metal-organic compounds
Bis{6-methoxy-2-[(4-methylphenyl)iminiomethyl]phenolato-κ2O,O′}bis(nitrato-κ2O,O′)cadmium(II)
aZhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua, Zhejiang 321004, People's Republic of China, and, College of Chemistry and Life Science, Zhejiang Normal University, Jinhua 321004, Zhejiang, People's Republic of China
*Correspondence e-mail: sky53@zjnu.cn
The Schiff base 6-methoxy-2-[(4-methylphenyl)iminomethyl]phenol (HL) forms a neutral complex with cadmium(II) nitrate, [Cd(NO3)2(C15H15NO2)2], in which the four O atoms of the two independent ligands are coordinated to the metal center and the protonated imine N atoms are involved in a hydrogen bond with the phenoxide group. Intramolecular N—H⋯O hydrogen-bonding interactions stabilize the structure. Each organic ligand assumes a zwitterionic form, chelating to the metal atom through the two O atoms, while the two nitrate groups also exhibit chelating behavior, leading to a distorted octahedral coordination of the Cd atom.
Related literature
For related literature, see: Dominiak et al. (2003); Elmali et al. (2003); Filarowski et al. (1998); Müller et al. (2001); Novitchi et al. (2008); Schiff (1864); West (1960); Woźniak et al. (1995); Yu et al. (2007); Zhao et al. (2007); Zhou et al. (2007); Zhou & Zhao (2007).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2006); cell SAINT (Bruker, 2006); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.
Supporting information
10.1107/S1600536808033539/at2640sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808033539/at2640Isup2.hkl
First, the ligand was prepared by the direct solid-phase reaction of o-vanillin (10 mmol, 1.5251 g) and p-toluidine (10 mmol, 1.0700 g). The reactants were ground in an agate mortar. The colour of the mixture changed from light yellow to orange. Then, for the preparation of the complex, the solution of Cd(NO3)2.4H2O (1 mmol, 0.3091 g) in methanol (10 ml) was added to a methanol (30 ml) solution of the Schiff base ligand (2 mmol, 0.4812 g). Red crystals were obtained after two weeks.
The H atoms bonded to C and N atoms were positioned geometrically and refined using a riding model [aromatic C—H = 0.93 Å, methylic C—H = 0.96 Å, N—H = 0.86 Å, Uiso(H) = 1.2 or 1.5Ueq(C)].
Data collection: APEX2 (Bruker, 2006); cell
SAINT (Bruker, 2006); data reduction: SAINT (Bruker, 2006); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. The molecular structure of complex, showing the atom-labelling scheme. Displacement ellipsoids are drawn at the 30% probability level. | |
Fig. 2. Eight-coordinate geometry of Cd. |
[Cd(NO3)2(C15H15NO2)2] | F(000) = 1464 |
Mr = 718.99 | Dx = 1.528 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 8740 reflections |
a = 10.8009 (4) Å | θ = 1.9–25.0° |
b = 27.3377 (10) Å | µ = 0.76 mm−1 |
c = 10.5878 (4) Å | T = 296 K |
β = 90.208 (2)° | Block, red |
V = 3126.3 (2) Å3 | 0.35 × 0.30 × 0.11 mm |
Z = 4 |
Bruker APEXII area-detector diffractometer | 5498 independent reflections |
Radiation source: fine-focus sealed tube | 3112 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.090 |
ω scans | θmax = 25.0°, θmin = 1.9° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −12→12 |
Tmin = 0.765, Tmax = 0.923 | k = −32→32 |
31192 measured reflections | l = −12→12 |
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)] = 0.059 | H-atom parameters constrained |
wR(F2) = 0.178 | w = 1/[σ2(Fo2) + (0.1P)2] where P = (Fo2 + 2Fc2)/3 |
S = 0.98 | (Δ/σ)max = 0.003 |
5498 reflections | Δρmax = 0.92 e Å−3 |
389 parameters | Δρmin = −0.75 e Å−3 |
3 restraints | Extinction correction: SHELXTL (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.0013 (4) |
[Cd(NO3)2(C15H15NO2)2] | V = 3126.3 (2) Å3 |
Mr = 718.99 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 10.8009 (4) Å | µ = 0.76 mm−1 |
b = 27.3377 (10) Å | T = 296 K |
c = 10.5878 (4) Å | 0.35 × 0.30 × 0.11 mm |
β = 90.208 (2)° |
Bruker APEXII area-detector diffractometer | 5498 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 3112 reflections with I > 2σ(I) |
Tmin = 0.765, Tmax = 0.923 | Rint = 0.090 |
31192 measured reflections |
R[F2 > 2σ(F2)] = 0.059 | 3 restraints |
wR(F2) = 0.178 | H-atom parameters constrained |
S = 0.98 | Δρmax = 0.92 e Å−3 |
5498 reflections | Δρmin = −0.75 e Å−3 |
389 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 | ||
Cd1 | 0.52395 (5) | 0.120056 (16) | 0.72358 (4) | 0.0622 (2) | |
N1 | 0.6050 (5) | 0.0522 (2) | 0.3386 (4) | 0.0599 (14) | |
H1D | 0.6111 | 0.0635 | 0.4141 | 0.072* | |
O1 | 0.2880 (4) | 0.08774 (19) | 0.6790 (4) | 0.0758 (14) | |
C1 | 1.0356 (10) | 0.0759 (4) | 0.0381 (11) | 0.177 (6) | |
H1A | 1.1044 | 0.0861 | 0.0893 | 0.265* | |
H1B | 1.0161 | 0.1011 | −0.0220 | 0.265* | |
H1C | 1.0567 | 0.0464 | −0.0060 | 0.265* | |
O2 | 0.4950 (4) | 0.07844 (15) | 0.5476 (3) | 0.0573 (11) | |
N2 | 0.2895 (5) | 0.2425 (2) | 0.5429 (5) | 0.0717 (16) | |
H2A | 0.3209 | 0.2145 | 0.5612 | 0.086* | |
C2 | 0.9263 (10) | 0.0668 (4) | 0.1200 (10) | 0.110 (3) | |
O3 | 0.6180 (5) | 0.18717 (18) | 0.8523 (4) | 0.0833 (16) | |
N3 | 0.4284 (6) | 0.0859 (3) | 0.9582 (6) | 0.0827 (19) | |
C3 | 0.9270 (9) | 0.0774 (3) | 0.2471 (10) | 0.110 (3) | |
H3A | 0.9996 | 0.0881 | 0.2857 | 0.132* | |
O4 | 0.4455 (4) | 0.19201 (16) | 0.6736 (4) | 0.0681 (12) | |
N4 | 0.7851 (7) | 0.1171 (3) | 0.6646 (8) | 0.088 (2) | |
C4 | 0.8199 (8) | 0.0723 (3) | 0.3176 (7) | 0.090 (2) | |
H4A | 0.8209 | 0.0800 | 0.4032 | 0.108* | |
O5 | 0.4001 (6) | 0.1286 (2) | 0.9256 (5) | 0.0974 (18) | |
C5 | 0.7126 (7) | 0.0561 (2) | 0.2624 (6) | 0.0632 (17) | |
O6 | 0.4965 (5) | 0.06211 (19) | 0.8850 (5) | 0.0908 (16) | |
C6 | 0.7084 (7) | 0.0448 (3) | 0.1345 (6) | 0.085 (2) | |
H6A | 0.6371 | 0.0326 | 0.0963 | 0.102* | |
O7 | 0.3892 (6) | 0.0678 (2) | 1.0554 (5) | 0.118 (2) | |
C7 | 0.8180 (10) | 0.0526 (4) | 0.0660 (8) | 0.107 (3) | |
H7A | 0.8161 | 0.0478 | −0.0209 | 0.129* | |
C8 | 0.4994 (7) | 0.0337 (2) | 0.3078 (6) | 0.0651 (19) | |
H8A | 0.4935 | 0.0178 | 0.2303 | 0.078* | |
O8 | 0.8962 (7) | 0.1137 (3) | 0.6465 (8) | 0.148 (3) | |
O9 | 0.7315 (5) | 0.0961 (2) | 0.7569 (5) | 0.0932 (15) | |
C9 | 0.3925 (7) | 0.0357 (2) | 0.3828 (6) | 0.0635 (18) | |
O10 | 0.7174 (5) | 0.1395 (2) | 0.5923 (5) | 0.0983 (17) | |
C10 | 0.2830 (8) | 0.0150 (3) | 0.3372 (7) | 0.082 (2) | |
H10A | 0.2832 | −0.0015 | 0.2604 | 0.098* | |
C11 | 0.1761 (9) | 0.0187 (3) | 0.4042 (8) | 0.103 (3) | |
H11A | 0.1039 | 0.0046 | 0.3730 | 0.124* | |
C12 | 0.1741 (8) | 0.0431 (3) | 0.5180 (7) | 0.089 (2) | |
H12A | 0.0999 | 0.0459 | 0.5617 | 0.107* | |
C13 | 0.2790 (6) | 0.0631 (2) | 0.5672 (6) | 0.0599 (17) | |
C14 | 0.3929 (6) | 0.0600 (2) | 0.5020 (5) | 0.0560 (16) | |
C15 | 0.1807 (7) | 0.0849 (3) | 0.7610 (7) | 0.098 (3) | |
H15B | 0.1649 | 0.0514 | 0.7821 | 0.147* | |
H15C | 0.1100 | 0.0984 | 0.7183 | 0.147* | |
H30A | 0.1965 | 0.1032 | 0.8369 | 0.147* | |
C16 | −0.1017 (8) | 0.2383 (4) | 0.1810 (8) | 0.135 (4) | |
H16A | −0.1112 | 0.2701 | 0.1441 | 0.203* | |
H16B | −0.1776 | 0.2288 | 0.2210 | 0.203* | |
H16C | −0.0817 | 0.2151 | 0.1161 | 0.203* | |
C17 | 0.0001 (9) | 0.2395 (3) | 0.2769 (9) | 0.1052 (15) | |
C18 | 0.0332 (8) | 0.2003 (3) | 0.3448 (8) | 0.1052 (15) | |
H18A | −0.0100 | 0.1714 | 0.3320 | 0.126* | |
C19 | 0.1278 (9) | 0.2004 (3) | 0.4330 (8) | 0.1052 (15) | |
H19A | 0.1452 | 0.1725 | 0.4799 | 0.126* | |
C20 | 0.1959 (9) | 0.2424 (3) | 0.4501 (9) | 0.1052 (15) | |
C21 | 0.1634 (8) | 0.2822 (3) | 0.3850 (8) | 0.105 (3) | |
H21A | 0.2063 | 0.3114 | 0.3967 | 0.126* | |
C22 | 0.0648 (8) | 0.2800 (3) | 0.2990 (8) | 0.105 (3) | |
H22A | 0.0434 | 0.3083 | 0.2553 | 0.126* | |
C23 | 0.3343 (7) | 0.2797 (3) | 0.6043 (6) | 0.0704 (19) | |
H23A | 0.3031 | 0.3105 | 0.5846 | 0.084* | |
C24 | 0.4257 (7) | 0.2769 (2) | 0.6977 (6) | 0.0648 (18) | |
C25 | 0.4601 (8) | 0.3203 (3) | 0.7604 (7) | 0.091 (3) | |
H25A | 0.4252 | 0.3500 | 0.7369 | 0.109* | |
C26 | 0.5450 (8) | 0.3182 (3) | 0.8558 (7) | 0.092 (3) | |
H26A | 0.5659 | 0.3467 | 0.8988 | 0.111* | |
C27 | 0.6008 (8) | 0.2744 (3) | 0.8898 (6) | 0.081 (2) | |
H27A | 0.6598 | 0.2737 | 0.9540 | 0.097* | |
C28 | 0.5685 (7) | 0.2320 (3) | 0.8280 (6) | 0.0646 (18) | |
C29 | 0.4791 (6) | 0.2322 (2) | 0.7297 (6) | 0.0576 (16) | |
C30 | 0.6976 (8) | 0.1818 (3) | 0.9596 (7) | 0.105 (3) | |
H30B | 0.7201 | 0.2136 | 0.9910 | 0.158* | |
H30C | 0.7709 | 0.1644 | 0.9355 | 0.158* | |
H30D | 0.6551 | 0.1640 | 1.0244 | 0.158* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cd1 | 0.0739 (4) | 0.0603 (4) | 0.0524 (3) | 0.0070 (3) | −0.0105 (2) | −0.0061 (2) |
N1 | 0.074 (4) | 0.060 (3) | 0.047 (3) | 0.005 (3) | 0.000 (3) | −0.003 (2) |
O1 | 0.057 (3) | 0.108 (4) | 0.062 (3) | −0.009 (3) | 0.013 (2) | −0.016 (3) |
C1 | 0.154 (11) | 0.172 (12) | 0.206 (12) | −0.010 (9) | 0.122 (10) | 0.007 (10) |
O2 | 0.057 (3) | 0.067 (3) | 0.048 (2) | −0.005 (2) | −0.003 (2) | −0.012 (2) |
N2 | 0.087 (4) | 0.056 (4) | 0.072 (4) | 0.002 (3) | −0.016 (3) | 0.000 (3) |
C2 | 0.114 (8) | 0.111 (8) | 0.106 (8) | 0.015 (6) | 0.059 (7) | 0.008 (6) |
O3 | 0.099 (4) | 0.074 (4) | 0.076 (3) | 0.013 (3) | −0.043 (3) | −0.019 (3) |
N3 | 0.093 (5) | 0.099 (6) | 0.055 (4) | 0.011 (4) | −0.013 (3) | 0.002 (4) |
C3 | 0.101 (7) | 0.096 (7) | 0.134 (8) | −0.018 (5) | 0.038 (6) | −0.008 (6) |
O4 | 0.080 (3) | 0.056 (3) | 0.069 (3) | 0.002 (2) | −0.022 (2) | −0.009 (2) |
N4 | 0.075 (5) | 0.099 (6) | 0.090 (5) | −0.002 (4) | 0.001 (4) | −0.023 (4) |
C4 | 0.099 (7) | 0.096 (6) | 0.075 (5) | −0.008 (5) | 0.026 (5) | −0.006 (4) |
O5 | 0.128 (5) | 0.097 (5) | 0.068 (3) | 0.024 (4) | 0.014 (2) | −0.012 (3) |
C5 | 0.073 (5) | 0.060 (4) | 0.056 (4) | 0.014 (4) | 0.019 (3) | 0.004 (3) |
O6 | 0.126 (5) | 0.078 (3) | 0.069 (3) | 0.021 (3) | 0.010 (3) | 0.0088 (19) |
C6 | 0.091 (6) | 0.108 (6) | 0.054 (4) | 0.028 (5) | 0.008 (4) | 0.001 (4) |
O7 | 0.120 (5) | 0.160 (6) | 0.074 (4) | −0.002 (4) | 0.021 (3) | 0.033 (4) |
C7 | 0.138 (9) | 0.119 (8) | 0.065 (5) | 0.046 (7) | 0.041 (6) | 0.012 (5) |
C8 | 0.102 (6) | 0.053 (4) | 0.041 (3) | 0.000 (4) | −0.003 (4) | −0.004 (3) |
O8 | 0.069 (5) | 0.185 (8) | 0.190 (8) | 0.017 (4) | −0.015 (5) | −0.039 (5) |
O9 | 0.086 (2) | 0.099 (4) | 0.095 (4) | 0.027 (3) | −0.017 (3) | −0.006 (3) |
C9 | 0.088 (5) | 0.053 (4) | 0.049 (4) | −0.006 (4) | −0.002 (3) | −0.004 (3) |
O10 | 0.074 (4) | 0.129 (5) | 0.092 (4) | 0.000 (4) | −0.020 (3) | 0.018 (4) |
C10 | 0.097 (7) | 0.078 (5) | 0.070 (5) | −0.020 (5) | −0.010 (4) | −0.020 (4) |
C11 | 0.092 (7) | 0.118 (8) | 0.100 (7) | −0.039 (6) | −0.005 (5) | −0.007 (6) |
C12 | 0.079 (6) | 0.103 (7) | 0.084 (5) | −0.025 (5) | −0.003 (4) | −0.001 (5) |
C13 | 0.055 (4) | 0.067 (5) | 0.058 (4) | −0.004 (3) | 0.005 (3) | −0.002 (3) |
C14 | 0.076 (5) | 0.047 (4) | 0.045 (3) | −0.003 (3) | −0.004 (3) | 0.001 (3) |
C15 | 0.076 (6) | 0.126 (8) | 0.091 (6) | 0.003 (5) | 0.028 (4) | −0.021 (5) |
C16 | 0.098 (8) | 0.212 (13) | 0.097 (7) | 0.001 (7) | −0.038 (6) | −0.023 (7) |
C17 | 0.121 (4) | 0.090 (4) | 0.104 (3) | −0.013 (3) | −0.045 (3) | −0.003 (3) |
C18 | 0.121 (4) | 0.090 (4) | 0.104 (3) | −0.013 (3) | −0.045 (3) | −0.003 (3) |
C19 | 0.121 (4) | 0.090 (4) | 0.104 (3) | −0.013 (3) | −0.045 (3) | −0.003 (3) |
C20 | 0.121 (4) | 0.090 (4) | 0.104 (3) | −0.013 (3) | −0.045 (3) | −0.003 (3) |
C21 | 0.113 (7) | 0.086 (6) | 0.116 (7) | −0.010 (5) | −0.053 (6) | 0.017 (5) |
C22 | 0.098 (7) | 0.109 (8) | 0.108 (7) | 0.006 (5) | −0.041 (5) | 0.019 (5) |
C23 | 0.078 (5) | 0.057 (5) | 0.076 (5) | 0.012 (4) | −0.006 (4) | 0.001 (4) |
C24 | 0.082 (5) | 0.060 (4) | 0.053 (4) | −0.001 (4) | −0.015 (4) | 0.000 (3) |
C25 | 0.131 (8) | 0.058 (5) | 0.083 (5) | −0.003 (4) | −0.031 (5) | −0.005 (4) |
C26 | 0.122 (8) | 0.066 (5) | 0.089 (6) | −0.011 (5) | −0.020 (5) | −0.018 (4) |
C27 | 0.107 (7) | 0.079 (6) | 0.056 (4) | −0.015 (5) | −0.021 (4) | −0.012 (4) |
C28 | 0.069 (5) | 0.074 (5) | 0.051 (4) | −0.001 (4) | −0.004 (3) | −0.008 (3) |
C29 | 0.060 (4) | 0.057 (4) | 0.056 (4) | −0.001 (3) | −0.003 (3) | −0.006 (3) |
C30 | 0.125 (8) | 0.107 (7) | 0.083 (5) | 0.019 (6) | −0.048 (5) | −0.013 (5) |
Cd1—O2 | 2.204 (4) | C9—C10 | 1.397 (9) |
Cd1—O4 | 2.205 (4) | C9—C14 | 1.426 (8) |
Cd1—O6 | 2.350 (5) | C10—C11 | 1.361 (11) |
Cd1—O9 | 2.361 (5) | C10—H10A | 0.9300 |
Cd1—O3 | 2.500 (5) | C11—C12 | 1.377 (11) |
Cd1—O5 | 2.538 (5) | C11—H11A | 0.9300 |
Cd1—O10 | 2.569 (6) | C12—C13 | 1.360 (9) |
N1—C8 | 1.288 (8) | C12—H12A | 0.9300 |
N1—C5 | 1.421 (8) | C13—C14 | 1.416 (9) |
N1—H1D | 0.8600 | C15—H15B | 0.9600 |
O1—C13 | 1.366 (7) | C15—H15C | 0.9600 |
O1—C15 | 1.452 (7) | C15—H30A | 0.9600 |
C1—C2 | 1.488 (11) | C16—C17 | 1.495 (11) |
C1—H1A | 0.9600 | C16—H16A | 0.9600 |
C1—H1B | 0.9600 | C16—H16B | 0.9600 |
C1—H1C | 0.9600 | C16—H16C | 0.9600 |
O2—C14 | 1.304 (7) | C17—C22 | 1.330 (11) |
N2—C23 | 1.299 (8) | C17—C18 | 1.337 (12) |
N2—C20 | 1.407 (9) | C18—C19 | 1.381 (11) |
N2—H2A | 0.8600 | C18—H18A | 0.9300 |
C2—C7 | 1.356 (12) | C19—C20 | 1.376 (12) |
C2—C3 | 1.376 (12) | C19—H19A | 0.9300 |
O3—C28 | 1.361 (8) | C20—C21 | 1.334 (11) |
O3—C30 | 1.429 (8) | C21—C22 | 1.400 (10) |
N3—O7 | 1.220 (7) | C21—H21A | 0.9300 |
N3—O6 | 1.253 (7) | C22—H22A | 0.9300 |
N3—O5 | 1.254 (8) | C23—C24 | 1.397 (9) |
C3—C4 | 1.386 (10) | C23—H23A | 0.9300 |
C3—H3A | 0.9300 | C24—C29 | 1.394 (9) |
O4—C29 | 1.299 (7) | C24—C25 | 1.407 (9) |
N4—O8 | 1.219 (9) | C25—C26 | 1.362 (10) |
N4—O10 | 1.222 (9) | C25—H25A | 0.9300 |
N4—O9 | 1.274 (8) | C26—C27 | 1.390 (10) |
C4—C5 | 1.371 (10) | C26—H26A | 0.9300 |
C4—H4A | 0.9300 | C27—C28 | 1.374 (9) |
C5—C6 | 1.389 (9) | C27—H27A | 0.9300 |
C6—C7 | 1.407 (11) | C28—C29 | 1.418 (9) |
C6—H6A | 0.9300 | C30—H30B | 0.9600 |
C7—H7A | 0.9300 | C30—H30C | 0.9600 |
C8—C9 | 1.404 (9) | C30—H30D | 0.9600 |
C8—H8A | 0.9300 | ||
O2—Cd1—O4 | 101.81 (15) | C11—C10—C9 | 120.6 (7) |
O2—Cd1—O6 | 104.42 (17) | C11—C10—H10A | 119.7 |
O4—Cd1—O6 | 136.58 (18) | C9—C10—H10A | 119.7 |
O2—Cd1—O9 | 96.59 (17) | C10—C11—C12 | 120.6 (8) |
O4—Cd1—O9 | 130.3 (2) | C10—C11—H11A | 119.7 |
O6—Cd1—O9 | 80.0 (2) | C12—C11—H11A | 119.7 |
O2—Cd1—O3 | 153.63 (17) | C13—C12—C11 | 120.9 (8) |
O4—Cd1—O3 | 68.35 (15) | C13—C12—H12A | 119.5 |
O6—Cd1—O3 | 98.63 (18) | C11—C12—H12A | 119.5 |
O9—Cd1—O3 | 74.81 (18) | C12—C13—O1 | 126.0 (6) |
O2—Cd1—O5 | 133.35 (18) | C12—C13—C14 | 120.9 (6) |
O4—Cd1—O5 | 85.23 (18) | O1—C13—C14 | 113.1 (5) |
O6—Cd1—O5 | 51.73 (17) | O2—C14—C13 | 122.1 (5) |
O9—Cd1—O5 | 113.7 (2) | O2—C14—C9 | 120.5 (6) |
O3—Cd1—O5 | 71.77 (19) | C13—C14—C9 | 117.3 (6) |
O2—Cd1—O10 | 76.28 (18) | O1—C15—H15B | 109.5 |
O4—Cd1—O10 | 89.88 (18) | O1—C15—H15C | 109.5 |
O6—Cd1—O10 | 129.65 (19) | H15B—C15—H15C | 109.5 |
O9—Cd1—O10 | 50.56 (19) | O1—C15—H30A | 109.5 |
O3—Cd1—O10 | 79.22 (19) | H15B—C15—H30A | 109.5 |
O5—Cd1—O10 | 150.3 (2) | H15C—C15—H30A | 109.5 |
C8—N1—C5 | 127.6 (6) | C17—C16—H16A | 109.5 |
C8—N1—H1D | 116.2 | C17—C16—H16B | 109.5 |
C5—N1—H1D | 116.2 | H16A—C16—H16B | 109.5 |
C13—O1—C15 | 116.0 (5) | C17—C16—H16C | 109.5 |
C2—C1—H1A | 109.5 | H16A—C16—H16C | 109.5 |
C2—C1—H1B | 109.5 | H16B—C16—H16C | 109.5 |
H1A—C1—H1B | 109.5 | C22—C17—C18 | 115.6 (8) |
C2—C1—H1C | 109.5 | C22—C17—C16 | 121.5 (9) |
H1A—C1—H1C | 109.5 | C18—C17—C16 | 122.9 (9) |
H1B—C1—H1C | 109.5 | C17—C18—C19 | 123.9 (9) |
C14—O2—Cd1 | 129.0 (4) | C17—C18—H18A | 118.0 |
C23—N2—C20 | 128.0 (7) | C19—C18—H18A | 118.0 |
C23—N2—H2A | 116.0 | C20—C19—C18 | 118.9 (9) |
C20—N2—H2A | 116.0 | C20—C19—H19A | 120.5 |
C7—C2—C3 | 118.3 (8) | C18—C19—H19A | 120.5 |
C7—C2—C1 | 119.1 (10) | C21—C20—C19 | 118.2 (9) |
C3—C2—C1 | 122.2 (11) | C21—C20—N2 | 123.2 (8) |
C28—O3—C30 | 118.5 (6) | C19—C20—N2 | 118.4 (8) |
C28—O3—Cd1 | 113.5 (4) | C20—C21—C22 | 120.0 (9) |
C30—O3—Cd1 | 126.9 (5) | C20—C21—H21A | 120.0 |
O7—N3—O6 | 121.2 (8) | C22—C21—H21A | 120.0 |
O7—N3—O5 | 121.6 (7) | C17—C22—C21 | 123.2 (9) |
O6—N3—O5 | 117.2 (6) | C17—C22—H22A | 118.4 |
C2—C3—C4 | 120.3 (9) | C21—C22—H22A | 118.4 |
C2—C3—H3A | 119.9 | N2—C23—C24 | 125.0 (7) |
C4—C3—H3A | 119.9 | N2—C23—H23A | 117.5 |
C29—O4—Cd1 | 122.5 (4) | C24—C23—H23A | 117.5 |
O8—N4—O10 | 121.9 (8) | C29—C24—C23 | 120.6 (6) |
O8—N4—O9 | 122.4 (9) | C29—C24—C25 | 121.1 (6) |
O10—N4—O9 | 115.7 (7) | C23—C24—C25 | 118.3 (7) |
C5—C4—C3 | 120.6 (8) | C26—C25—C24 | 119.4 (7) |
C5—C4—H4A | 119.7 | C26—C25—H25A | 120.3 |
C3—C4—H4A | 119.7 | C24—C25—H25A | 120.3 |
N3—O5—Cd1 | 91.0 (4) | C25—C26—C27 | 121.2 (7) |
C4—C5—C6 | 120.8 (7) | C25—C26—H26A | 119.4 |
C4—C5—N1 | 118.3 (6) | C27—C26—H26A | 119.4 |
C6—C5—N1 | 120.9 (7) | C28—C27—C26 | 119.7 (7) |
N3—O6—Cd1 | 100.1 (4) | C28—C27—H27A | 120.2 |
C5—C6—C7 | 116.4 (8) | C26—C27—H27A | 120.2 |
C5—C6—H6A | 121.8 | O3—C28—C27 | 124.7 (7) |
C7—C6—H6A | 121.8 | O3—C28—C29 | 114.1 (6) |
C2—C7—C6 | 123.5 (8) | C27—C28—C29 | 121.2 (7) |
C2—C7—H7A | 118.3 | O4—C29—C24 | 121.1 (6) |
C6—C7—H7A | 118.3 | O4—C29—C28 | 121.4 (6) |
N1—C8—C9 | 124.7 (6) | C24—C29—C28 | 117.5 (6) |
N1—C8—H8A | 117.6 | O3—C30—H30B | 109.5 |
C9—C8—H8A | 117.6 | O3—C30—H30C | 109.5 |
N4—O9—Cd1 | 101.2 (5) | H30B—C30—H30C | 109.5 |
C10—C9—C8 | 119.0 (6) | O3—C30—H30D | 109.5 |
C10—C9—C14 | 119.7 (7) | H30B—C30—H30D | 109.5 |
C8—C9—C14 | 121.3 (6) | H30C—C30—H30D | 109.5 |
N4—O10—Cd1 | 92.5 (5) | ||
O4—Cd1—O2—C14 | −75.0 (5) | N1—C8—C9—C14 | 0.9 (11) |
O6—Cd1—O2—C14 | 70.1 (5) | O8—N4—O10—Cd1 | 179.5 (7) |
O9—Cd1—O2—C14 | 151.4 (5) | O9—N4—O10—Cd1 | 2.0 (7) |
O3—Cd1—O2—C14 | −139.7 (5) | O2—Cd1—O10—N4 | −112.0 (5) |
O5—Cd1—O2—C14 | 19.6 (6) | O4—Cd1—O10—N4 | 145.9 (5) |
O10—Cd1—O2—C14 | −161.9 (5) | O6—Cd1—O10—N4 | −14.4 (6) |
O2—Cd1—O3—C28 | 74.8 (6) | O9—Cd1—O10—N4 | −1.2 (4) |
O4—Cd1—O3—C28 | 2.5 (4) | O3—Cd1—O10—N4 | 77.9 (5) |
O6—Cd1—O3—C28 | −134.4 (5) | O5—Cd1—O10—N4 | 65.7 (7) |
O9—Cd1—O3—C28 | 148.5 (5) | C8—C9—C10—C11 | −176.4 (7) |
O5—Cd1—O3—C28 | −89.6 (5) | C14—C9—C10—C11 | 1.5 (11) |
O10—Cd1—O3—C28 | 96.7 (5) | C9—C10—C11—C12 | 0.2 (14) |
O2—Cd1—O3—C30 | −117.5 (6) | C10—C11—C12—C13 | −1.5 (14) |
O4—Cd1—O3—C30 | 170.3 (7) | C11—C12—C13—O1 | −179.6 (7) |
O6—Cd1—O3—C30 | 33.4 (6) | C11—C12—C13—C14 | 1.0 (12) |
O9—Cd1—O3—C30 | −43.7 (6) | C15—O1—C13—C12 | 11.0 (10) |
O5—Cd1—O3—C30 | 78.2 (6) | C15—O1—C13—C14 | −169.6 (6) |
O10—Cd1—O3—C30 | −95.5 (6) | Cd1—O2—C14—C13 | −2.6 (8) |
C7—C2—C3—C4 | 1.7 (15) | Cd1—O2—C14—C9 | 177.4 (4) |
C1—C2—C3—C4 | 174.4 (9) | C12—C13—C14—O2 | −179.3 (6) |
O2—Cd1—O4—C29 | −155.5 (5) | O1—C13—C14—O2 | 1.2 (9) |
O6—Cd1—O4—C29 | 78.3 (5) | C12—C13—C14—C9 | 0.7 (10) |
O9—Cd1—O4—C29 | −46.1 (6) | O1—C13—C14—C9 | −178.7 (5) |
O3—Cd1—O4—C29 | −1.1 (5) | C10—C9—C14—O2 | 178.1 (6) |
O5—Cd1—O4—C29 | 71.2 (5) | C8—C9—C14—O2 | −4.1 (9) |
O10—Cd1—O4—C29 | −79.5 (5) | C10—C9—C14—C13 | −1.9 (9) |
C2—C3—C4—C5 | 0.9 (14) | C8—C9—C14—C13 | 175.9 (6) |
O7—N3—O5—Cd1 | −178.1 (7) | C22—C17—C18—C19 | −0.1 (17) |
O6—N3—O5—Cd1 | 0.2 (7) | C16—C17—C18—C19 | 179.2 (9) |
O2—Cd1—O5—N3 | 71.9 (5) | C17—C18—C19—C20 | −2.3 (17) |
O4—Cd1—O5—N3 | 173.6 (5) | C18—C19—C20—C21 | 3.3 (16) |
O6—Cd1—O5—N3 | −0.2 (4) | C18—C19—C20—N2 | 178.1 (9) |
O9—Cd1—O5—N3 | −54.1 (5) | C23—N2—C20—C21 | 20.2 (15) |
O3—Cd1—O5—N3 | −117.6 (5) | C23—N2—C20—C19 | −154.3 (9) |
O10—Cd1—O5—N3 | −105.0 (5) | C19—C20—C21—C22 | −1.9 (16) |
C3—C4—C5—C6 | −0.5 (12) | N2—C20—C21—C22 | −176.5 (9) |
C3—C4—C5—N1 | −179.1 (7) | C18—C17—C22—C21 | 1.5 (17) |
C8—N1—C5—C4 | −173.1 (7) | C16—C17—C22—C21 | −177.8 (9) |
C8—N1—C5—C6 | 8.2 (10) | C20—C21—C22—C17 | −0.5 (17) |
O7—N3—O6—Cd1 | 178.0 (6) | C20—N2—C23—C24 | 178.5 (8) |
O5—N3—O6—Cd1 | −0.3 (8) | N2—C23—C24—C29 | 1.8 (12) |
O2—Cd1—O6—N3 | −134.3 (4) | N2—C23—C24—C25 | −176.7 (7) |
O4—Cd1—O6—N3 | −8.9 (6) | C29—C24—C25—C26 | −1.5 (12) |
O9—Cd1—O6—N3 | 131.4 (5) | C23—C24—C25—C26 | 177.1 (8) |
O3—Cd1—O6—N3 | 58.6 (5) | C24—C25—C26—C27 | 1.9 (14) |
O5—Cd1—O6—N3 | 0.2 (4) | C25—C26—C27—C28 | −1.2 (13) |
O10—Cd1—O6—N3 | 141.8 (4) | C30—O3—C28—C27 | 8.4 (11) |
C4—C5—C6—C7 | −2.2 (11) | Cd1—O3—C28—C27 | 177.3 (6) |
N1—C5—C6—C7 | 176.4 (6) | C30—O3—C28—C29 | −172.4 (6) |
C3—C2—C7—C6 | −4.7 (16) | Cd1—O3—C28—C29 | −3.6 (7) |
C1—C2—C7—C6 | −177.7 (8) | C26—C27—C28—O3 | 179.2 (7) |
C5—C6—C7—C2 | 5.0 (13) | C26—C27—C28—C29 | 0.1 (11) |
C5—N1—C8—C9 | −172.6 (6) | Cd1—O4—C29—C24 | −178.6 (5) |
O8—N4—O9—Cd1 | −179.7 (7) | Cd1—O4—C29—C28 | −0.5 (8) |
O10—N4—O9—Cd1 | −2.2 (8) | C23—C24—C29—O4 | 0.1 (10) |
O2—Cd1—O9—N4 | 67.4 (4) | C25—C24—C29—O4 | 178.6 (7) |
O4—Cd1—O9—N4 | −44.2 (5) | C23—C24—C29—C28 | −178.1 (6) |
O6—Cd1—O9—N4 | 170.9 (5) | C25—C24—C29—C28 | 0.4 (10) |
O3—Cd1—O9—N4 | −87.2 (4) | O3—C28—C29—O4 | 2.9 (9) |
O5—Cd1—O9—N4 | −148.9 (4) | C27—C28—C29—O4 | −177.9 (6) |
O10—Cd1—O9—N4 | 1.2 (4) | O3—C28—C29—C24 | −178.9 (6) |
N1—C8—C9—C10 | 178.8 (6) | C27—C28—C29—C24 | 0.3 (10) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1D···O2 | 0.86 | 1.94 | 2.616 (6) | 135 |
N2—H2A···O4 | 0.86 | 1.90 | 2.577 (7) | 135 |
Experimental details
Crystal data | |
Chemical formula | [Cd(NO3)2(C15H15NO2)2] |
Mr | 718.99 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 296 |
a, b, c (Å) | 10.8009 (4), 27.3377 (10), 10.5878 (4) |
β (°) | 90.208 (2) |
V (Å3) | 3126.3 (2) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.76 |
Crystal size (mm) | 0.35 × 0.30 × 0.11 |
Data collection | |
Diffractometer | Bruker APEXII area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.765, 0.923 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 31192, 5498, 3112 |
Rint | 0.090 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.059, 0.178, 0.98 |
No. of reflections | 5498 |
No. of parameters | 389 |
No. of restraints | 3 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.92, −0.75 |
Computer programs: APEX2 (Bruker, 2006), SAINT (Bruker, 2006), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1D···O2 | 0.86 | 1.94 | 2.616 (6) | 135 |
N2—H2A···O4 | 0.86 | 1.90 | 2.577 (7) | 135 |
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.
Since the Schiff bases, the products of condensation of carbonyl compounds with primary amines, were discovered in 1864 by Hugo Schiff (Schiff, 1864), the studies on this kind of compounds containing imine group were carried out widely in different application fields. And recently, the metal complexes with the Schiff base ligands derived from substituted salicylaldehyde and aniline, have received attention due to their applications in catalysis, nuclear medicine (Zhou et al., 2007), magnetism (Elmali et al., 2003) and novel structural features (Müller et al., 2001; Novitchi et al., 2008). They include complexes with a methoxy group in the ortho position (West, 1960) which can bind to the metal too. Zhao and co-workers had reported complexes of this series with several transitional and rare earth metals (Zhou & Zhao, 2007; Yu et al., 2007; Zhao et al., 2007). Here we decribe the synthesis and crystal structure of a new cadmium(II) complex (Fig. 1), Cd(HL)2(NO3)2, involving the Schiff base HL.
The most interesting feature of the complex is the two N—H···O intramolecular hydrogen bonds. In fact, there is a proton-transfer equilibrium between the OH and NH tautomers (Dominiak et al., 2003). And it is reported that the products of condensation of salicylaldehydes with anilines show intermolecular proton-transfer equilibrium and double fluorescence (Filarowski et al., 1998; Woźniak et al., 1995). In addition, the title complex has the Cd atom in a geometry that can be better described as a bicapped trigonal antiprism (Fig. 2).