metal-organic compounds
Bis(3,5-dimethylpyrazole)[N-salicylidene-β-alaninato(2–)]copper(II) dihydrate
aSchool of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China, and bSchool of Chemistry and Chemical Engineering, Pingdingshan University, Pingdingshan 467000, People's Republic of China
*Correspondence e-mail: xiejm391@sohu.com
In the title compound, [Cu(C10H10NO3)(C5H8N2)2]·2H2O, the CuII atom is coordinated by three N atoms and two O atoms in a distorted square-pyramidal geometry. The crystal packing is stabilized by intermolecular O—H⋯O and N—H⋯O hydrogen bonds.
Related literature
For related literature, see: Plesch et al. (1997); Raso et al. (1996, 1999); Warda (1997, 1998a,b,c).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2000); cell SAINT (Bruker, 2000); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Sheldrick, 2000); software used to prepare material for publication: SHELXTL.
Supporting information
https://doi.org/10.1107/S1600536807067220/zl2042sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536807067220/zl2042Isup2.hkl
The title compound was synthesized as described in the literature (Plesch et al., 1997). To β-alanine (1.00 mmol) and lithium hydroxide monohydrate (1.00 mmol) in 10 ml of methanol was added salicylaldehyde (1.00 mmol in 10 ml of methanol). The yellow solution was stirred for 1.0 h at room temperature prior to cooling in an ice bath. The resultant mixture was added dropwise to copper (II) acetate monohydrate (1.00 mmol) and 3,5-dimethylpyrazole (2.00 mmol) in an aqueous methanolic solution (20 ml, 1;1 v/v), and heated with stirring for 2.0 h at 333 K. The dark green solution was filtered and left for several days, dark blue crystals had formed that were filtered off, washed with water, and dried under vacuum. Analysis found: C 50.12, H 6.04, N 14.93%; calculated: C 49.73, H 6.05, N 14.49%.
The positions of the H atoms of the water molecules were located in difference Fourier maps and refined freely along with an isotropic displacement parameter. Other H atoms were positioned geometrically and refined as riding atoms, with C—H = 0.93 (CH) and 0.97 Å (CH2) and Uiso(H) = 1.2Ueq(C), with C—H = 0.96 Å (CH3) and Uiso(H) = 1.5Ueq(C), and with N—H = 0.86 Å (NH) and Uiso(H) = 1.2Ueq(N).
Copper (II) complexes of tridentate Schiff base ligands of the N-alkylidene or N-arylidene aminoacidato type have attracted considerable interest due to their richness in structural diversity, their electrochemical properties and also due to their use as potential models for a number of important biological systems (Raso et al., 1999; Raso et al., 1996). Several stuctural studies have been performed on Schiff base copper (II) complexes derived from salicylaldehyde and animo acids (Warda, 1997, 1998a,b,c). In this context we present here the β-alanine)(3,5-dimethylprazole)2]copper(II), in the form of its dihydrate.
of the title CuII complex, (N-salicylidene-The structure consists of monomeric units with a square pyramidal copper center (Fig. 1). The four basal positions are occupied by the tridentate, dianionic Schiff base ligand, which furnishes an ONO donor set, with the fourth position occupied by a 3, 5-dimethylprazole N. The coordination sphere is completed by the nitrogen atom of the remaining 3,5-dimethylprazole ligand at the apical position. The two nitrogen heterocycles are planar and exhibit an angle of 37.1° and 79.7° with the plane of the tridentate Schiff base, respectively.
Two solvate water molecules are present in the
and hydrogen bonded with each other and the N—H groups of the 3,5-dimethylprazole ligands (see hydrogen bonding table). The interesting intermolecuelar hydrogen-bonding network also stabilizes the as a whole. H atoms of O(2w) hydrogen bond to the neighboring carboxylate oxygen O2 and H atoms of O(1w) to form H-bonds to form a two dimensional sheet (Fig. 2). A network of oxygen atoms is formed by above H-bonds (Fig. 3). In addition, all the 3,5-dimethylprazole N—H protons are hydrogen bonded to adjacent water molecules O(1w).For related literature, see: Plesch et al. (1997); Raso et al. (1996, 1999); Warda (1997, 1998a,b,c).
Data collection: SMART (Bruker, 2000); cell
SMART (Bruker, 2000); data reduction: SAINT (Bruker, 2000); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Sheldrick, 2000); software used to prepare material for publication: SHELXTL (Sheldrick, 2000).Fig. 1. The structure of the title compound, showing 30% probability displacement ellipsoids and the atom-numbering scheme. | |
Fig. 2. Two-dimensional network of the title compound formed by hydrogen bonds (dashed lines). | |
Fig. 3. The Plot of oxygen cluster formed between the title compound and water by hydrogen bonds (dashed lines). |
[Cu(C10H10NO3)(C5H8N2)2]·2H2O | F(000) = 1012 |
Mr = 483.02 | Dx = 1.434 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 5668 reflections |
a = 19.619 (4) Å | θ = 2.7–27.5° |
b = 8.2103 (15) Å | µ = 1.02 mm−1 |
c = 13.890 (3) Å | T = 298 K |
β = 91.493 (2)° | Block, blue |
V = 2236.7 (7) Å3 | 0.40 × 0.20 × 0.10 mm |
Z = 4 |
Bruker SMART CCD area-detector diffractometer | 3965 independent reflections |
Radiation source: fine-focus sealed tube | 3446 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.020 |
φ and ω scans | θmax = 25.1°, θmin = 2.7° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −18→23 |
Tmin = 0.686, Tmax = 0.905 | k = −9→9 |
11230 measured reflections | l = −16→15 |
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)] = 0.028 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.075 | w = 1/[σ2(Fo2) + (0.0352P)2 + 1.1315P] where P = (Fo2 + 2Fc2)/3 |
S = 1.05 | (Δ/σ)max = 0.001 |
3965 reflections | Δρmax = 0.24 e Å−3 |
301 parameters | Δρmin = −0.30 e Å−3 |
4 restraints | Extinction correction: SHELXL97 (Sheldrick, 1997), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.0056 (4) |
[Cu(C10H10NO3)(C5H8N2)2]·2H2O | V = 2236.7 (7) Å3 |
Mr = 483.02 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 19.619 (4) Å | µ = 1.02 mm−1 |
b = 8.2103 (15) Å | T = 298 K |
c = 13.890 (3) Å | 0.40 × 0.20 × 0.10 mm |
β = 91.493 (2)° |
Bruker SMART CCD area-detector diffractometer | 3965 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 3446 reflections with I > 2σ(I) |
Tmin = 0.686, Tmax = 0.905 | Rint = 0.020 |
11230 measured reflections |
R[F2 > 2σ(F2)] = 0.028 | 4 restraints |
wR(F2) = 0.075 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | Δρmax = 0.24 e Å−3 |
3965 reflections | Δρmin = −0.30 e Å−3 |
301 parameters |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'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. |
x | y | z | Uiso*/Ueq | ||
Cu1 | 0.274799 (12) | 0.57312 (3) | 0.850618 (16) | 0.02768 (10) | |
C1 | 0.41151 (10) | 0.4081 (3) | 0.95032 (15) | 0.0337 (5) | |
C2 | 0.41039 (10) | 0.4380 (3) | 0.84957 (16) | 0.0344 (5) | |
C3 | 0.46327 (11) | 0.3676 (3) | 0.79666 (18) | 0.0436 (5) | |
H3 | 0.4654 | 0.3886 | 0.7310 | 0.052* | |
C4 | 0.51165 (12) | 0.2691 (3) | 0.8394 (2) | 0.0492 (6) | |
H4 | 0.5453 | 0.2232 | 0.8020 | 0.059* | |
C5 | 0.51139 (12) | 0.2369 (3) | 0.9370 (2) | 0.0520 (6) | |
H5 | 0.5437 | 0.1675 | 0.9650 | 0.062* | |
C6 | 0.46268 (11) | 0.3089 (3) | 0.99167 (18) | 0.0453 (6) | |
H6 | 0.4635 | 0.2917 | 1.0579 | 0.054* | |
C7 | 0.36357 (11) | 0.4848 (3) | 1.01174 (15) | 0.0347 (5) | |
H7 | 0.3729 | 0.4800 | 1.0777 | 0.042* | |
C8 | 0.26606 (11) | 0.6335 (3) | 1.05720 (15) | 0.0400 (5) | |
H8A | 0.2552 | 0.7445 | 1.0385 | 0.048* | |
H8B | 0.2909 | 0.6371 | 1.1185 | 0.048* | |
C9 | 0.20079 (12) | 0.5386 (3) | 1.06855 (15) | 0.0408 (5) | |
H9A | 0.1748 | 0.5898 | 1.1187 | 0.049* | |
H9B | 0.2125 | 0.4297 | 1.0904 | 0.049* | |
C10 | 0.15528 (11) | 0.5240 (3) | 0.97922 (15) | 0.0347 (5) | |
C11 | 0.25299 (12) | 0.4552 (3) | 0.63387 (14) | 0.0351 (5) | |
C12 | 0.19798 (13) | 0.4452 (3) | 0.56921 (16) | 0.0447 (6) | |
H12 | 0.1986 | 0.4032 | 0.5071 | 0.054* | |
C13 | 0.14291 (12) | 0.5086 (3) | 0.61390 (16) | 0.0428 (6) | |
C14 | 0.07053 (15) | 0.5313 (5) | 0.5804 (2) | 0.0755 (9) | |
H14A | 0.0407 | 0.5058 | 0.6319 | 0.113* | |
H14B | 0.0608 | 0.4603 | 0.5268 | 0.113* | |
H14C | 0.0636 | 0.6423 | 0.5608 | 0.113* | |
C15 | 0.32401 (13) | 0.4047 (4) | 0.61519 (18) | 0.0553 (7) | |
H15A | 0.3537 | 0.4974 | 0.6211 | 0.083* | |
H15B | 0.3263 | 0.3608 | 0.5513 | 0.083* | |
H15C | 0.3381 | 0.3232 | 0.6611 | 0.083* | |
C16 | 0.30024 (11) | 0.9729 (3) | 0.83353 (15) | 0.0348 (5) | |
C17 | 0.26279 (12) | 1.1159 (3) | 0.81797 (15) | 0.0384 (5) | |
H17 | 0.2801 | 1.2206 | 0.8112 | 0.046* | |
C18 | 0.13169 (13) | 1.1672 (3) | 0.80069 (19) | 0.0516 (6) | |
H18A | 0.1246 | 1.1907 | 0.7335 | 0.077* | |
H18B | 0.1353 | 1.2673 | 0.8361 | 0.077* | |
H18C | 0.0939 | 1.1050 | 0.8234 | 0.077* | |
C19 | 0.37518 (13) | 0.9516 (3) | 0.8431 (2) | 0.0542 (7) | |
H19A | 0.3856 | 0.8382 | 0.8519 | 0.081* | |
H19B | 0.3922 | 1.0121 | 0.8978 | 0.081* | |
H19C | 0.3962 | 0.9906 | 0.7860 | 0.081* | |
C25 | 0.19588 (12) | 1.0715 (2) | 0.81468 (14) | 0.0341 (5) | |
N1 | 0.30915 (9) | 0.5592 (2) | 0.98439 (12) | 0.0309 (4) | |
N2 | 0.23273 (8) | 0.5216 (2) | 0.71677 (11) | 0.0299 (4) | |
N3 | 0.16542 (9) | 0.5538 (2) | 0.70181 (13) | 0.0365 (4) | |
H3A | 0.1401 | 0.5982 | 0.7440 | 0.044* | |
N4 | 0.25830 (9) | 0.8452 (2) | 0.83905 (12) | 0.0335 (4) | |
N5 | 0.19496 (9) | 0.9095 (2) | 0.82779 (12) | 0.0328 (4) | |
H5A | 0.1582 | 0.8527 | 0.8289 | 0.039* | |
O1 | 0.17828 (7) | 0.55934 (18) | 0.89740 (10) | 0.0343 (3) | |
O2 | 0.09666 (8) | 0.4747 (3) | 0.99071 (12) | 0.0606 (5) | |
O3 | 0.36475 (7) | 0.5303 (2) | 0.80579 (10) | 0.0399 (4) | |
O1W | 0.05960 (9) | 0.7752 (3) | 0.79001 (15) | 0.0595 (5) | |
O2W | 0.99231 (9) | 0.4897 (3) | 0.85715 (12) | 0.0528 (4) | |
H2WA | 0.9600 (11) | 0.500 (4) | 0.8961 (17) | 0.067 (9)* | |
H1WA | 0.0321 (12) | 0.706 (3) | 0.810 (2) | 0.072 (10)* | |
H2WB | 1.0271 (9) | 0.476 (4) | 0.8928 (16) | 0.058 (9)* | |
H1WB | 0.0404 (14) | 0.833 (3) | 0.7478 (17) | 0.076 (10)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cu1 | 0.02796 (15) | 0.02971 (15) | 0.02528 (14) | 0.00149 (10) | −0.00086 (10) | 0.00056 (10) |
C1 | 0.0271 (10) | 0.0321 (11) | 0.0416 (12) | −0.0041 (9) | −0.0038 (9) | 0.0014 (9) |
C2 | 0.0248 (10) | 0.0335 (12) | 0.0449 (12) | −0.0045 (9) | −0.0013 (9) | 0.0002 (9) |
C3 | 0.0332 (12) | 0.0468 (14) | 0.0512 (13) | 0.0005 (10) | 0.0059 (10) | −0.0008 (11) |
C4 | 0.0309 (12) | 0.0410 (14) | 0.0759 (18) | 0.0018 (10) | 0.0055 (12) | −0.0046 (12) |
C5 | 0.0307 (12) | 0.0446 (15) | 0.0803 (19) | 0.0048 (10) | −0.0062 (12) | 0.0098 (13) |
C6 | 0.0359 (12) | 0.0456 (14) | 0.0537 (14) | −0.0031 (11) | −0.0097 (11) | 0.0095 (11) |
C7 | 0.0357 (12) | 0.0363 (12) | 0.0317 (11) | −0.0081 (10) | −0.0078 (9) | 0.0032 (9) |
C8 | 0.0468 (13) | 0.0445 (13) | 0.0286 (10) | 0.0028 (11) | −0.0035 (10) | −0.0091 (10) |
C9 | 0.0422 (13) | 0.0541 (15) | 0.0263 (11) | 0.0059 (11) | 0.0041 (9) | 0.0004 (10) |
C10 | 0.0330 (12) | 0.0415 (13) | 0.0300 (11) | 0.0045 (10) | 0.0059 (9) | −0.0005 (9) |
C11 | 0.0477 (13) | 0.0314 (11) | 0.0263 (10) | −0.0006 (9) | 0.0025 (9) | 0.0011 (8) |
C12 | 0.0604 (16) | 0.0487 (14) | 0.0247 (11) | −0.0051 (12) | −0.0035 (11) | −0.0023 (10) |
C13 | 0.0454 (14) | 0.0493 (14) | 0.0330 (11) | −0.0087 (11) | −0.0105 (10) | 0.0027 (10) |
C14 | 0.0520 (17) | 0.113 (3) | 0.0606 (18) | −0.0044 (17) | −0.0240 (14) | −0.0052 (18) |
C15 | 0.0554 (16) | 0.0716 (19) | 0.0392 (13) | 0.0129 (14) | 0.0088 (12) | −0.0129 (12) |
C16 | 0.0413 (12) | 0.0326 (12) | 0.0308 (11) | −0.0064 (10) | 0.0041 (9) | −0.0008 (9) |
C17 | 0.0527 (14) | 0.0254 (11) | 0.0372 (11) | −0.0079 (10) | 0.0015 (10) | 0.0021 (9) |
C18 | 0.0555 (16) | 0.0375 (14) | 0.0612 (15) | 0.0095 (11) | −0.0110 (12) | −0.0007 (12) |
C19 | 0.0431 (14) | 0.0492 (16) | 0.0703 (18) | −0.0084 (12) | 0.0010 (13) | −0.0038 (13) |
C25 | 0.0485 (13) | 0.0274 (11) | 0.0262 (10) | 0.0008 (9) | −0.0030 (9) | 0.0004 (8) |
N1 | 0.0312 (9) | 0.0327 (10) | 0.0285 (9) | −0.0025 (7) | −0.0023 (7) | −0.0033 (7) |
N2 | 0.0317 (9) | 0.0307 (9) | 0.0271 (8) | 0.0010 (7) | −0.0015 (7) | −0.0007 (7) |
N3 | 0.0330 (10) | 0.0436 (11) | 0.0328 (9) | 0.0002 (8) | −0.0015 (8) | −0.0035 (8) |
N4 | 0.0357 (10) | 0.0283 (9) | 0.0364 (9) | −0.0011 (8) | −0.0008 (8) | 0.0014 (7) |
N5 | 0.0347 (10) | 0.0272 (9) | 0.0363 (9) | −0.0022 (7) | −0.0032 (8) | −0.0008 (7) |
O1 | 0.0303 (8) | 0.0470 (9) | 0.0256 (7) | −0.0002 (6) | 0.0016 (6) | 0.0016 (6) |
O2 | 0.0342 (9) | 0.1061 (16) | 0.0418 (9) | −0.0092 (10) | 0.0075 (7) | 0.0070 (10) |
O3 | 0.0344 (8) | 0.0507 (10) | 0.0346 (8) | 0.0080 (7) | 0.0022 (6) | 0.0064 (7) |
O1W | 0.0404 (10) | 0.0616 (13) | 0.0760 (13) | −0.0042 (9) | −0.0066 (10) | 0.0187 (11) |
O2W | 0.0421 (10) | 0.0761 (13) | 0.0402 (10) | −0.0044 (10) | 0.0021 (8) | −0.0014 (9) |
Cu1—O3 | 1.9191 (15) | C12—C13 | 1.363 (3) |
Cu1—N1 | 1.9634 (17) | C12—H12 | 0.9300 |
Cu1—O1 | 2.0211 (15) | C13—N3 | 1.340 (3) |
Cu1—N2 | 2.0584 (16) | C13—C14 | 1.495 (4) |
Cu1—N4 | 2.2625 (18) | C14—H14A | 0.9600 |
C1—C6 | 1.404 (3) | C14—H14B | 0.9600 |
C1—C2 | 1.420 (3) | C14—H14C | 0.9600 |
C1—C7 | 1.432 (3) | C15—H15A | 0.9600 |
C2—O3 | 1.310 (2) | C15—H15B | 0.9600 |
C2—C3 | 1.411 (3) | C15—H15C | 0.9600 |
C3—C4 | 1.370 (3) | C16—N4 | 1.336 (3) |
C3—H3 | 0.9300 | C16—C17 | 1.399 (3) |
C4—C5 | 1.381 (4) | C16—C19 | 1.483 (3) |
C4—H4 | 0.9300 | C17—C25 | 1.362 (3) |
C5—C6 | 1.371 (4) | C17—H17 | 0.9300 |
C5—H5 | 0.9300 | C18—C25 | 1.493 (3) |
C6—H6 | 0.9300 | C18—H18A | 0.9600 |
C7—N1 | 1.279 (3) | C18—H18B | 0.9600 |
C7—H7 | 0.9300 | C18—H18C | 0.9600 |
C8—N1 | 1.468 (3) | C19—H19A | 0.9600 |
C8—C9 | 1.511 (3) | C19—H19B | 0.9600 |
C8—H8A | 0.9700 | C19—H19C | 0.9600 |
C8—H8B | 0.9700 | C25—N5 | 1.343 (3) |
C9—C10 | 1.514 (3) | N2—N3 | 1.357 (2) |
C9—H9A | 0.9700 | N3—H3A | 0.8600 |
C9—H9B | 0.9700 | N4—N5 | 1.355 (2) |
C10—O2 | 1.234 (3) | N5—H5A | 0.8600 |
C10—O1 | 1.267 (2) | O1W—H1WA | 0.836 (10) |
C11—N2 | 1.343 (3) | O1W—H1WB | 0.839 (10) |
C11—C12 | 1.389 (3) | O2W—H2WA | 0.849 (10) |
C11—C15 | 1.483 (3) | O2W—H2WB | 0.840 (10) |
O3—Cu1—N1 | 90.03 (7) | C12—C13—C14 | 131.6 (2) |
O3—Cu1—O1 | 166.22 (7) | C13—C14—H14A | 109.5 |
N1—Cu1—O1 | 89.65 (6) | C13—C14—H14B | 109.5 |
O3—Cu1—N2 | 91.13 (7) | H14A—C14—H14B | 109.5 |
N1—Cu1—N2 | 164.27 (7) | C13—C14—H14C | 109.5 |
O1—Cu1—N2 | 85.52 (6) | H14A—C14—H14C | 109.5 |
O3—Cu1—N4 | 106.80 (7) | H14B—C14—H14C | 109.5 |
N1—Cu1—N4 | 99.76 (7) | C11—C15—H15A | 109.5 |
O1—Cu1—N4 | 86.82 (6) | C11—C15—H15B | 109.5 |
N2—Cu1—N4 | 94.91 (6) | H15A—C15—H15B | 109.5 |
C6—C1—C2 | 119.7 (2) | C11—C15—H15C | 109.5 |
C6—C1—C7 | 119.0 (2) | H15A—C15—H15C | 109.5 |
C2—C1—C7 | 121.18 (19) | H15B—C15—H15C | 109.5 |
O3—C2—C3 | 119.9 (2) | N4—C16—C17 | 110.2 (2) |
O3—C2—C1 | 123.36 (19) | N4—C16—C19 | 120.9 (2) |
C3—C2—C1 | 116.7 (2) | C17—C16—C19 | 128.9 (2) |
C4—C3—C2 | 121.8 (2) | C25—C17—C16 | 106.40 (19) |
C4—C3—H3 | 119.1 | C25—C17—H17 | 126.8 |
C2—C3—H3 | 119.1 | C16—C17—H17 | 126.8 |
C3—C4—C5 | 121.2 (2) | C25—C18—H18A | 109.5 |
C3—C4—H4 | 119.4 | C25—C18—H18B | 109.5 |
C5—C4—H4 | 119.4 | H18A—C18—H18B | 109.5 |
C6—C5—C4 | 118.8 (2) | C25—C18—H18C | 109.5 |
C6—C5—H5 | 120.6 | H18A—C18—H18C | 109.5 |
C4—C5—H5 | 120.6 | H18B—C18—H18C | 109.5 |
C5—C6—C1 | 121.7 (2) | C16—C19—H19A | 109.5 |
C5—C6—H6 | 119.2 | C16—C19—H19B | 109.5 |
C1—C6—H6 | 119.2 | H19A—C19—H19B | 109.5 |
N1—C7—C1 | 126.09 (19) | C16—C19—H19C | 109.5 |
N1—C7—H7 | 117.0 | H19A—C19—H19C | 109.5 |
C1—C7—H7 | 117.0 | H19B—C19—H19C | 109.5 |
N1—C8—C9 | 111.26 (18) | N5—C25—C17 | 106.07 (19) |
N1—C8—H8A | 109.4 | N5—C25—C18 | 121.7 (2) |
C9—C8—H8A | 109.4 | C17—C25—C18 | 132.3 (2) |
N1—C8—H8B | 109.4 | C7—N1—C8 | 119.03 (17) |
C9—C8—H8B | 109.4 | C7—N1—Cu1 | 124.89 (15) |
H8A—C8—H8B | 108.0 | C8—N1—Cu1 | 116.00 (13) |
C8—C9—C10 | 116.01 (18) | C11—N2—N3 | 104.85 (16) |
C8—C9—H9A | 108.3 | C11—N2—Cu1 | 137.47 (15) |
C10—C9—H9A | 108.3 | N3—N2—Cu1 | 117.63 (13) |
C8—C9—H9B | 108.3 | C13—N3—N2 | 112.44 (18) |
C10—C9—H9B | 108.3 | C13—N3—H3A | 123.8 |
H9A—C9—H9B | 107.4 | N2—N3—H3A | 123.8 |
O2—C10—O1 | 123.1 (2) | C16—N4—N5 | 104.60 (17) |
O2—C10—C9 | 116.86 (19) | C16—N4—Cu1 | 133.74 (15) |
O1—C10—C9 | 120.03 (19) | N5—N4—Cu1 | 121.46 (13) |
N2—C11—C12 | 109.6 (2) | C25—N5—N4 | 112.71 (18) |
N2—C11—C15 | 124.32 (19) | C25—N5—H5A | 123.6 |
C12—C11—C15 | 126.0 (2) | N4—N5—H5A | 123.6 |
C13—C12—C11 | 107.2 (2) | C10—O1—Cu1 | 131.28 (13) |
C13—C12—H12 | 126.4 | C2—O3—Cu1 | 125.34 (14) |
C11—C12—H12 | 126.4 | H1WA—O1W—H1WB | 110 (3) |
N3—C13—C12 | 105.9 (2) | H2WA—O2W—H2WB | 104 (3) |
N3—C13—C14 | 122.5 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H3A···O1W | 0.86 | 2.25 | 3.041 (3) | 153 |
N5—H5A···O1W | 0.86 | 2.09 | 2.911 (3) | 159 |
O1W—H1WA···O2Wi | 0.84 (1) | 2.05 (1) | 2.858 (3) | 161 (3) |
O2W—H2WB···O2ii | 0.84 (1) | 1.90 (1) | 2.729 (2) | 168 (3) |
O2W—H2WA···O2iii | 0.85 (1) | 1.96 (1) | 2.791 (2) | 166 (3) |
O1W—H1WB···O2Wiv | 0.84 (1) | 2.03 (1) | 2.865 (3) | 172 (3) |
Symmetry codes: (i) x−1, y, z; (ii) x+1, y, z; (iii) −x+1, −y+1, −z+2; (iv) −x+1, y+1/2, −z+3/2. |
Experimental details
Crystal data | |
Chemical formula | [Cu(C10H10NO3)(C5H8N2)2]·2H2O |
Mr | 483.02 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 298 |
a, b, c (Å) | 19.619 (4), 8.2103 (15), 13.890 (3) |
β (°) | 91.493 (2) |
V (Å3) | 2236.7 (7) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 1.02 |
Crystal size (mm) | 0.40 × 0.20 × 0.10 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.686, 0.905 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 11230, 3965, 3446 |
Rint | 0.020 |
(sin θ/λ)max (Å−1) | 0.596 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.028, 0.075, 1.05 |
No. of reflections | 3965 |
No. of parameters | 301 |
No. of restraints | 4 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.24, −0.30 |
Computer programs: SMART (Bruker, 2000), SAINT (Bruker, 2000), SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), SHELXTL (Sheldrick, 2000).
Cu1—O3 | 1.9191 (15) | Cu1—N2 | 2.0584 (16) |
Cu1—N1 | 1.9634 (17) | Cu1—N4 | 2.2625 (18) |
Cu1—O1 | 2.0211 (15) | ||
O3—Cu1—N1 | 90.03 (7) | O1—Cu1—N2 | 85.52 (6) |
O3—Cu1—O1 | 166.22 (7) | O3—Cu1—N4 | 106.80 (7) |
N1—Cu1—O1 | 89.65 (6) | N1—Cu1—N4 | 99.76 (7) |
O3—Cu1—N2 | 91.13 (7) | O1—Cu1—N4 | 86.82 (6) |
N1—Cu1—N2 | 164.27 (7) | N2—Cu1—N4 | 94.91 (6) |
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H3A···O1W | 0.86 | 2.25 | 3.041 (3) | 152.9 |
N5—H5A···O1W | 0.86 | 2.09 | 2.911 (3) | 158.5 |
O1W—H1WA···O2Wi | 0.836 (10) | 2.053 (14) | 2.858 (3) | 161 (3) |
O2W—H2WB···O2ii | 0.840 (10) | 1.902 (12) | 2.729 (2) | 168 (3) |
O2W—H2WA···O2iii | 0.849 (10) | 1.960 (13) | 2.791 (2) | 166 (3) |
O1W—H1WB···O2Wiv | 0.839 (10) | 2.033 (11) | 2.865 (3) | 172 (3) |
Symmetry codes: (i) x−1, y, z; (ii) x+1, y, z; (iii) −x+1, −y+1, −z+2; (iv) −x+1, y+1/2, −z+3/2. |
Acknowledgements
This research was supported by the National Sciences Foundation of China (grant No. 20405011), the Social Development Foundation of Jiangsu Province (grant No. BS2006038) and the High Technology Research Foundation of Jiangsu Province (grant No. BG2007025).
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.
Copper (II) complexes of tridentate Schiff base ligands of the N-alkylidene or N-arylidene aminoacidato type have attracted considerable interest due to their richness in structural diversity, their electrochemical properties and also due to their use as potential models for a number of important biological systems (Raso et al., 1999; Raso et al., 1996). Several stuctural studies have been performed on Schiff base copper (II) complexes derived from salicylaldehyde and animo acids (Warda, 1997, 1998a,b,c). In this context we present here the crystal structure of the title CuII complex, (N-salicylidene-β-alanine)(3,5-dimethylprazole)2]copper(II), in the form of its dihydrate.
The structure consists of monomeric units with a square pyramidal copper center (Fig. 1). The four basal positions are occupied by the tridentate, dianionic Schiff base ligand, which furnishes an ONO donor set, with the fourth position occupied by a 3, 5-dimethylprazole N. The coordination sphere is completed by the nitrogen atom of the remaining 3,5-dimethylprazole ligand at the apical position. The two nitrogen heterocycles are planar and exhibit an angle of 37.1° and 79.7° with the plane of the tridentate Schiff base, respectively.
Two solvate water molecules are present in the crystal lattice and hydrogen bonded with each other and the N—H groups of the 3,5-dimethylprazole ligands (see hydrogen bonding table). The interesting intermolecuelar hydrogen-bonding network also stabilizes the crystal structure as a whole. H atoms of O(2w) hydrogen bond to the neighboring carboxylate oxygen O2 and H atoms of O(1w) to form H-bonds to form a two dimensional sheet (Fig. 2). A network of oxygen atoms is formed by above H-bonds (Fig. 3). In addition, all the 3,5-dimethylprazole N—H protons are hydrogen bonded to adjacent water molecules O(1w).