L. Govindasamy, V. Rajakannan, D. Velmurugan, S. Shanmuga Sundara Raj, T. M. Rajendran, R. Venkatesan, R. Srinivasan, H. K. Fun: Crystal Structure of Dimeric Cu(II) Complex {µ,µ’-acetato O,O bis [N-salicylidene-2-amino-pyridine-methanolato N,N,O]} : perchlorate

Crystal Research and Technology

Cryst. Res. Technol. 37 (2002) 1018 - Abstract -

L. Govindasamy, V. Rajakannan, D. Velmurugan, S. Shanmuga Sundara Raj*, T. M. Rajendran**, R. Venkatesan**, R. Srinivasan**, H. K. Fun*

Department of Crystallography and Biophysics University of Madras, Guindy Campus, Chennai - 600 025, India
*Department of Physics, Universiti Sains Malaysia, Malaysia
**Department of Chemistry, Pondicherry University, Pondicherry, India

Crystal Structure of Dimeric Cu(II) Complex {µ,µ’-acetato O,O bis [N-salicylidene-2-amino-pyridine-methanolato N,N,O]} : perchlorate

The crystal structure of the title complex has been solved using X-ray diffraction data. The compound crystallizes from aqueous ethanol solvent in the triclinic system, space group P-1, with unit cell parameters: a = 8.9532(1), b = 12.7423(3), c = 14.9012(3)Å, α = 73.767(1), β = 75.322(1), γ = 77.496(1)°, Z = 2, V = 1559.4(5) Å³. The trial structure was determined by automated Patterson methods and subsequent difference Fourier techniques using DIRDIF98 and refined to a final R-factor of 0.064. The copper ion Cu1 adopts a (4+1) square-pyramidal geometry defined by the tridentate N-salicylidimine dianions and the neutral monodentate pyridine ligand in the basal plane. The apical position is occupied by a solvent methanol molecule at a distance of 2.341(4) Å. The copper Cu2 adopts a square-planar geometry.

Keywords: metalloenzymes, radiopharmaceuticals, square-pyramidal, salicylidimine, half-boat conformation and intramolecular hydrogen bonds

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