Synthesis, Characterization, and X-Ray Crystal Structure of Bis(O-amyl dithiocarbonato-κ2S,S′)bis(4-cyanopyridine-κN)nickel(II)

Kuldeep Singh,Rajni Kant,Sanjay Kapoor,Renu Sachar,Vivek K Gupta

doi:10.1155/2014/748425

Abstract

The [Ni(S2CO-n-C5H11)2(C6H4N2)2] adduct of 4-cyanopyridine with [Ni(S2CO-n-C5H11)2] was synthesized and characterized by elemental analysis, magnetic susceptibility measurement, IR, electronic spectral data, and X-ray diffraction analysis. The Ni atom in the title complex is octahedrally coordinated within a trans-N2S4 donor set, with the Ni atom located on a centre of inversion. The title compound exhibits magnetic moment value (3.20 B.M) which is in agreement with magnetic moment values observed for paramagnetic octahedral complexes of nickel(II). The title complex crystallizes in the orthorhombic space group Pbca with unit cell parameters a = 11.455(5), b = 9.602(4), and c = 26.374(1) Å. Crystal structure was solved by direct methods and refined by full matrix least-squares procedures to a final R value of 0.0499 for 2004 observed reflections. The amyl chain is disordered over two sets of sites, with occupancy ratios of 0.595 : 0.405. Infinite long chains of molecules are formed with the help of C–H⋯N hydrogen bond.

Highlights

The coordination compounds in which the dithio ligands form a ring with the metal ion have been reported for a great number of metal ions and display interesting and often quite novel properties and structures
Transition metal xanthate complexes have been investigated for nonlinear optical applications [14]
Amyldithiocarbonato)nickel(II) known as parent compound was first prepared by adding an aqueous solution of potassium salt of O-amyldithiocarbonate (4.0 g, 0.02 mol) to an aqueous solution of NiCl2⋅6H2O (2.37 g, 0.01 mol) with stirring

Summary

Introduction

The coordination compounds in which the dithio ligands form a ring with the metal ion have been reported for a great number of metal ions and display interesting and often quite novel properties and structures. Xanthates are formed by the reaction between a metal alkoxide and carbon disulphide. Xanthates have ability to bind to various metals [3] and form chelates with virtually all transition elements. They have been proved to be versatile chelating agents for the separation and extraction of metals in analytical chemistry and mineral floating [4, 5]. Metal xanthate complexes and their reaction products with a variety of Lewis bases have been extensively studied [8,9,10]. Transition metal xanthate complexes have been investigated for nonlinear optical applications [14]

Methods

Results

Conclusion