4) | |
C6 | 0.56533 (16) | 1.08776 (18) | 0.12661 (10) | 0.0253 (3) | |
C7 | 0.43740 (15) | 1.07578 (18) | 0.08161 (10) | 0.0236 (3) | |
C8 | 0.36759 (18) | 1.19078 (18) | 0.04063 (12) | 0.0302 (4) | |
H8A | 0.4032 | 1.2838 | 0.0414 | 0.036* | |
C9 | 0.24595 (18) | 1.1648 (2) | −0.00075 (12) | 0.0337 (4) | |
H9A | 0.1977 | 1.2403 | −0.0269 | 0.040* | |
C10 | 0.19618 (16) | 1.0231 (2) | −0.00289 (11) | 0.0306 (4) | |
H10A | 0.1150 | 1.0060 | −0.0321 | 0.037* | |
C11 | 0.37862 (15) | 0.93635 (17) | 0.07832 (10) | 0.0220 (3) | |
C12 | 0.44406 (15) | 0.81270 (17) | 0.12160 (10) | 0.0222 (3) | |
C13 | 0.75016 (19) | 1.1614 (2) | 0.18408 (12) | 0.0370 (4) | |
H13A | 0.8209 | 1.2205 | 0.2020 | 0.044* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Mn1 | 0.02168 (14) | 0.02247 (15) | 0.02823 (17) | −0.00592 (9) | −0.00001 (11) | −0.00163 (10) |
S1 | 0.0223 (2) | 0.0203 (2) | 0.0272 (2) | −0.00508 (14) | −0.00289 (16) | 0.00196 (15) |
O1 | 0.0317 (7) | 0.0248 (6) | 0.0578 (9) | −0.0043 (5) | 0.0138 (6) | 0.0050 (6) |
O2 | 0.0289 (6) | 0.0270 (6) | 0.0384 (7) | −0.0024 (5) | 0.0037 (5) | −0.0046 (5) |
O3 | 0.0290 (6) | 0.0253 (6) | 0.0354 (8) | −0.0023 (5) | −0.0067 (5) | −0.0044 (5) |
O4 | 0.0475 (8) | 0.0336 (7) | 0.0330 (8) | −0.0034 (6) | −0.0129 (6) | 0.0068 (6) |
O5 | 0.0305 (7) | 0.0349 (7) | 0.0361 (8) | −0.0022 (5) | 0.0040 (6) | −0.0011 (6) |
O6 | 0.0599 (9) | 0.0302 (8) | 0.0626 (10) | −0.0153 (7) | 0.0334 (8) | −0.0142 (7) |
O7 | 0.1428 (19) | 0.0306 (9) | 0.0456 (11) | −0.0169 (10) | 0.0295 (12) | −0.0072 (7) |
N1 | 0.0253 (7) | 0.0215 (7) | 0.0292 (8) | −0.0046 (5) | 0.0008 (6) | 0.0003 (5) |
N2 | 0.0209 (6) | 0.0247 (7) | 0.0287 (8) | −0.0030 (5) | 0.0000 (6) | 0.0014 (6) |
N3 | 0.0235 (7) | 0.0369 (9) | 0.0323 (9) | −0.0062 (6) | −0.0073 (6) | 0.0023 (7) |
N4 | 0.0326 (8) | 0.0295 (8) | 0.0376 (9) | −0.0113 (6) | −0.0004 (7) | 0.0004 (7) |
C1 | 0.0348 (9) | 0.0221 (8) | 0.0330 (10) | −0.0035 (7) | 0.0026 (8) | 0.0010 (7) |
C2 | 0.0363 (9) | 0.0266 (9) | 0.0352 (11) | 0.0049 (7) | 0.0002 (8) | 0.0060 (7) |
C3 | 0.0244 (8) | 0.0342 (10) | 0.0335 (10) | 0.0018 (7) | −0.0023 (7) | 0.0032 (8) |
C4 | 0.0217 (7) | 0.0251 (8) | 0.0240 (9) | −0.0023 (6) | 0.0006 (6) | −0.0010 (6) |
C5 | 0.0200 (7) | 0.0293 (9) | 0.0263 (9) | −0.0046 (6) | −0.0011 (6) | −0.0012 (7) |
C6 | 0.0253 (8) | 0.0234 (8) | 0.0266 (9) | −0.0068 (6) | 0.0022 (7) | −0.0018 (6) |
C7 | 0.0241 (8) | 0.0224 (8) | 0.0241 (8) | −0.0032 (6) | 0.0032 (7) | −0.0012 (6) |
C8 | 0.0327 (9) | 0.0207 (8) | 0.0364 (11) | −0.0025 (6) | 0.0029 (8) | 0.0005 (7) |
C9 | 0.0319 (9) | 0.0278 (9) | 0.0393 (11) | 0.0050 (7) | −0.0019 (8) | 0.0064 (8) |
C10 | 0.0218 (8) | 0.0316 (9) | 0.0362 (10) | 0.0006 (7) | −0.0023 (7) | 0.0042 (8) |
C11 | 0.0196 (7) | 0.0220 (8) | 0.0240 (9) | −0.0025 (6) | 0.0024 (6) | −0.0007 (6) |
C12 | 0.0214 (7) | 0.0216 (8) | 0.0232 (9) | −0.0030 (6) | 0.0019 (6) | −0.0008 (6) |
C13 | 0.0318 (9) | 0.0387 (11) | 0.0380 (11) | −0.0177 (8) | −0.0029 (8) | −0.0020 (8) |
Mn1—O1 | 2.1366 (17) | N3—H3B | 0.8600 |
Mn1—O3i | 2.1641 (16) | N4—C13 | 1.325 (3) |
Mn1—O5 | 2.2590 (16) | N4—C6 | 1.392 (2) |
Mn1—O6 | 2.1751 (17) | C1—C2 | 1.401 (3) |
Mn1—N1 | 2.2718 (19) | C1—H1A | 0.9300 |
Mn1—N2 | 2.2715 (19) | C2—C3 | 1.373 (3) |
S1—O1 | 1.4711 (14) | C2—H2B | 0.9300 |
S1—O4 | 1.4753 (16) | C3—C4 | 1.408 (2) |
S1—O3 | 1.4779 (14) | C3—H3C | 0.9300 |
S1—O2 | 1.4910 (14) | C4—C12 | 1.416 (2) |
O3—Mn1i | 2.1641 (16) | C4—C5 | 1.433 (2) |
O5—H1 | 0.85 (1) | C5—C6 | 1.383 (2) |
O5—H2 | 0.86 (3) | C6—C7 | 1.442 (2) |
O6—H3 | 0.84 (1) | C7—C8 | 1.406 (2) |
O6—H4 | 0.84 (2) | C7—C11 | 1.416 (2) |
O7—H5 | 0.85 (1) | C8—C9 | 1.379 (3) |
O7—H6 | 0.84 (1) | C8—H8A | 0.9300 |
N1—C1 | 1.333 (2) | C9—C10 | 1.398 (3) |
N1—C12 | 1.363 (2) | C9—H9A | 0.9300 |
N2—C10 | 1.338 (2) | C10—H10A | 0.9300 |
N2—C11 | 1.364 (2) | C11—C12 | 1.464 (2) |
N3—C13 | 1.350 (3) | C13—H13A | 0.9300 |
N3—C5 | 1.381 (2) | ||
O1—Mn1—O3i | 101.97 (6) | N1—C1—C2 | 123.22 (16) |
O1—Mn1—O6 | 86.60 (7) | N1—C1—H1A | 118.4 |
O3i—Mn1—O6 | 92.60 (8) | C2—C1—H1A | 118.4 |
O1—Mn1—O5 | 86.81 (6) | C3—C2—C1 | 119.08 (17) |
O3i—Mn1—O5 | 85.67 (7) | C3—C2—H2B | 120.5 |
O6—Mn1—O5 | 172.68 (5) | C1—C2—H2B | 120.5 |
O1—Mn1—N2 | 161.64 (6) | C2—C3—C4 | 119.07 (17) |
O3i—Mn1—N2 | 94.33 (5) | C2—C3—H3C | 120.5 |
O6—Mn1—N2 | 84.25 (6) | C4—C3—H3C | 120.5 |
O5—Mn1—N2 | 102.96 (6) | C3—C4—C12 | 118.63 (15) |
O1—Mn1—N1 | 93.04 (6) | C3—C4—C5 | 125.55 (16) |
O3i—Mn1—N1 | 160.02 (5) | C12—C4—C5 | 115.82 (15) |
O6—Mn1—N1 | 101.47 (8) | N3—C5—C6 | 106.07 (15) |
O5—Mn1—N1 | 82.04 (7) | N3—C5—C4 | 130.22 (16) |
N2—Mn1—N1 | 73.31 (5) | C6—C5—C4 | 123.70 (15) |
O1—S1—O4 | 109.79 (9) | C5—C6—N4 | 110.00 (16) |
O1—S1—O3 | 109.82 (9) | C5—C6—C7 | 121.34 (15) |
O4—S1—O3 | 108.90 (9) | N4—C6—C7 | 128.66 (16) |
O1—S1—O2 | 109.62 (9) | C8—C7—C11 | 117.88 (16) |
O4—S1—O2 | 108.80 (9) | C8—C7—C6 | 125.22 (15) |
O3—S1—O2 | 109.88 (8) | C11—C7—C6 | 116.90 (15) |
S1—O1—Mn1 | 140.06 (8) | C9—C8—C7 | 119.55 (16) |
S1—O3—Mn1i | 130.55 (8) | C9—C8—H8A | 120.2 |
Mn1—O5—H1 | 96 (2) | C7—C8—H8A | 120.2 |
Mn1—O5—H2 | 102 (2) | C8—C9—C10 | 119.05 (16) |
H1—O5—H2 | 112.2 (16) | C8—C9—H9A | 120.5 |
Mn1—O6—H3 | 129.9 (16) | C10—C9—H9A | 120.5 |
Mn1—O6—H4 | 112.2 (16) | N2—C10—C9 | 123.04 (17) |
H3—O6—H4 | 116.3 (16) | N2—C10—H10A | 118.5 |
H5—O7—H6 | 114.1 (16) | C9—C10—H10A | 118.5 |
C1—N1—C12 | 118.64 (15) | N2—C11—C7 | 122.01 (15) |
C1—N1—Mn1 | 125.14 (11) | N2—C11—C12 | 117.19 (14) |
C12—N1—Mn1 | 116.06 (11) | C7—C11—C12 | 120.81 (15) |
C10—N2—C11 | 118.41 (15) | N1—C12—C4 | 121.34 (15) |
C10—N2—Mn1 | 125.42 (12) | N1—C12—C11 | 117.28 (15) |
C11—N2—Mn1 | 116.10 (11) | C4—C12—C11 | 121.39 (14) |
C13—N3—C5 | 106.16 (15) | N4—C13—N3 | 113.86 (16) |
C13—N3—H3B | 126.9 | N4—C13—H13A | 123.1 |
C5—N3—H3B | 126.9 | N3—C13—H13A | 123.1 |
C13—N4—C6 | 103.91 (16) |
Symmetry code: (i) −x, −y+1, −z. |
D—H···A | D—H | H···A | D···A | D—H···A |
O5—H1···O2i | 0.85 (1) | 1.95 (1) | 2.789 (2) | 165 (3) |
O5—H2···N4ii | 0.86 (3) | 1.99 (3) | 2.824 (2) | 164 (3) |
O6—H3···O7iii | 0.84 (1) | 1.80 (1) | 2.644 (3) | 172 (3) |
O6—H4···O2 | 0.84 (2) | 1.97 (1) | 2.745 (2) | 154 (2) |
O7—H5···O2iv | 0.85 (1) | 1.98 (1) | 2.828 (3) | 171 (3) |
O7—H6···O4 | 0.84 (1) | 2.04 (2) | 2.833 (3) | 157 (3) |
N3—H3B···O4v | 0.86 | 2.04 | 2.890 (2) | 167 |
Symmetry codes: (i) −x, −y+1, −z; (ii) −x+1, −y+2, −z; (iii) x, y+1, z; (iv) −x, y−1/2, −z+1/2; (v) −x+1, y+1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | [Mn2(SO4)2(C13H8N4)2(H2O)4]·2H2O |
Mr | 850.58 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 293 |
a, b, c (Å) | 10.467 (7), 9.171 (6), 17.025 (11) |
β (°) | 98.758 (12) |
V (Å3) | 1615.2 (18) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 1.00 |
Crystal size (mm) | 1.00 × 0.80 × 0.60 |
Data collection | |
Diffractometer | Rigaku Mercury CCD |
Absorption correction | Multi-scan (CrystalClear; Rigaku, 2002) |
Tmin, Tmax | 0.432, 1.000 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 11099, 3544, 3251 |
Rint | 0.024 |
(sin θ/λ)max (Å−1) | 0.647 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.030, 0.082, 1.05 |
No. of reflections | 3544 |
No. of parameters | 259 |
No. of restraints | 9 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.30, −0.39 |
Computer programs: CrystalClear (Rigaku, 2002), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg, 1999), SHELXTL (Sheldrick, 2008).
Mn1—O1 | 2.1366 (17) | Mn1—O6 | 2.1751 (17) |
Mn1—O3i | 2.1641 (16) | Mn1—N1 | 2.2718 (19) |
Mn1—O5 | 2.2590 (16) | Mn1—N2 | 2.2715 (19) |
Symmetry code: (i) −x, −y+1, −z. |
D—H···A | D—H | H···A | D···A | D—H···A |
O5—H1···O2i | 0.85 (1) | 1.95 (1) | 2.789 (2) | 165 (3) |
O5—H2···N4ii | 0.86 (3) | 1.99 (3) | 2.824 (2) | 164 (3) |
O6—H3···O7iii | 0.84 (1) | 1.80 (1) | 2.644 (3) | 172 (3) |
O6—H4···O2 | 0.84 (2) | 1.97 (1) | 2.745 (2) | 154 (2) |
O7—H5···O2iv | 0.85 (1) | 1.98 (1) | 2.828 (3) | 171 (3) |
O7—H6···O4 | 0.84 (1) | 2.04 (2) | 2.833 (3) | 157 (3) |
N3—H3B···O4v | 0.86 | 2.04 | 2.890 (2) | 167 |
Symmetry codes: (i) −x, −y+1, −z; (ii) −x+1, −y+2, −z; (iii) x, y+1, z; (iv) −x, y−1/2, −z+1/2; (v) −x+1, y+1/2, −z+1/2. |
Acknowledgements
This work was supported by the National Natural Science Foundation of China (grant No. 20771024), the Natural Science Foundation of Fujian Province (grant No. 2008 J0142) and the Key Project Fund of Science and Technology of Fujian Province (grant No. 2008I0013).
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
An important aspect of crystal engineering is to understand and attempt to control the manner in which molecules are arranged in crystal lattices through the use of noncovalent interactions such as electrostatic interactions, hydrogen bonding, dispersion and induction forces, and π-π stacking interactions. These materials have attracted much interest due to their strong potential for a variety of applications including gas storage (Matsuda et al., 2005; Rowsell et al., 2004), catalytic properties (Aoyama, 1998; Bassani et al., 2000) and magnetism (Kahn, 2000; Miller, 2000). One approach to forming networks of discrete transition metal complexes is to use a chelating ligand that has additional interactional functionality attached to its backbone, such as additional coordination sites or hydrogen bonding groups, or extended π systems. 1H-Imidazo[5,f][1,10]phenanthroline (ip) has been used to form metal complexes with novel supramolecular architectures due to their excellent coordinating ability, large conjugated systems and strong hydrogen bonding donor and acceptor groups (Gong et al., 2009; Wang et al., 2008; Wu et al., 1997; Yang et al., 2010; Yu, 2009; Zeng et al., 2009). In the present paper,we hydrothermally synthesized a new coordination complex constructed from MnSO4 and ip.
The title dimeric complex is generated by an inversion center (Fig. 1). The MnII atom is six-coordinated by two N atoms from one ip ligand, two O atoms from water molecules and two O atoms from two sulfate anions in a distorted octahedral geometry (Table 1). The equatorial plane is defined by N2, O6, O1 and O5 and the axial coordination sites are occupied by N1 and O3i atoms [symmetry code: (i) -x, 1-y, -z]. The sulfate anion acts as a bidentate bridging ligand connecting two MnII ions, thus generating a binuclear complex. The hydrogen bonds play a key role in the structural stability (Table 2). The uncoordinated water molecule is a hydrogen bond acceptor from the coordinated water, and a hydrogen bond donor to two O atoms of two sulfate anions in two neighboring complex molecules. So each free water is hydrogen bonded to three different complex molecules. The ip ligand is a hydrogen bond donor through the imidazolyl NH group to a sulfate O atom of an adjacent complex molecule and a hydrogen bond acceptor from the coordinated water molecule (O5) of another adjacent complex molecule through the other imidazolyl N atom, forming a three-dimensional network structure, as illustrated in Fig. 2. There is also a π–π stacking interaction between the pyridyl ring of the ip ligand and the benzene ring of the neighboring ip ligand, with a centroid–centroid distance of 3.579 (2) Å.