Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536807034745/bg2071sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S1600536807034745/bg2071Isup2.hkl |
CCDC reference: 657614
Key indicators
- Single-crystal X-ray study
- T = 296 K
- Mean (C-C) = 0.005 Å
- R factor = 0.063
- wR factor = 0.169
- Data-to-parameter ratio = 24.0
checkCIF/PLATON results
No syntax errors found
Alert level C PLAT066_ALERT_1_C Predicted and Reported Transmissions Identical . ? PLAT220_ALERT_2_C Large Non-Solvent C Ueq(max)/Ueq(min) ... 3.44 Ratio PLAT222_ALERT_3_C Large Non-Solvent H Ueq(max)/Ueq(min) ... 3.78 Ratio PLAT230_ALERT_2_C Hirshfeld Test Diff for N2 - C14 .. 6.01 su PLAT360_ALERT_2_C Short C(sp3)-C(sp3) Bond C14 - C15 ... 1.43 Ang.
Alert level G PLAT794_ALERT_5_G Check Predicted Bond Valency for Zn (2) 1.90
0 ALERT level A = In general: serious problem 0 ALERT level B = Potentially serious problem 5 ALERT level C = Check and explain 1 ALERT level G = General alerts; check 1 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 3 ALERT type 2 Indicator that the structure model may be wrong or deficient 1 ALERT type 3 Indicator that the structure quality may be low 0 ALERT type 4 Improvement, methodology, query or suggestion 1 ALERT type 5 Informative message, check
For related literature, see: Adiwidjaja et al. (1978); Bigoli et al. (1972, 1973); Catterick et al. (1974); Györyová et al. (1995); Hökelek & Necefoğlu (1996, 1997); Hökelek et al. (1995); Shnulin et al. (1981); Szunyogová et al. (2007).
In the synthesis of the complex, sodium p-chlorobenzoate was preapared firstly, for what 0.02 mole p-chlorobenzoic acid was reacted with aqueous solution (50 ml) of 0,02 mole sodium bicarbonate. In order to remove completely the carbon dioxide formed in the reaction, the solution was stirred with heating at 363 K for 1 h and allowed to cool at room temperature. In another beaker, an aqueous solution (25 ml) of diethylnicotinamide (0.02 mole) was added to an aqueous solution (25 ml) of zinc nitrate (0,01 mole) and the previously prepared solution of sodium p-chlorobenzoate was added. This final mixed solution was kept unperturbed for 3–5 days, to allow for crystallization. The crystals formed were filtered off, washed with cold water and dried at room temperature. Analysis found: C 52.49, H 5.00, N 7.26%; calculated for C34H40Cl2N4O8Zn: C 53.10, H 5.24, N 7.29%.
Water H atoms were located in difference maps and refined with isotropic displacement factors. Other H atoms were placed in geometrically idealized positions and refined constrained to ride on their parent atoms with distances in the range 0.93–0.97 Å and with Uiso(H) = 1.2Ueq(C), or 1.5Ueq(C) for methyl atoms.
Zn(II)plays a key role in many biological processes and its interactions are a subject of considerable interest. The metal takes part in more than 300 metalloenzymes and many of its complexes have antimicrobial effect against bacteria, fungi and viruses (Szunyogová et al.; 2007). They are interesting both from a chemical point of view as due to their biological activity (Györyová et al., 1995). In particular, N,N'-Diethylnicotinamide (DENA) is an important respiratory stimulant (Bigoli et al., 1972). The structures of some complexes obtained from the reactions of transition metal(II) ions with DENA have been determined previously; (Bigoli et al., 1972; Hökelek et al., 1995; Hökelek & Necefoğlu, 1996, Hökelek & Necefoğlu, 1997).
On the other hand, the structure-function-coordination relationships of the arylcarboxylate ion in Zn(II) complexes of benzoic acid derivatives change depending on the nature and position of the substituted groups in the phenyl ring, the nature of the additional ligand molecule or solvent, and the pH and temperature of synthesis (Shnulin et al., 1981; Adiwidjaja et al., 1978). When pyridine and its derivatives are coordinated instead of water molecules, the structure is completely different (Catterick et al., 1974).
We report here the structure of the title compound, (I), a monomeric zinc complex combining both the chlorobenzoate and diethylnicotinamide ligands.
Fig. 1 shows an ellipsoid plot of (I). The Zn cation is located on a symmetry centre in a slightly distorted octahedral environment. The metal is coordinated by two O atoms from two equivalent carboxylate groups and two O atoms from two water molecules to form a distorted square-planar base (Table 1). Two pyridine N atoms from diethylnicotinamide (DENA) ligands (Table 1), complete the Jahn-Teller distorted octahedral coordination at a longer distance (Zn—N: 2.168 (2) Å), in good agreement with values reported for other octahedrally coordinated ZnII complexes [viz., Zn(DENA)2(NCS)2.2H2O, Zn—N: 2.171 (4) Å; Bigoli et al.,1973]. The carboxylate group is approximately coplanar with the attached benzene ring, the dihedral angle between both planes being 2.8 (3)°. The pyridine and benzene rings are planar, the maximum deviation from the least-squares planes being -0.0072 (10) Å for atom C10 and 0.0006 (1) Å for atom C2. There is an intramolecular hydrogen bond between O1w and the carboxyl O3 (Table 2).
For related literature, see: Adiwidjaja et al. (1978); Bigoli et al. (1972, 1973); Catterick et al. (1974); Györyová et al. (1995); Hökelek & Necefoğlu (1996, 1997); Hökelek et al. (1995); Shnulin et al. (1981); Szunyogová et al. (2007).
Data collection: CrstalClear (Rigaku/MSC, 2005); cell refinement: CrstalClear; data reduction: CrstalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97.
[Zn(C7H4ClO2)2(C10H14N2O)2(H2O)2] | Z = 1 |
Mr = 768.99 | F(000) = 400 |
Triclinic, P1 | Dx = 1.389 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71069 Å |
a = 7.3570 (2) Å | Cell parameters from 25 reflections |
b = 8.6887 (10) Å | θ = 2.5–30.5° |
c = 15.9114 (10) Å | µ = 0.87 mm−1 |
α = 85.047 (5)° | T = 296 K |
β = 78.476 (5)° | Prism, yellow |
γ = 67.321 (4)° | 0.35 × 0.20 × 0.10 mm |
V = 919.49 (13) Å3 |
Rigaku R-AXIS RAPID-S diffractometer | 5615 independent reflections |
Radiation source: sealed X-ray tube | 3800 reflections with I > 2σ(I) |
Graphite Monochromator monochromator | Rint = 0.073 |
Detector resolution: 10.000 pixels mm-1 | θmax = 30.5°, θmin = 2.5° |
ω scans | h = −10→10 |
Absorption correction: multi-scan (Blessing, 1995) | k = −12→12 |
Tmin = 0.812, Tmax = 0.917 | l = −22→22 |
27286 measured reflections |
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)] = 0.063 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.169 | w = 1/[σ2(Fo2) + (0.0647P)2 + 0.5887P] where P = (Fo2 + 2Fc2)/3 |
S = 1.02 | (Δ/σ)max < 0.001 |
5615 reflections | Δρmax = 0.85 e Å−3 |
234 parameters | Δρmin = −0.44 e Å−3 |
0 restraints | Extinction correction: SHELXL97, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.029 (4) |
[Zn(C7H4ClO2)2(C10H14N2O)2(H2O)2] | γ = 67.321 (4)° |
Mr = 768.99 | V = 919.49 (13) Å3 |
Triclinic, P1 | Z = 1 |
a = 7.3570 (2) Å | Mo Kα radiation |
b = 8.6887 (10) Å | µ = 0.87 mm−1 |
c = 15.9114 (10) Å | T = 296 K |
α = 85.047 (5)° | 0.35 × 0.20 × 0.10 mm |
β = 78.476 (5)° |
Rigaku R-AXIS RAPID-S diffractometer | 5615 independent reflections |
Absorption correction: multi-scan (Blessing, 1995) | 3800 reflections with I > 2σ(I) |
Tmin = 0.812, Tmax = 0.917 | Rint = 0.073 |
27286 measured reflections |
R[F2 > 2σ(F2)] = 0.063 | 0 restraints |
wR(F2) = 0.169 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.02 | Δρmax = 0.85 e Å−3 |
5615 reflections | Δρmin = −0.44 e Å−3 |
234 parameters |
x | y | z | Uiso*/Ueq | ||
Zn | 0.0000 | 0.0000 | 0.0000 | 0.04307 (17) | |
Cl1 | 0.73554 (19) | 0.1583 (2) | −0.46678 (7) | 0.0998 (4) | |
O1W | 0.2219 (3) | 0.0161 (3) | 0.06412 (16) | 0.0526 (5) | |
H1A | 0.206 (6) | 0.113 (5) | 0.074 (2) | 0.057 (11)* | |
H1B | 0.184 (8) | −0.030 (7) | 0.115 (3) | 0.112 (19)* | |
O2 | 0.1110 (3) | 0.1211 (3) | −0.10540 (13) | 0.0477 (5) | |
O3 | −0.0778 (3) | 0.1279 (3) | −0.20065 (15) | 0.0588 (6) | |
O4 | 0.8388 (4) | −0.3286 (3) | −0.12444 (17) | 0.0645 (6) | |
N1 | 0.2253 (4) | −0.2349 (3) | −0.05050 (16) | 0.0448 (5) | |
N2 | 0.8313 (5) | −0.4147 (5) | −0.2505 (2) | 0.0748 (9) | |
C1 | 0.0786 (4) | 0.1282 (4) | −0.18056 (19) | 0.0430 (6) | |
C2 | 0.2437 (4) | 0.1359 (4) | −0.25251 (19) | 0.0437 (6) | |
C3 | 0.4176 (5) | 0.1423 (4) | −0.2350 (2) | 0.0494 (7) | |
H3 | 0.4325 | 0.1415 | −0.1783 | 0.059* | |
C4 | 0.5694 (5) | 0.1500 (5) | −0.3001 (2) | 0.0570 (8) | |
H4 | 0.6856 | 0.1547 | −0.2878 | 0.068* | |
C5 | 0.5441 (5) | 0.1503 (5) | −0.3838 (2) | 0.0616 (9) | |
C6 | 0.3747 (5) | 0.1419 (5) | −0.4034 (2) | 0.0617 (9) | |
H6 | 0.3610 | 0.1416 | −0.4602 | 0.074* | |
C7 | 0.2248 (5) | 0.1338 (4) | −0.3374 (2) | 0.0526 (7) | |
H7 | 0.1100 | 0.1270 | −0.3500 | 0.063* | |
C8 | 0.1959 (4) | −0.3783 (4) | −0.0406 (2) | 0.0477 (7) | |
H8 | 0.0743 | −0.3778 | −0.0096 | 0.057* | |
C9 | 0.3380 (5) | −0.5276 (4) | −0.0745 (2) | 0.0549 (8) | |
H9 | 0.3129 | −0.6253 | −0.0661 | 0.066* | |
C10 | 0.5181 (5) | −0.5280 (4) | −0.1210 (2) | 0.0530 (8) | |
H10 | 0.6159 | −0.6261 | −0.1452 | 0.064* | |
C11 | 0.5511 (4) | −0.3795 (4) | −0.13123 (19) | 0.0449 (6) | |
C12 | 0.4022 (4) | −0.2380 (4) | −0.09404 (19) | 0.0454 (6) | |
H12 | 0.4256 | −0.1394 | −0.0994 | 0.055* | |
C13 | 0.7496 (5) | −0.3702 (4) | −0.1696 (2) | 0.0513 (7) | |
C14 | 0.7386 (8) | −0.4727 (7) | −0.3088 (3) | 0.0960 (15) | |
H14A | 0.8306 | −0.5810 | −0.3312 | 0.115* | |
H14B | 0.6181 | −0.4854 | −0.2770 | 0.115* | |
C15 | 0.6889 (14) | −0.3581 (12) | −0.3789 (6) | 0.203 (5) | |
H15A | 0.6076 | −0.2485 | −0.3569 | 0.208* | |
H15B | 0.6163 | −0.3932 | −0.4120 | 0.208* | |
H15C | 0.8096 | −0.3560 | −0.4146 | 0.208* | |
C16 | 1.0387 (7) | −0.4206 (6) | −0.2822 (3) | 0.0845 (13) | |
H16A | 1.1175 | −0.4644 | −0.2373 | 0.101* | |
H16B | 1.1008 | −0.4953 | −0.3307 | 0.101* | |
C17 | 1.0383 (9) | −0.2539 (7) | −0.3086 (4) | 0.113 (2) | |
H17A | 0.9436 | −0.2030 | −0.3461 | 0.170* | |
H17B | 1.1696 | −0.2639 | −0.3380 | 0.170* | |
H17C | 1.0015 | −0.1860 | −0.2587 | 0.170* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Zn | 0.0364 (2) | 0.0470 (3) | 0.0430 (3) | −0.0135 (2) | −0.00279 (18) | −0.0062 (2) |
Cl1 | 0.0809 (7) | 0.1576 (13) | 0.0650 (6) | −0.0628 (8) | 0.0159 (5) | −0.0051 (7) |
O1W | 0.0482 (12) | 0.0575 (15) | 0.0573 (14) | −0.0236 (11) | −0.0112 (10) | −0.0056 (12) |
O2 | 0.0464 (11) | 0.0523 (12) | 0.0432 (11) | −0.0187 (10) | −0.0041 (9) | −0.0039 (9) |
O3 | 0.0438 (11) | 0.0772 (16) | 0.0568 (13) | −0.0241 (11) | −0.0124 (10) | 0.0062 (12) |
O4 | 0.0546 (13) | 0.0773 (17) | 0.0705 (16) | −0.0328 (13) | −0.0093 (12) | −0.0138 (13) |
N1 | 0.0382 (12) | 0.0461 (14) | 0.0473 (13) | −0.0146 (10) | −0.0026 (10) | −0.0045 (11) |
N2 | 0.0625 (18) | 0.108 (3) | 0.0594 (18) | −0.0429 (19) | 0.0088 (14) | −0.0224 (18) |
C1 | 0.0395 (13) | 0.0392 (14) | 0.0456 (15) | −0.0103 (11) | −0.0066 (11) | −0.0011 (12) |
C2 | 0.0420 (14) | 0.0414 (15) | 0.0452 (15) | −0.0136 (12) | −0.0064 (11) | −0.0020 (12) |
C3 | 0.0481 (16) | 0.0536 (18) | 0.0484 (16) | −0.0216 (14) | −0.0068 (13) | −0.0033 (13) |
C4 | 0.0489 (17) | 0.067 (2) | 0.059 (2) | −0.0275 (16) | −0.0064 (14) | −0.0006 (16) |
C5 | 0.0564 (19) | 0.076 (2) | 0.0484 (18) | −0.0264 (18) | 0.0024 (14) | −0.0033 (16) |
C6 | 0.059 (2) | 0.078 (2) | 0.0448 (17) | −0.0238 (18) | −0.0065 (14) | −0.0005 (16) |
C7 | 0.0481 (16) | 0.063 (2) | 0.0480 (17) | −0.0212 (15) | −0.0105 (13) | −0.0009 (14) |
C8 | 0.0421 (15) | 0.0508 (17) | 0.0502 (16) | −0.0177 (13) | −0.0059 (12) | −0.0055 (13) |
C9 | 0.0503 (17) | 0.0479 (17) | 0.067 (2) | −0.0197 (14) | −0.0063 (15) | −0.0078 (15) |
C10 | 0.0450 (16) | 0.0480 (17) | 0.063 (2) | −0.0124 (13) | −0.0068 (14) | −0.0152 (15) |
C11 | 0.0373 (13) | 0.0492 (16) | 0.0455 (15) | −0.0124 (12) | −0.0066 (11) | −0.0072 (13) |
C12 | 0.0398 (14) | 0.0452 (15) | 0.0496 (16) | −0.0151 (12) | −0.0040 (12) | −0.0055 (12) |
C13 | 0.0420 (15) | 0.0560 (18) | 0.0543 (18) | −0.0179 (14) | −0.0020 (13) | −0.0113 (14) |
C14 | 0.093 (3) | 0.130 (4) | 0.069 (3) | −0.050 (3) | −0.002 (2) | −0.011 (3) |
C15 | 0.155 (9) | 0.185 (12) | 0.152 (9) | −0.102 (9) | −0.100 (8) | 0.100 (9) |
C16 | 0.067 (2) | 0.085 (3) | 0.093 (3) | −0.030 (2) | 0.017 (2) | −0.024 (2) |
C17 | 0.120 (5) | 0.090 (4) | 0.117 (4) | −0.047 (3) | 0.025 (4) | −0.006 (3) |
Zn—O2i | 2.097 (2) | C6—C7 | 1.381 (5) |
Zn—O2 | 2.097 (2) | C6—H6 | 0.9300 |
Zn—O1Wi | 2.143 (2) | C7—H7 | 0.9300 |
Zn—O1W | 2.143 (2) | C8—C9 | 1.384 (4) |
Zn—N1 | 2.168 (2) | C8—H8 | 0.9300 |
Zn—N1i | 2.168 (2) | C9—C10 | 1.381 (5) |
Cl1—C5 | 1.746 (4) | C9—H9 | 0.9300 |
O1W—H1A | 0.83 (4) | C10—C11 | 1.393 (4) |
O1W—H1B | 0.91 (4) | C10—H10 | 0.9300 |
O2—C1 | 1.257 (3) | C11—C12 | 1.375 (4) |
O3—C1 | 1.255 (4) | C11—C13 | 1.496 (4) |
O4—C13 | 1.222 (4) | C12—H12 | 0.9300 |
N1—C8 | 1.336 (4) | C14—C15 | 1.435 (11) |
N1—C12 | 1.338 (4) | C14—H14A | 0.9700 |
N2—C13 | 1.328 (4) | C14—H14B | 0.9700 |
N2—C14 | 1.478 (6) | C15—H15A | 0.9600 |
N2—C16 | 1.489 (5) | C15—H15B | 0.9600 |
C1—C2 | 1.511 (4) | C15—H15C | 0.9600 |
C2—C3 | 1.385 (4) | C16—C17 | 1.473 (7) |
C2—C7 | 1.387 (4) | C16—H16A | 0.9700 |
C3—C4 | 1.381 (4) | C16—H16B | 0.9700 |
C3—H3 | 0.9300 | C17—H17A | 0.9600 |
C4—C5 | 1.382 (5) | C17—H17B | 0.9600 |
C4—H4 | 0.9300 | C17—H17C | 0.9600 |
C5—C6 | 1.373 (5) | ||
O2i—Zn—O2 | 180.0 | C6—C7—H7 | 119.7 |
O2i—Zn—O1Wi | 87.86 (9) | C2—C7—H7 | 119.7 |
O2—Zn—O1Wi | 92.14 (9) | N1—C8—C9 | 123.0 (3) |
O2i—Zn—O1W | 92.14 (9) | N1—C8—H8 | 118.5 |
O2—Zn—O1W | 87.86 (9) | C9—C8—H8 | 118.5 |
O1Wi—Zn—O1W | 180.00 (11) | C10—C9—C8 | 118.5 (3) |
O2i—Zn—N1 | 91.50 (9) | C10—C9—H9 | 120.8 |
O2—Zn—N1 | 88.50 (9) | C8—C9—H9 | 120.8 |
O1Wi—Zn—N1 | 93.59 (10) | C9—C10—C11 | 119.1 (3) |
O1W—Zn—N1 | 86.41 (10) | C9—C10—H10 | 120.5 |
O2i—Zn—N1i | 88.50 (9) | C11—C10—H10 | 120.5 |
O2—Zn—N1i | 91.50 (9) | C12—C11—C10 | 118.3 (3) |
O1Wi—Zn—N1i | 86.41 (10) | C12—C11—C13 | 117.8 (3) |
O1W—Zn—N1i | 93.59 (10) | C10—C11—C13 | 123.4 (3) |
N1—Zn—N1i | 180.00 (13) | N1—C12—C11 | 123.3 (3) |
Zn—O1W—H1A | 114 (3) | N1—C12—H12 | 118.4 |
Zn—O1W—H1B | 96 (3) | C11—C12—H12 | 118.4 |
H1A—O1W—H1B | 108 (4) | O4—C13—N2 | 120.8 (3) |
C1—O2—Zn | 126.4 (2) | O4—C13—C11 | 119.0 (3) |
C8—N1—C12 | 117.8 (3) | N2—C13—C11 | 120.1 (3) |
C8—N1—Zn | 123.0 (2) | C15—C14—N2 | 111.6 (6) |
C12—N1—Zn | 119.1 (2) | C15—C14—H14A | 108.9 |
C13—N2—C14 | 124.9 (3) | N2—C14—H14A | 108.9 |
C13—N2—C16 | 117.6 (3) | C15—C14—H14B | 108.9 |
C14—N2—C16 | 117.4 (3) | N2—C14—H14B | 108.9 |
O3—C1—O2 | 125.6 (3) | H14A—C14—H14B | 107.7 |
O3—C1—C2 | 117.6 (3) | C14—C15—H15A | 109.5 |
O2—C1—C2 | 116.8 (3) | C14—C15—H15B | 109.5 |
C3—C2—C7 | 118.8 (3) | H15A—C15—H15B | 109.5 |
C3—C2—C1 | 120.7 (3) | C14—C15—H15C | 109.5 |
C7—C2—C1 | 120.4 (3) | H15A—C15—H15C | 109.5 |
C4—C3—C2 | 121.4 (3) | H15B—C15—H15C | 109.5 |
C4—C3—H3 | 119.3 | C17—C16—N2 | 111.3 (4) |
C2—C3—H3 | 119.3 | C17—C16—H16A | 109.4 |
C3—C4—C5 | 118.2 (3) | N2—C16—H16A | 109.4 |
C3—C4—H4 | 120.9 | C17—C16—H16B | 109.4 |
C5—C4—H4 | 120.9 | N2—C16—H16B | 109.4 |
C6—C5—C4 | 121.9 (3) | H16A—C16—H16B | 108.0 |
C6—C5—Cl1 | 119.4 (3) | C16—C17—H17A | 109.5 |
C4—C5—Cl1 | 118.7 (3) | C16—C17—H17B | 109.5 |
C5—C6—C7 | 119.0 (3) | H17A—C17—H17B | 109.5 |
C5—C6—H6 | 120.5 | C16—C17—H17C | 109.5 |
C7—C6—H6 | 120.5 | H17A—C17—H17C | 109.5 |
C6—C7—C2 | 120.7 (3) | H17B—C17—H17C | 109.5 |
O1Wi—Zn—O2—C1 | −16.0 (2) | C3—C2—C7—C6 | −1.4 (5) |
O1W—Zn—O2—C1 | 164.0 (2) | C1—C2—C7—C6 | 179.6 (3) |
N1—Zn—O2—C1 | 77.5 (2) | C12—N1—C8—C9 | −1.2 (5) |
N1i—Zn—O2—C1 | −102.5 (2) | Zn—N1—C8—C9 | 178.5 (2) |
O2i—Zn—N1—C8 | 32.6 (2) | N1—C8—C9—C10 | −0.4 (5) |
O2—Zn—N1—C8 | −147.4 (2) | C8—C9—C10—C11 | 0.8 (5) |
O1W—Zn—N1—C8 | 124.6 (2) | C9—C10—C11—C12 | 0.2 (5) |
O2i—Zn—N1—C12 | −147.8 (2) | C9—C10—C11—C13 | 171.2 (3) |
O2—Zn—N1—C12 | 32.2 (2) | C8—N1—C12—C11 | 2.3 (4) |
O1Wi—Zn—N1—C12 | 124.3 (2) | Zn—N1—C12—C11 | −177.4 (2) |
O1W—Zn—N1—C12 | −55.7 (2) | C10—C11—C12—N1 | −1.8 (5) |
Zn—O2—C1—O3 | 30.9 (4) | C13—C11—C12—N1 | −173.4 (3) |
Zn—O2—C1—C2 | −148.4 (2) | C14—N2—C13—O4 | 177.6 (4) |
O3—C1—C2—C3 | 177.8 (3) | C16—N2—C13—O4 | 3.2 (6) |
O2—C1—C2—C3 | −2.9 (4) | C14—N2—C13—C11 | 1.0 (6) |
O3—C1—C2—C7 | −3.2 (4) | C16—N2—C13—C11 | −173.4 (4) |
O2—C1—C2—C7 | 176.1 (3) | C12—C11—C13—O4 | 57.2 (4) |
C7—C2—C3—C4 | 1.3 (5) | C10—C11—C13—O4 | −113.9 (4) |
C1—C2—C3—C4 | −179.8 (3) | C12—C11—C13—N2 | −126.1 (4) |
C2—C3—C4—C5 | −0.3 (5) | C10—C11—C13—N2 | 62.8 (5) |
C3—C4—C5—C6 | −0.6 (6) | C13—N2—C14—C15 | 114.2 (7) |
C3—C4—C5—Cl1 | −179.5 (3) | C16—N2—C14—C15 | −70.5 (8) |
C4—C5—C6—C7 | 0.4 (6) | C13—N2—C16—C17 | −82.4 (6) |
Cl1—C5—C6—C7 | 179.3 (3) | C14—N2—C16—C17 | 102.7 (5) |
C5—C6—C7—C2 | 0.6 (6) |
Symmetry code: (i) −x, −y, −z. |
D—H···A | D—H | H···A | D···A | D—H···A |
O1W—H1B···O3i | 0.91 (5) | 1.75 (5) | 2.654 (4) | 168 (5) |
Symmetry code: (i) −x, −y, −z. |
Experimental details
Crystal data | |
Chemical formula | [Zn(C7H4ClO2)2(C10H14N2O)2(H2O)2] |
Mr | 768.99 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 296 |
a, b, c (Å) | 7.3570 (2), 8.6887 (10), 15.9114 (10) |
α, β, γ (°) | 85.047 (5), 78.476 (5), 67.321 (4) |
V (Å3) | 919.49 (13) |
Z | 1 |
Radiation type | Mo Kα |
µ (mm−1) | 0.87 |
Crystal size (mm) | 0.35 × 0.20 × 0.10 |
Data collection | |
Diffractometer | Rigaku R-AXIS RAPID-S |
Absorption correction | Multi-scan (Blessing, 1995) |
Tmin, Tmax | 0.812, 0.917 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 27286, 5615, 3800 |
Rint | 0.073 |
(sin θ/λ)max (Å−1) | 0.715 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.063, 0.169, 1.02 |
No. of reflections | 5615 |
No. of parameters | 234 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.85, −0.44 |
Computer programs: CrstalClear (Rigaku/MSC, 2005), CrstalClear, SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), ORTEP-3 (Farrugia, 1997), SHELXL97.
D—H···A | D—H | H···A | D···A | D—H···A |
O1W—H1B···O3i | 0.91 (5) | 1.75 (5) | 2.654 (4) | 168 (5) |
Symmetry code: (i) −x, −y, −z. |
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Zn(II)plays a key role in many biological processes and its interactions are a subject of considerable interest. The metal takes part in more than 300 metalloenzymes and many of its complexes have antimicrobial effect against bacteria, fungi and viruses (Szunyogová et al.; 2007). They are interesting both from a chemical point of view as due to their biological activity (Györyová et al., 1995). In particular, N,N'-Diethylnicotinamide (DENA) is an important respiratory stimulant (Bigoli et al., 1972). The structures of some complexes obtained from the reactions of transition metal(II) ions with DENA have been determined previously; (Bigoli et al., 1972; Hökelek et al., 1995; Hökelek & Necefoğlu, 1996, Hökelek & Necefoğlu, 1997).
On the other hand, the structure-function-coordination relationships of the arylcarboxylate ion in Zn(II) complexes of benzoic acid derivatives change depending on the nature and position of the substituted groups in the phenyl ring, the nature of the additional ligand molecule or solvent, and the pH and temperature of synthesis (Shnulin et al., 1981; Adiwidjaja et al., 1978). When pyridine and its derivatives are coordinated instead of water molecules, the structure is completely different (Catterick et al., 1974).
We report here the structure of the title compound, (I), a monomeric zinc complex combining both the chlorobenzoate and diethylnicotinamide ligands.
Fig. 1 shows an ellipsoid plot of (I). The Zn cation is located on a symmetry centre in a slightly distorted octahedral environment. The metal is coordinated by two O atoms from two equivalent carboxylate groups and two O atoms from two water molecules to form a distorted square-planar base (Table 1). Two pyridine N atoms from diethylnicotinamide (DENA) ligands (Table 1), complete the Jahn-Teller distorted octahedral coordination at a longer distance (Zn—N: 2.168 (2) Å), in good agreement with values reported for other octahedrally coordinated ZnII complexes [viz., Zn(DENA)2(NCS)2.2H2O, Zn—N: 2.171 (4) Å; Bigoli et al.,1973]. The carboxylate group is approximately coplanar with the attached benzene ring, the dihedral angle between both planes being 2.8 (3)°. The pyridine and benzene rings are planar, the maximum deviation from the least-squares planes being -0.0072 (10) Å for atom C10 and 0.0006 (1) Å for atom C2. There is an intramolecular hydrogen bond between O1w and the carboxyl O3 (Table 2).