{4,4′,6,6′-Tetra­iodo-2,2′-[2,2-dimethyl­propane-1,3-diylbis(nitrilo­methanylyl­idene)]diphenolato}copper(II)

Kargar, H.; Kia, R.; Shakarami, T.; Tahir, M.N.

doi:10.1107/S1600536812020387

Volume 68
Part 6
Page m752
June 2012

Received 28 April 2012
Accepted 6 May 2012
Online 12 May 2012

Key indicators
Single-crystal X-ray study
T = 296 K
Mean (C-C) = 0.006 Å
R = 0.026
wR = 0.059
Data-to-parameter ratio = 18.0
Details

{4,4',6,6'-Tetraiodo-2,2'-[2,2-dimethylpropane-1,3-diylbis(nitrilomethanylylidene)]diphenolato}copper(II)

Hadi Kargar,^a ^* Reza Kia,^b ⁺ Tayebeh Shakarami ^a and Muhammad Nawaz Tahir ^c ^*

^aDepartment of Chemistry, Payame Noor University, PO Box 19395-3697 Tehran, I. R. IRAN,^bDepartment of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran, and ^cDepartment of Physics, University of Sargodha, Punjab, Pakistan
Correspondence e-mail: h.kargar@pnu.ac.ir, dmntahir_uos@yahoo.com

In the title compound, [Cu(C₁₉H₁₆I₄N₂O₂)], the Cu^II atom and the substituted C atom of the diamine segment lie on a crystallographic twofold rotation axis. The geometry around the Cu^II atom is distorted square-planar, which is supported by the N₂O₂ donor atoms of the coordinated Schiff base. The dihedral angle between the symmetry-related substituted benzene rings is 29.40 (19)°. In the crystal, a short II [3.8766 (6) Å] contact is present and links neighbouring molecules into chains propagating along the a axis.

Related literature

For applications of Schiff base ligands in coordination chemistry, see: Granovski et al. (1993); Blower (1998). For a related structure, see: Kargar et al. (2012). For standard values of bond lengths, see: Allen et al. (1987). For van der Waals radii, see: Bondi (1964).

Experimental

Crystal data

[Cu(C₁₉H₁₆I₄N₂O₂)]
M_r = 875.48
Orthorhombic, P b c n
a = 16.9336 (10) Å
b = 15.9602 (12) Å
c = 8.7041 (5) Å
V = 2352.4 (3) Å³
Z = 4
Mo K radiation
= 6.20 mm^-1
T = 296 K
0.21 × 0.12 × 0.08 mm

Data collection

Bruker SMART APEXII CCD area-detector diffractometer
Absorption correction: multi-scan (SADABS; Bruker, 2005) T_min = 0.269, T_max = 0.551
9807 measured reflections
2321 independent reflections
1791 reflections with I > 2(I)
R_int = 0.030

Refinement

R[F² > 2(F²)] = 0.026
wR(F²) = 0.059
S = 1.04
2321 reflections
129 parameters
H-atom parameters constrained
_max = 0.94 e Å^-3
_min = -0.67 e Å^-3

Data collection: APEX2 (Bruker, 2005); cell refinement: SAINT (Bruker, 2005); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009).

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: SU2420 ).

Acknowledgements

HK and TS thank PNU for financial support. MNT thanks GC University of Sargodha, Pakistan for the research facility.

References

Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans. 2, pp. S1-19.
Blower, P. J. (1998). Transition Met. Chem., 23, 109-112.
Bondi, A. (1964). J. Phys. Chem. 68, 441-452.
Bruker (2005). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.
Granovski, A. D., Nivorozhkin, A. L. & Minkin, V. I. (1993). Coord. Chem. Rev. 126, 1-69.
Kargar, H., Kia, R., Shakarami, T. & Tahir, M. N. (2012). Acta Cryst. E68, o564.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Spek, A. L. (2009). Acta Cryst. D65, 148-155.

metal-organic compounds