metal-organic compounds
(Acetylacetonato)(dicyanamido)(1,10-phenanthroline)copper(II) dihydrate
aDepartment of Chemistry, University of Sistan and Baluchestan, PO Box 98135-674, Zahedan, Iran, bFaculty of Science, Gonbad Higher Education Center, PO Box 163, Gonbad, Iran, and cChemistry, School of Biomedical, Biomolecular & Chemical Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Perth, Western Australia 6009, Australia
*Correspondence e-mail: brian.skelton@uwa.edu.au
In the title compound, [Cu(C5H7O2)(C2N3)(C12H8N2)]·2H2O, the CuII atom is five-coordinated in a square-pyramidal geometry with two acetylacetonate O and two phenanthroline N atoms forming the base. The apical position is occupied by the central N atom of the dicyanamide ligand. The dicyanamide N atoms are each involved in hydrogen bonds to water molecules. There are also hydrogen bonds between both the water molecules and their centrosymmetric pairs, creating a hydrogen-bonded chain along the b-axis direction.
Related literature
Dicyanamide (dca) has been shown to be a versatile ligand and may coordinate to metal ions as a terminal ligand through a nitrile or amide nitrogen. It also acts as a bridging ligand. Until now, as many as eight structurally characterized coordination modes of dicyanamide had been reported in the literature, see: Chattopadhyay et al. (2008); Liu et al. (2005); Miller & Manson (2001); Xu et al. (2003).
Experimental
Crystal data
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Refinement
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Data collection: CrysAlis CCD (Oxford Diffraction 2009); cell CrysAlis RED (Oxford Diffraction, 2009); data reduction: CrysAlis RED; program(s) used to solve structure: SIR92 (Altomare et al., 1994); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEPII (Johnson, 1976); software used to prepare material for publication: publCIF (Westrip, 2010).
Supporting information
https://doi.org/10.1107/S1600536810030163/om2347sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810030163/om2347Isup2.hkl
Acetylacetone (0.103 ml, 1 mmol) was added to a 20 ml methanolic solution of CuCl2.2H2O (170 mg, 1 mmol). After 30 min of stirring, a solution of phen (198 mg, 1 mmol) in 10 ml methanol was added dropwise to this solution. A solution of 1 mmol of sodium dicyanamide (89 mg) dissolved in 5 ml water was then added slowly with stirring. After 10 h of stirring at room temperature, the resulting solution was filtered to remove any undissolved materials. A dark blue crystalline product separated after 2 weeks.
All H atoms were positioned geometrically and refined using a riding model with C—H = 0.95–0.98 Å and with Uiso(H) = 1.2 times Ueq(C) for CH and Uiso(H) = 1.5 times Ueq(C) for those on terminal C atoms. Anisotropic displacement parameters were employed throughout for the non-hydrogen atoms. Hydrogen atoms on water molecules were located in the difference Fourier map and refined with O-H bond lengths restrained to ideal values.
Metal dicyanamide (dca) compounds are of great interest due to the variety of observed topologies, this being related to the versatility of dca as a ligand, and its potential application in functional materials. In the present work, we describe the synthesis and
of a new CuII complex using the diimine ligand (phen), a bidentate ligand with two oxygen donor atoms (acac) and the anionic co-ligand dicyanamide (dca) (Fig. 1). To date, a number of higher - dimensional coordination networks of different transition metals have been reported with dca as a bridging ligand, but there are few compounds with dca acting as a monodentate ligand through the amide nitrogen. To the best of our knowledge, this complex is one of the few cases where dca is acting as a terminal ligand through the amide nitrogen. The molecule of the title compound is shown in Fig. 1 with selected bond lengths and angles listed in Table 1. In this molecule the coordination is square pyramidal with the two acac O and two phen N atoms forming the base. The apical position is occupied by the N of the dicyanamido ligand with the Cu—N3 distance (Cu1—N3 2.3920 (15) Å) being much greater than those in the basal plane Cu1—O1, 1.906 (1), 1.907 (1) Å and Cu1—N1, 2.010 (1), 2.014 (1) Å. The dicyanamide N atoms, N4, N5 are each involved in hydrogen bonds to water molecules. There are also hydrogen bonds between both the water molecules and their centrosymmetric pairs creating a one dimensional hydrogen bonded polymer in the b direction (see Fig. 2). Geometrical details are listed in Table 2.Dicyanamide (dca) has been shown to be a versatile ligand and may coordinate to metal ions as a terminal ligand through a nitrile or amide nitrogen. It also acts as a bridging ligand. Until now, as many as eight structurally characterized coordination modes of dicyanamide had been reported in the literature, see: Chattopadhyay et al. (2008); Liu et al. (2005); Miller & Manson (2001); Xu et al. (2003).
Data collection: CrysAlis CCD (Oxford Diffraction 2009); cell
CrysAlis RED (Oxford Diffraction, 2009); data reduction: CrysAlis RED (Oxford Diffraction, 2009); program(s) used to solve structure: SIR92 (Altomare et al., 1994); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEPII (Johnson, 1976); software used to prepare material for publication: publCIF (Westrip, 2010).[Cu(C5H7O2)(C2N3)(C12H8N2)]·2H2O | Z = 2 |
Mr = 444.93 | F(000) = 458 |
Triclinic, P1 | Dx = 1.549 Mg m−3 |
Hall symbol: -p 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 8.2825 (8) Å | Cell parameters from 5220 reflections |
b = 9.9853 (7) Å | θ = 3.5–32.5° |
c = 12.1109 (7) Å | µ = 1.18 mm−1 |
α = 76.388 (5)° | T = 100 K |
β = 79.236 (7)° | Slab, blue |
γ = 83.554 (7)° | 0.44 × 0.38 × 0.15 mm |
V = 953.90 (13) Å3 |
Oxford Diffraction Gemini diffractometer | 6254 independent reflections |
Graphite monochromator | 4672 reflections with I > 2σ(I) |
Detector resolution: 10.4738 pixels mm-1 | Rint = 0.028 |
ω scans | θmax = 32.6°, θmin = 3.5° |
Absorption correction: analytical (CrysAlis RED; Oxford Diffraction, 2009) | h = −12→10 |
Tmin = 0.667, Tmax = 0.847 | k = −15→14 |
10664 measured reflections | l = −17→17 |
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)] = 0.034 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.082 | H atoms treated by a mixture of independent and constrained refinement |
S = 0.97 | w = 1/[σ2(Fo2) + (0.0386P)2] where P = (Fo2 + 2Fc2)/3 |
6254 reflections | (Δ/σ)max = 0.002 |
280 parameters | Δρmax = 0.52 e Å−3 |
6 restraints | Δρmin = −0.42 e Å−3 |
[Cu(C5H7O2)(C2N3)(C12H8N2)]·2H2O | γ = 83.554 (7)° |
Mr = 444.93 | V = 953.90 (13) Å3 |
Triclinic, P1 | Z = 2 |
a = 8.2825 (8) Å | Mo Kα radiation |
b = 9.9853 (7) Å | µ = 1.18 mm−1 |
c = 12.1109 (7) Å | T = 100 K |
α = 76.388 (5)° | 0.44 × 0.38 × 0.15 mm |
β = 79.236 (7)° |
Oxford Diffraction Gemini diffractometer | 6254 independent reflections |
Absorption correction: analytical (CrysAlis RED; Oxford Diffraction, 2009) | 4672 reflections with I > 2σ(I) |
Tmin = 0.667, Tmax = 0.847 | Rint = 0.028 |
10664 measured reflections |
R[F2 > 2σ(F2)] = 0.034 | 6 restraints |
wR(F2) = 0.082 | H atoms treated by a mixture of independent and constrained refinement |
S = 0.97 | Δρmax = 0.52 e Å−3 |
6254 reflections | Δρmin = −0.42 e Å−3 |
280 parameters |
Geometry. All s.u.'s (except the s.u. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell s.u.'s are taken into account individually in the estimation of s.u.'s in distances, angles and torsion angles; correlations between s.u.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell s.u.'s is used for estimating s.u.'s involving l.s. planes. |
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on all data will be even larger. The water molecule hydrogen geometries were restrained to ideal values. |
x | y | z | Uiso*/Ueq | ||
Cu1 | 0.44471 (3) | 0.77615 (2) | 0.641559 (16) | 0.01300 (6) | |
O1 | 0.30198 (14) | 0.93968 (11) | 0.64219 (9) | 0.0147 (2) | |
O2 | 0.46649 (15) | 0.78689 (11) | 0.48019 (9) | 0.0151 (2) | |
N1 | 0.61346 (17) | 0.61447 (13) | 0.65445 (11) | 0.0131 (3) | |
N2 | 0.47043 (17) | 0.76076 (13) | 0.80625 (11) | 0.0136 (3) | |
N3 | 0.20994 (18) | 0.64152 (14) | 0.69007 (12) | 0.0195 (3) | |
N4 | 0.24313 (19) | 0.38636 (15) | 0.73851 (12) | 0.0207 (3) | |
N5 | −0.04970 (19) | 0.77968 (15) | 0.73930 (13) | 0.0232 (3) | |
C1 | 0.6620 (2) | 0.57862 (16) | 0.75956 (13) | 0.0128 (3) | |
C2 | 0.7799 (2) | 0.47088 (16) | 0.78859 (13) | 0.0146 (3) | |
C3 | 0.8485 (2) | 0.39566 (17) | 0.70360 (14) | 0.0166 (3) | |
H3 | 0.928 | 0.3205 | 0.7195 | 0.02* | |
C4 | 0.7992 (2) | 0.43239 (17) | 0.59769 (14) | 0.0182 (3) | |
H4 | 0.845 | 0.383 | 0.5397 | 0.022* | |
C5 | 0.6813 (2) | 0.54268 (16) | 0.57561 (14) | 0.0158 (3) | |
H5 | 0.6486 | 0.5672 | 0.5019 | 0.019* | |
C6 | 0.8253 (2) | 0.44452 (17) | 0.90081 (14) | 0.0171 (3) | |
H6 | 0.905 | 0.3712 | 0.9219 | 0.021* | |
C7 | 0.5862 (2) | 0.65973 (16) | 0.84136 (13) | 0.0128 (3) | |
C8 | 0.6326 (2) | 0.63354 (16) | 0.94977 (13) | 0.0151 (3) | |
C9 | 0.5529 (2) | 0.71780 (17) | 1.02540 (14) | 0.0174 (3) | |
H9 | 0.5812 | 0.705 | 1.0999 | 0.021* | |
C10 | 0.4343 (2) | 0.81839 (17) | 0.99064 (14) | 0.0180 (3) | |
H10 | 0.3791 | 0.875 | 1.0412 | 0.022* | |
C11 | 0.3953 (2) | 0.83697 (16) | 0.87987 (13) | 0.0157 (3) | |
H11 | 0.3125 | 0.9063 | 0.8567 | 0.019* | |
C12 | 0.7560 (2) | 0.52296 (17) | 0.97732 (14) | 0.0180 (3) | |
H12 | 0.7895 | 0.5045 | 1.0506 | 0.022* | |
C13 | 0.1266 (2) | 1.13270 (17) | 0.57670 (14) | 0.0190 (3) | |
H13A | 0.0297 | 1.0988 | 0.632 | 0.028* | |
H13B | 0.0922 | 1.1839 | 0.5043 | 0.028* | |
H13C | 0.1812 | 1.1938 | 0.6083 | 0.028* | |
C14 | 0.2445 (2) | 1.01218 (16) | 0.55433 (13) | 0.0140 (3) | |
C15 | 0.2838 (2) | 0.98785 (16) | 0.44328 (13) | 0.0152 (3) | |
H15 | 0.2332 | 1.0492 | 0.3847 | 0.018* | |
C16 | 0.3917 (2) | 0.88016 (16) | 0.41157 (13) | 0.0134 (3) | |
C17 | 0.4305 (2) | 0.86863 (17) | 0.28774 (13) | 0.0171 (3) | |
H17A | 0.5449 | 0.89 | 0.2564 | 0.026* | |
H17B | 0.3564 | 0.934 | 0.2433 | 0.026* | |
H17C | 0.4154 | 0.7744 | 0.2828 | 0.026* | |
C18 | 0.2200 (2) | 0.50592 (17) | 0.71782 (13) | 0.0152 (3) | |
C19 | 0.0677 (2) | 0.70993 (16) | 0.71876 (14) | 0.0163 (3) | |
O1W | 0.1223 (2) | 0.12775 (15) | 0.88013 (13) | 0.0353 (4) | |
O2W | −0.13527 (19) | 0.96983 (16) | 0.89006 (12) | 0.0292 (3) | |
H1A | 0.165 (3) | 0.195 (2) | 0.8385 (17) | 0.054 (8)* | |
H1B | 0.137 (3) | 0.117 (2) | 0.9432 (13) | 0.034 (7)* | |
H2A | −0.059 (3) | 1.016 (2) | 0.877 (2) | 0.044 (8)* | |
H2B | −0.116 (3) | 0.9122 (19) | 0.8518 (18) | 0.041 (7)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cu1 | 0.01465 (11) | 0.01279 (10) | 0.01157 (10) | 0.00093 (7) | −0.00271 (7) | −0.00316 (7) |
O1 | 0.0164 (6) | 0.0138 (5) | 0.0137 (5) | −0.0002 (5) | −0.0029 (4) | −0.0026 (4) |
O2 | 0.0184 (6) | 0.0135 (5) | 0.0135 (5) | 0.0005 (5) | −0.0035 (4) | −0.0033 (4) |
N1 | 0.0146 (7) | 0.0136 (6) | 0.0112 (6) | −0.0029 (5) | −0.0013 (5) | −0.0026 (5) |
N2 | 0.0155 (7) | 0.0118 (6) | 0.0129 (6) | −0.0011 (5) | −0.0010 (5) | −0.0026 (5) |
N3 | 0.0163 (7) | 0.0138 (7) | 0.0267 (8) | −0.0019 (6) | 0.0011 (6) | −0.0042 (6) |
N4 | 0.0201 (8) | 0.0182 (7) | 0.0235 (7) | 0.0007 (6) | −0.0052 (6) | −0.0037 (6) |
N5 | 0.0179 (8) | 0.0182 (7) | 0.0317 (8) | −0.0021 (6) | −0.0017 (6) | −0.0033 (6) |
C1 | 0.0118 (7) | 0.0128 (7) | 0.0141 (7) | −0.0028 (6) | −0.0015 (6) | −0.0031 (6) |
C2 | 0.0130 (8) | 0.0139 (7) | 0.0167 (7) | −0.0023 (6) | −0.0028 (6) | −0.0021 (6) |
C3 | 0.0142 (8) | 0.0145 (8) | 0.0216 (8) | 0.0001 (6) | −0.0033 (6) | −0.0049 (6) |
C4 | 0.0189 (9) | 0.0173 (8) | 0.0196 (8) | −0.0002 (7) | −0.0013 (6) | −0.0085 (6) |
C5 | 0.0174 (8) | 0.0167 (8) | 0.0147 (7) | −0.0014 (6) | −0.0028 (6) | −0.0061 (6) |
C6 | 0.0150 (8) | 0.0179 (8) | 0.0181 (8) | −0.0004 (6) | −0.0053 (6) | −0.0016 (6) |
C7 | 0.0133 (8) | 0.0130 (7) | 0.0120 (7) | −0.0018 (6) | −0.0020 (6) | −0.0022 (6) |
C8 | 0.0155 (8) | 0.0165 (8) | 0.0141 (7) | −0.0037 (6) | −0.0025 (6) | −0.0035 (6) |
C9 | 0.0196 (9) | 0.0214 (8) | 0.0128 (7) | −0.0048 (7) | −0.0020 (6) | −0.0056 (6) |
C10 | 0.0216 (9) | 0.0189 (8) | 0.0145 (7) | −0.0020 (7) | −0.0006 (6) | −0.0072 (6) |
C11 | 0.0177 (8) | 0.0137 (7) | 0.0154 (7) | −0.0016 (6) | −0.0011 (6) | −0.0040 (6) |
C12 | 0.0176 (9) | 0.0212 (8) | 0.0158 (8) | −0.0014 (7) | −0.0061 (6) | −0.0025 (6) |
C13 | 0.0186 (9) | 0.0177 (8) | 0.0201 (8) | 0.0034 (7) | −0.0031 (6) | −0.0054 (6) |
C14 | 0.0119 (8) | 0.0126 (7) | 0.0175 (8) | −0.0029 (6) | −0.0017 (6) | −0.0026 (6) |
C15 | 0.0159 (8) | 0.0153 (7) | 0.0143 (7) | 0.0001 (6) | −0.0053 (6) | −0.0014 (6) |
C16 | 0.0121 (8) | 0.0151 (7) | 0.0139 (7) | −0.0048 (6) | −0.0030 (6) | −0.0024 (6) |
C17 | 0.0211 (9) | 0.0178 (8) | 0.0133 (7) | −0.0005 (7) | −0.0041 (6) | −0.0044 (6) |
C18 | 0.0127 (8) | 0.0223 (8) | 0.0118 (7) | −0.0021 (6) | −0.0020 (6) | −0.0057 (6) |
C19 | 0.0181 (8) | 0.0142 (7) | 0.0168 (8) | −0.0072 (6) | −0.0035 (6) | −0.0008 (6) |
O1W | 0.0484 (10) | 0.0288 (8) | 0.0272 (8) | −0.0153 (7) | −0.0032 (7) | 0.0003 (7) |
O2W | 0.0272 (8) | 0.0325 (8) | 0.0322 (8) | 0.0022 (7) | −0.0080 (6) | −0.0150 (6) |
Cu1—O1 | 1.9061 (11) | C6—H6 | 0.95 |
Cu1—O2 | 1.9072 (11) | C7—C8 | 1.394 (2) |
Cu1—N1 | 2.0100 (14) | C8—C9 | 1.412 (2) |
Cu1—N2 | 2.0136 (13) | C8—C12 | 1.440 (2) |
Cu1—N3 | 2.3920 (15) | C9—C10 | 1.373 (2) |
O1—C14 | 1.2775 (19) | C9—H9 | 0.95 |
O2—C16 | 1.2805 (19) | C10—C11 | 1.404 (2) |
N1—C5 | 1.332 (2) | C10—H10 | 0.95 |
N1—C1 | 1.362 (2) | C11—H11 | 0.95 |
N2—C11 | 1.329 (2) | C12—H12 | 0.95 |
N2—C7 | 1.361 (2) | C13—C14 | 1.505 (2) |
N3—C18 | 1.313 (2) | C13—H13A | 0.98 |
N3—C19 | 1.324 (2) | C13—H13B | 0.98 |
N4—C18 | 1.162 (2) | C13—H13C | 0.98 |
N5—C19 | 1.154 (2) | C14—C15 | 1.395 (2) |
C1—C2 | 1.396 (2) | C15—C16 | 1.398 (2) |
C1—C7 | 1.436 (2) | C15—H15 | 0.95 |
C2—C3 | 1.413 (2) | C16—C17 | 1.503 (2) |
C2—C6 | 1.435 (2) | C17—H17A | 0.98 |
C3—C4 | 1.374 (2) | C17—H17B | 0.98 |
C3—H3 | 0.95 | C17—H17C | 0.98 |
C4—C5 | 1.398 (2) | O1W—H1A | 0.812 (15) |
C4—H4 | 0.95 | O1W—H1B | 0.778 (15) |
C5—H5 | 0.95 | O2W—H2A | 0.795 (15) |
C6—C12 | 1.358 (2) | O2W—H2B | 0.806 (15) |
O1—Cu1—O2 | 95.58 (5) | C8—C7—C1 | 120.19 (14) |
O1—Cu1—N1 | 171.80 (5) | C7—C8—C9 | 116.93 (15) |
O2—Cu1—N1 | 90.01 (5) | C7—C8—C12 | 118.38 (15) |
O1—Cu1—N2 | 91.52 (5) | C9—C8—C12 | 124.68 (15) |
O2—Cu1—N2 | 168.73 (5) | C10—C9—C8 | 119.60 (15) |
N1—Cu1—N2 | 82.08 (5) | C10—C9—H9 | 120.2 |
O1—Cu1—N3 | 89.74 (5) | C8—C9—H9 | 120.2 |
O2—Cu1—N3 | 94.16 (5) | C9—C10—C11 | 119.45 (15) |
N1—Cu1—N3 | 95.85 (5) | C9—C10—H10 | 120.3 |
N2—Cu1—N3 | 94.62 (5) | C11—C10—H10 | 120.3 |
C14—O1—Cu1 | 124.52 (11) | N2—C11—C10 | 122.19 (15) |
C16—O2—Cu1 | 124.19 (11) | N2—C11—H11 | 118.9 |
C5—N1—C1 | 118.31 (14) | C10—C11—H11 | 118.9 |
C5—N1—Cu1 | 128.97 (11) | C6—C12—C8 | 121.43 (15) |
C1—N1—Cu1 | 112.72 (10) | C6—C12—H12 | 119.3 |
C11—N2—C7 | 118.32 (13) | C8—C12—H12 | 119.3 |
C11—N2—Cu1 | 129.06 (11) | C14—C13—H13A | 109.5 |
C7—N2—Cu1 | 112.58 (10) | C14—C13—H13B | 109.5 |
C18—N3—C19 | 119.10 (15) | H13A—C13—H13B | 109.5 |
C18—N3—Cu1 | 123.48 (12) | C14—C13—H13C | 109.5 |
C19—N3—Cu1 | 114.92 (11) | H13A—C13—H13C | 109.5 |
N1—C1—C2 | 123.32 (15) | H13B—C13—H13C | 109.5 |
N1—C1—C7 | 116.23 (14) | O1—C14—C15 | 125.18 (15) |
C2—C1—C7 | 120.45 (14) | O1—C14—C13 | 115.20 (14) |
C1—C2—C3 | 117.10 (15) | C15—C14—C13 | 119.63 (14) |
C1—C2—C6 | 118.67 (15) | C14—C15—C16 | 125.02 (14) |
C3—C2—C6 | 124.22 (15) | C14—C15—H15 | 117.5 |
C4—C3—C2 | 119.32 (15) | C16—C15—H15 | 117.5 |
C4—C3—H3 | 120.3 | O2—C16—C15 | 125.37 (14) |
C2—C3—H3 | 120.3 | O2—C16—C17 | 114.54 (14) |
C3—C4—C5 | 119.77 (15) | C15—C16—C17 | 120.08 (14) |
C3—C4—H4 | 120.1 | C16—C17—H17A | 109.5 |
C5—C4—H4 | 120.1 | C16—C17—H17B | 109.5 |
N1—C5—C4 | 122.17 (15) | H17A—C17—H17B | 109.5 |
N1—C5—H5 | 118.9 | C16—C17—H17C | 109.5 |
C4—C5—H5 | 118.9 | H17A—C17—H17C | 109.5 |
C12—C6—C2 | 120.86 (15) | H17B—C17—H17C | 109.5 |
C12—C6—H6 | 119.6 | N4—C18—N3 | 174.12 (19) |
C2—C6—H6 | 119.6 | N5—C19—N3 | 174.19 (18) |
N2—C7—C8 | 123.49 (14) | H1A—O1W—H1B | 112 (2) |
N2—C7—C1 | 116.31 (13) | H2A—O2W—H2B | 109.1 (19) |
D—H···A | D—H | H···A | D···A | D—H···A |
O2W—H2B···N5 | 0.81 (2) | 2.08 (2) | 2.879 (2) | 173 (2) |
O2W—H2A···O1Wi | 0.80 (2) | 1.98 (2) | 2.761 (2) | 167 (2) |
O1W—H1A···N4 | 0.81 (2) | 2.10 (2) | 2.910 (2) | 172 (3) |
O1W—H1B···O2Wii | 0.78 (2) | 2.00 (2) | 2.742 (2) | 160 (2) |
Symmetry codes: (i) x, y+1, z; (ii) −x, −y+1, −z+2. |
Experimental details
Crystal data | |
Chemical formula | [Cu(C5H7O2)(C2N3)(C12H8N2)]·2H2O |
Mr | 444.93 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 100 |
a, b, c (Å) | 8.2825 (8), 9.9853 (7), 12.1109 (7) |
α, β, γ (°) | 76.388 (5), 79.236 (7), 83.554 (7) |
V (Å3) | 953.90 (13) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 1.18 |
Crystal size (mm) | 0.44 × 0.38 × 0.15 |
Data collection | |
Diffractometer | Oxford Diffraction Gemini diffractometer |
Absorption correction | Analytical (CrysAlis RED; Oxford Diffraction, 2009) |
Tmin, Tmax | 0.667, 0.847 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 10664, 6254, 4672 |
Rint | 0.028 |
(sin θ/λ)max (Å−1) | 0.759 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.034, 0.082, 0.97 |
No. of reflections | 6254 |
No. of parameters | 280 |
No. of restraints | 6 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.52, −0.42 |
Computer programs: CrysAlis CCD (Oxford Diffraction 2009), CrysAlis RED (Oxford Diffraction, 2009), SIR92 (Altomare et al., 1994), SHELXL97 (Sheldrick, 2008), ORTEPII (Johnson, 1976), publCIF (Westrip, 2010).
Cu1—O1 | 1.9061 (11) | Cu1—N2 | 2.0136 (13) |
Cu1—O2 | 1.9072 (11) | Cu1—N3 | 2.3920 (15) |
Cu1—N1 | 2.0100 (14) | ||
O1—Cu1—O2 | 95.58 (5) | N1—Cu1—N2 | 82.08 (5) |
O1—Cu1—N1 | 171.80 (5) | O1—Cu1—N3 | 89.74 (5) |
O2—Cu1—N1 | 90.01 (5) | O2—Cu1—N3 | 94.16 (5) |
O1—Cu1—N2 | 91.52 (5) | N1—Cu1—N3 | 95.85 (5) |
O2—Cu1—N2 | 168.73 (5) | N2—Cu1—N3 | 94.62 (5) |
D—H···A | D—H | H···A | D···A | D—H···A |
O2W—H2B···N5 | 0.806 (15) | 2.077 (16) | 2.879 (2) | 173 (2) |
O2W—H2A···O1Wi | 0.795 (15) | 1.979 (16) | 2.761 (2) | 167 (2) |
O1W—H1A···N4 | 0.812 (15) | 2.104 (16) | 2.910 (2) | 172 (3) |
O1W—H1B···O2Wii | 0.778 (15) | 1.998 (15) | 2.742 (2) | 160 (2) |
Symmetry codes: (i) x, y+1, z; (ii) −x, −y+1, −z+2. |
Acknowledgements
The authors are grateful to the USB for financial support.
References
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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.
Metal dicyanamide (dca) compounds are of great interest due to the variety of observed topologies, this being related to the versatility of dca as a ligand, and its potential application in functional materials. In the present work, we describe the synthesis and crystal structure of a new CuII complex using the diimine ligand (phen), a bidentate ligand with two oxygen donor atoms (acac) and the anionic co-ligand dicyanamide (dca) (Fig. 1). To date, a number of higher - dimensional coordination networks of different transition metals have been reported with dca as a bridging ligand, but there are few compounds with dca acting as a monodentate ligand through the amide nitrogen. To the best of our knowledge, this complex is one of the few cases where dca is acting as a terminal ligand through the amide nitrogen. The molecule of the title compound is shown in Fig. 1 with selected bond lengths and angles listed in Table 1. In this molecule the coordination is square pyramidal with the two acac O and two phen N atoms forming the base. The apical position is occupied by the N of the dicyanamido ligand with the Cu—N3 distance (Cu1—N3 2.3920 (15) Å) being much greater than those in the basal plane Cu1—O1, 1.906 (1), 1.907 (1) Å and Cu1—N1, 2.010 (1), 2.014 (1) Å. The dicyanamide N atoms, N4, N5 are each involved in hydrogen bonds to water molecules. There are also hydrogen bonds between both the water molecules and their centrosymmetric pairs creating a one dimensional hydrogen bonded polymer in the b direction (see Fig. 2). Geometrical details are listed in Table 2.