metal-organic compounds\(\def\hfill{\hskip 5em}\def\hfil{\hskip 3em}\def\eqno#1{\hfil {#1}}\)

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Bis{4-chloro-2-[2-(1H-indol-3-yl)ethyl­imino­meth­yl]phenolato-κ2N,O}zinc(II)

aDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
*Correspondence e-mail: seikweng@um.edu.my

(Received 7 January 2008; accepted 21 January 2008; online 25 January 2008)

The Zn atom in the title compound, [Zn(C17H14ClN2O)2], is N,O-chelated by two deprotonated Schiff base monoanionic ligands in a tetra­hedral coordination geometry. The Zn atom lies on a special position of site symmetry 2.

Related literature

For the structure of the unsubstituted [(C17H15N2O)2Zn], see Chen et al. (2007[Chen, J., Xu, X.-Y., Gao, J., Li, Y.-H. & Xu, G.-X. (2007). Chin. J. Struct. Chem. 26, 632-636.]); Ng (2008[Ng, S. W. (2008). Private communication (deposition number: 67380). CCDC, Cambridge, England.]).

[Scheme 1]

Experimental

Crystal data
  • [Zn(C17H14ClN2O)2]

  • Mr = 660.87

  • Monoclinic, C 2/c

  • a = 25.8989 (3) Å

  • b = 5.4960 (1) Å

  • c = 20.6138 (3) Å

  • β = 91.801 (1)°

  • V = 2932.73 (8) Å3

  • Z = 4

  • Mo Kα radiation

  • μ = 1.06 mm−1

  • T = 128 (2) K

  • 0.50 × 0.30 × 0.17 mm

Data collection
  • Bruker APEXII diffractometer

  • Absorption correction: multi-scan (SADABS; Sheldrick, 1996[Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany.]) Tmin = 0.714, Tmax = 0.840

  • 17664 measured reflections

  • 3352 independent reflections

  • 3023 reflections with I > 2σ(I)

  • Rint = 0.025

Refinement
  • R[F2 > 2σ(F2)] = 0.025

  • wR(F2) = 0.100

  • S = 1.21

  • 3352 reflections

  • 251 parameters

  • 14 restraints

  • All H-atom parameters refined

  • Δρmax = 0.55 e Å−3

  • Δρmin = −0.56 e Å−3

Table 1
Selected geometric parameters (Å, °)

Zn1—O1 1.907 (1)
Zn1—N1 2.016 (1)
O1—Zn1—O1i 116.62 (8)
O1—Zn1—N1 95.57 (5)
O1—Zn1—N1i 125.55 (6)
N1—Zn1—N1i 99.56 (8)
Symmetry code: (i) [-x+1, y, -z+{\script{3\over 2}}].

Data collection: APEX2 (Bruker, 2005[Bruker (2005). APEX2 (Version 2.0-2) and SAINT (Version 7.12A). Bruker AXS Inc., Madison, Wisconsin, USA.]); cell refinement: SAINT (Bruker, 2005[Bruker (2005). APEX2 (Version 2.0-2) and SAINT (Version 7.12A). Bruker AXS Inc., Madison, Wisconsin, USA.]); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); molecular graphics: X-SEED (Barbour, 2001[Barbour, L. J. (2001). J. Supramol. Chem. 1, 189-191.]); software used to prepare material for publication: publCIF (Westrip, 2008[Westrip, S. P. (2008). publCIF. In preparation.]).

Supporting information


Comment top

We have recently reported the low-temperature structure of the zinc derivative of the ligand without any substituent, [C17H15N2O)2Zn] (Ng, 2008); the low-temperature structure is identical to the room-temperature structure (Chen et al., 2007). The present compound has a chlorine substituent but this does not lead to significant changes to the bond dimensions of the central metal.

Related literature top

For the structure of the unsubstituted [(C17H15N2O)2Zn], see Chen et al. (2007); Ng (2008).

Experimental top

The Schiff base ligand was synthesized by the reaction of tryptamine (0.32 g, 2 mmol), 5-chlorosalicylaldehyde (0.24 g, 2 mmol) and zinc acetate (0.19 g, 1 mmol) in ethanol. There organic reagents were first heated for an hour. Zinc acetate was then added followed by excess of triethylamine (1 ml). Crystals were obtained by recrystallization from dimethylformamide.

Refinement top

All H atoms were located in a difference Fourier map, and were refined with distance restraints of C–H 1.00 Å and N–H 0.88 Å; their temperature factors were freely refined.

Computing details top

Data collection: APEX2 (Bruker, 2005); cell refinement: SAINT (Bruker, 2005); data reduction: SAINT (Bruker, 2005); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: X-SEED (Barbour, 2001); software used to prepare material for publication: publCIF (Westrip, 2008).

Figures top
[Figure 1] Fig. 1. Thermal ellipsoid plot of Zn(C17H14ClN2O). Displacement ellipsoids are drawn at the 50% probability level, and H atoms are shown as spheres of arbitrary radii.
Bis{4-chloro-2-[2-(1H-indol-3-yl)ethyliminomethyl]phenolato- κ2N,O}zinc(II) top
Crystal data top
[Zn(C17H14ClN2O)2]F(000) = 1360
Mr = 660.87Dx = 1.497 Mg m3
Monoclinic, C2/cMo Kα radiation, λ = 0.71073 Å
Hall symbol: -C 2ycCell parameters from 9956 reflections
a = 25.8989 (3) Åθ = 2.5–31.2°
b = 5.4960 (1) ŵ = 1.06 mm1
c = 20.6138 (3) ÅT = 128 K
β = 91.801 (1)°Block, colorless
V = 2932.73 (8) Å30.50 × 0.30 × 0.17 mm
Z = 4
Data collection top
Bruker APEXII
diffractometer
3352 independent reflections
Radiation source: medium-focus sealed tube3023 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.025
ϕ and ω scansθmax = 27.5°, θmin = 1.6°
Absorption correction: multi-scan
(SADABS; Sheldrick, 1996)
h = 3333
Tmin = 0.714, Tmax = 0.840k = 67
17664 measured reflectionsl = 2626
Refinement top
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.025Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.100All H-atom parameters refined
S = 1.21 w = 1/[σ2(Fo2) + (0.0632P)2 + 1.1156P]
where P = (Fo2 + 2Fc2)/3
3352 reflections(Δ/σ)max = 0.001
251 parametersΔρmax = 0.55 e Å3
14 restraintsΔρmin = 0.56 e Å3
Crystal data top
[Zn(C17H14ClN2O)2]V = 2932.73 (8) Å3
Mr = 660.87Z = 4
Monoclinic, C2/cMo Kα radiation
a = 25.8989 (3) ŵ = 1.06 mm1
b = 5.4960 (1) ÅT = 128 K
c = 20.6138 (3) Å0.50 × 0.30 × 0.17 mm
β = 91.801 (1)°
Data collection top
Bruker APEXII
diffractometer
3352 independent reflections
Absorption correction: multi-scan
(SADABS; Sheldrick, 1996)
3023 reflections with I > 2σ(I)
Tmin = 0.714, Tmax = 0.840Rint = 0.025
17664 measured reflections
Refinement top
R[F2 > 2σ(F2)] = 0.02514 restraints
wR(F2) = 0.100All H-atom parameters refined
S = 1.21Δρmax = 0.55 e Å3
3352 reflectionsΔρmin = 0.56 e Å3
251 parameters
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
Zn10.50000.49480 (5)0.75000.01823 (11)
Cl10.39490 (2)0.33657 (10)0.42675 (2)0.03469 (14)
O10.46240 (5)0.6771 (2)0.68555 (6)0.0256 (3)
N10.53085 (5)0.2579 (3)0.68736 (6)0.0167 (3)
C10.45075 (6)0.5975 (3)0.62688 (7)0.0175 (3)
N20.71557 (6)0.2875 (3)0.76815 (7)0.0235 (3)
C20.41428 (7)0.7308 (3)0.58836 (8)0.0226 (3)
C30.39787 (7)0.6548 (3)0.52766 (8)0.0230 (3)
C40.41765 (7)0.4409 (4)0.50234 (8)0.0216 (3)
C50.45433 (7)0.3096 (3)0.53648 (8)0.0206 (3)
C60.47188 (6)0.3836 (3)0.59882 (7)0.0167 (3)
C70.51092 (6)0.2301 (3)0.63013 (8)0.0181 (3)
C80.56967 (6)0.0809 (3)0.71064 (8)0.0186 (3)
C90.62386 (7)0.1885 (4)0.70984 (11)0.0305 (4)
C100.66211 (7)0.0247 (3)0.74448 (10)0.0233 (4)
C110.68435 (7)0.1805 (3)0.72056 (9)0.0245 (4)
C120.68028 (6)0.0477 (3)0.81090 (9)0.0209 (3)
C130.67219 (7)0.2182 (4)0.86012 (10)0.0296 (4)
C150.69689 (9)0.1852 (4)0.91969 (10)0.0359 (5)
C160.72995 (9)0.0135 (4)0.93160 (11)0.0344 (5)
C170.73904 (7)0.1845 (4)0.88415 (9)0.0279 (4)
C180.71359 (6)0.1517 (3)0.82397 (8)0.0205 (3)
H2N0.7331 (9)0.421 (3)0.7639 (13)0.042 (7)*
H20.3996 (9)0.884 (3)0.6056 (11)0.036 (6)*
H30.3712 (7)0.753 (4)0.5031 (10)0.033 (6)*
H50.4670 (8)0.155 (3)0.5170 (11)0.036 (6)*
H70.5240 (7)0.097 (3)0.6024 (8)0.017 (5)*
H810.5617 (8)0.033 (3)0.7554 (6)0.018 (5)*
H820.5676 (9)0.067 (3)0.6831 (10)0.028 (5)*
H910.6237 (11)0.351 (3)0.7316 (12)0.052 (8)*
H920.6344 (10)0.217 (5)0.6640 (6)0.048 (8)*
H110.6818 (9)0.251 (4)0.6764 (6)0.034 (6)*
H130.6501 (8)0.365 (3)0.8521 (11)0.038 (6)*
H150.6893 (9)0.299 (4)0.9553 (9)0.037 (6)*
H160.7477 (10)0.026 (5)0.9748 (8)0.045 (8)*
H170.7634 (8)0.323 (3)0.8917 (12)0.041 (7)*
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
Zn10.02395 (17)0.01667 (17)0.01391 (15)0.0000.00209 (10)0.000
Cl10.0418 (3)0.0423 (3)0.0191 (2)0.0051 (2)0.01249 (18)0.00457 (18)
O10.0394 (7)0.0195 (6)0.0173 (6)0.0091 (5)0.0061 (5)0.0035 (5)
N10.0163 (6)0.0165 (7)0.0174 (6)0.0011 (5)0.0005 (5)0.0026 (5)
C10.0215 (7)0.0158 (8)0.0153 (7)0.0005 (6)0.0003 (6)0.0006 (6)
N20.0211 (7)0.0231 (8)0.0262 (7)0.0056 (6)0.0016 (6)0.0016 (6)
C20.0264 (9)0.0193 (8)0.0222 (8)0.0065 (7)0.0000 (6)0.0018 (6)
C30.0227 (8)0.0247 (9)0.0212 (8)0.0039 (7)0.0029 (6)0.0072 (7)
C40.0236 (8)0.0268 (8)0.0142 (7)0.0009 (7)0.0026 (6)0.0005 (6)
C50.0231 (8)0.0214 (8)0.0172 (7)0.0029 (6)0.0001 (6)0.0021 (6)
C60.0185 (7)0.0168 (8)0.0148 (7)0.0013 (6)0.0005 (5)0.0007 (6)
C70.0186 (7)0.0173 (8)0.0186 (7)0.0030 (6)0.0006 (6)0.0001 (6)
C80.0183 (7)0.0173 (8)0.0201 (7)0.0020 (6)0.0025 (6)0.0032 (6)
C90.0186 (8)0.0281 (10)0.0444 (11)0.0022 (7)0.0044 (7)0.0164 (9)
C100.0154 (7)0.0226 (9)0.0319 (10)0.0029 (6)0.0015 (7)0.0075 (7)
C110.0206 (8)0.0281 (9)0.0246 (8)0.0026 (7)0.0040 (6)0.0022 (7)
C120.0152 (7)0.0179 (8)0.0298 (9)0.0013 (6)0.0030 (6)0.0036 (7)
C130.0264 (9)0.0199 (9)0.0431 (11)0.0029 (7)0.0094 (8)0.0036 (8)
C150.0408 (11)0.0315 (11)0.0359 (10)0.0118 (9)0.0098 (8)0.0126 (9)
C160.0399 (11)0.0382 (12)0.0249 (10)0.0122 (8)0.0022 (8)0.0001 (8)
C170.0265 (9)0.0293 (10)0.0275 (9)0.0020 (7)0.0043 (7)0.0047 (7)
C180.0179 (7)0.0194 (8)0.0241 (8)0.0010 (6)0.0010 (6)0.0018 (6)
Geometric parameters (Å, º) top
Zn1—O11.907 (1)C7—H70.994 (9)
Zn1—O1i1.907 (1)C8—C91.523 (2)
Zn1—N12.016 (1)C8—H810.989 (9)
Zn1—N1i2.016 (1)C8—H820.994 (10)
Cl1—C41.745 (2)C9—C101.502 (2)
O1—C11.312 (2)C9—H910.998 (10)
N1—C71.282 (2)C9—H921.004 (10)
N1—C81.469 (2)C10—C111.366 (3)
C1—C21.419 (2)C10—C121.439 (3)
C1—C61.427 (2)C11—H110.990 (10)
N2—C181.374 (2)C12—C131.402 (3)
N2—C111.383 (2)C12—C181.415 (2)
N2—H2N0.870 (10)C13—C151.379 (3)
C2—C31.374 (2)C13—H130.998 (10)
C2—H20.994 (10)C15—C161.405 (3)
C3—C41.391 (3)C15—H150.990 (10)
C3—H31.001 (10)C16—C171.382 (3)
C4—C51.370 (2)C16—H160.992 (10)
C5—C61.410 (2)C17—C181.398 (2)
C5—H50.999 (10)C17—H170.996 (10)
C6—C71.453 (2)
O1—Zn1—O1i116.62 (8)N1—C8—H81108.7 (12)
O1—Zn1—N195.57 (5)C9—C8—H81109.5 (12)
O1—Zn1—N1i125.55 (6)N1—C8—H82109.4 (14)
O1i—Zn1—N1125.55 (6)C9—C8—H82110.3 (13)
O1i—Zn1—N1i95.57 (5)H81—C8—H82107.8 (18)
N1—Zn1—N1i99.56 (8)C10—C9—C8110.87 (15)
C1—O1—Zn1124.38 (11)C10—C9—H91109.5 (17)
C7—N1—C8118.25 (14)C8—C9—H91109.0 (16)
C7—N1—Zn1120.68 (11)C10—C9—H92110.3 (16)
C8—N1—Zn1119.96 (10)C8—C9—H92110.3 (15)
O1—C1—C2118.25 (15)H91—C9—H92107 (2)
O1—C1—C6124.63 (15)C11—C10—C12106.68 (16)
C2—C1—C6117.12 (14)C11—C10—C9127.04 (19)
C18—N2—C11109.06 (15)C12—C10—C9126.20 (17)
C18—N2—H2N125.3 (18)C10—C11—N2109.81 (16)
C11—N2—H2N125.7 (18)C10—C11—H11129.7 (14)
C3—C2—C1122.28 (16)N2—C11—H11120.4 (14)
C3—C2—H2118.2 (14)C13—C12—C18118.94 (17)
C1—C2—H2119.6 (14)C13—C12—C10134.06 (17)
C2—C3—C4119.47 (15)C18—C12—C10106.99 (15)
C2—C3—H3119.0 (14)C15—C13—C12118.76 (19)
C4—C3—H3121.5 (14)C15—C13—H13120.0 (14)
C5—C4—C3120.68 (16)C12—C13—H13121.2 (14)
C5—C4—Cl1119.65 (14)C13—C15—C16121.40 (19)
C3—C4—Cl1119.66 (13)C13—C15—H15118.7 (15)
C4—C5—C6120.98 (16)C16—C15—H15119.8 (15)
C4—C5—H5118.2 (14)C17—C16—C15121.4 (2)
C6—C5—H5120.8 (14)C17—C16—H16120.4 (16)
C5—C6—C1119.38 (14)C15—C16—H16118.2 (16)
C5—C6—C7115.93 (14)C16—C17—C18117.02 (18)
C1—C6—C7124.69 (14)C16—C17—H17121.9 (15)
N1—C7—C6126.44 (15)C18—C17—H17121.1 (15)
N1—C7—H7118.8 (12)N2—C18—C17130.10 (17)
C6—C7—H7114.6 (12)N2—C18—C12107.45 (15)
N1—C8—C9111.15 (14)C17—C18—C12122.43 (17)
O1i—Zn1—O1—C1153.77 (15)C1—C6—C7—N12.3 (3)
N1—Zn1—O1—C119.16 (14)C7—N1—C8—C9104.80 (18)
N1i—Zn1—O1—C186.78 (15)Zn1—N1—C8—C987.15 (16)
O1—Zn1—N1—C718.84 (14)N1—C8—C9—C10169.91 (16)
O1i—Zn1—N1—C7147.38 (12)C8—C9—C10—C1179.8 (2)
N1i—Zn1—N1—C7108.67 (14)C8—C9—C10—C1296.6 (2)
O1—Zn1—N1—C8173.41 (12)C12—C10—C11—N20.1 (2)
O1i—Zn1—N1—C844.87 (14)C9—C10—C11—N2177.12 (16)
N1i—Zn1—N1—C859.09 (10)C18—N2—C11—C100.3 (2)
Zn1—O1—C1—C2167.80 (12)C11—C10—C12—C13178.99 (19)
Zn1—O1—C1—C611.6 (2)C9—C10—C12—C134.0 (3)
O1—C1—C2—C3176.76 (17)C11—C10—C12—C180.05 (19)
C6—C1—C2—C32.7 (3)C9—C10—C12—C18176.96 (16)
C1—C2—C3—C40.4 (3)C18—C12—C13—C150.2 (3)
C2—C3—C4—C51.9 (3)C10—C12—C13—C15179.14 (19)
C2—C3—C4—Cl1177.25 (14)C12—C13—C15—C160.4 (3)
C3—C4—C5—C61.8 (3)C13—C15—C16—C170.1 (3)
Cl1—C4—C5—C6177.31 (13)C15—C16—C17—C180.4 (3)
C4—C5—C6—C10.5 (3)C11—N2—C18—C17178.80 (18)
C4—C5—C6—C7179.84 (16)C11—N2—C18—C120.31 (19)
O1—C1—C6—C5176.72 (16)C16—C17—C18—N2178.95 (18)
C2—C1—C6—C52.7 (2)C16—C17—C18—C120.7 (3)
O1—C1—C6—C72.9 (3)C13—C12—C18—N2178.99 (16)
C2—C1—C6—C7177.69 (15)C10—C12—C18—N20.22 (19)
C8—N1—C7—C6179.43 (15)C13—C12—C18—C170.4 (3)
Zn1—N1—C7—C611.5 (2)C10—C12—C18—C17178.85 (16)
C5—C6—C7—N1177.31 (16)
Symmetry code: (i) x+1, y, z+3/2.

Experimental details

Crystal data
Chemical formula[Zn(C17H14ClN2O)2]
Mr660.87
Crystal system, space groupMonoclinic, C2/c
Temperature (K)128
a, b, c (Å)25.8989 (3), 5.4960 (1), 20.6138 (3)
β (°) 91.801 (1)
V3)2932.73 (8)
Z4
Radiation typeMo Kα
µ (mm1)1.06
Crystal size (mm)0.50 × 0.30 × 0.17
Data collection
DiffractometerBruker APEXII
diffractometer
Absorption correctionMulti-scan
(SADABS; Sheldrick, 1996)
Tmin, Tmax0.714, 0.840
No. of measured, independent and
observed [I > 2σ(I)] reflections
17664, 3352, 3023
Rint0.025
(sin θ/λ)max1)0.649
Refinement
R[F2 > 2σ(F2)], wR(F2), S 0.025, 0.100, 1.21
No. of reflections3352
No. of parameters251
No. of restraints14
H-atom treatmentAll H-atom parameters refined
Δρmax, Δρmin (e Å3)0.55, 0.56

Computer programs: APEX2 (Bruker, 2005), SAINT (Bruker, 2005), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), X-SEED (Barbour, 2001), publCIF (Westrip, 2008).

Selected geometric parameters (Å, º) top
Zn1—O11.907 (1)Zn1—N12.016 (1)
O1—Zn1—O1i116.62 (8)O1—Zn1—N1i125.55 (6)
O1—Zn1—N195.57 (5)N1—Zn1—N1i99.56 (8)
Symmetry code: (i) x+1, y, z+3/2.
 

Acknowledgements

The authors thank the University of Canterbury, New Zealand, for the diffraction measurements, and the Science Fund (12–02-03–2031) for supporting this study.

References

First citationBarbour, L. J. (2001). J. Supramol. Chem. 1, 189–191.  CrossRef CAS Google Scholar
First citationBruker (2005). APEX2 (Version 2.0-2) and SAINT (Version 7.12A). Bruker AXS Inc., Madison, Wisconsin, USA.  Google Scholar
First citationChen, J., Xu, X.-Y., Gao, J., Li, Y.-H. & Xu, G.-X. (2007). Chin. J. Struct. Chem. 26, 632–636.  CAS Google Scholar
First citationNg, S. W. (2008). Private communication (deposition number: 67380). CCDC, Cambridge, England.  Google Scholar
First citationSheldrick, G. M. (1996). SADABS. University of Göttingen, Germany.  Google Scholar
First citationSheldrick, G. M. (2008). Acta Cryst. A64, 112–122.  Web of Science CrossRef CAS IUCr Journals Google Scholar
First citationWestrip, S. P. (2008). publCIF. In preparation.  Google Scholar

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