Synthesis, Crystal Structures and Spectra Properties of Two New Cu(II) Complexes Containing Thiocyanato Anions as Ancillary Ligand

Abstract

As the result of different ratio of reactants, two novel mixed-ligand complexes with different structures have been synthesised and characterised by IR and electronic spectra. In [Cu(L)(NCS)] 2 •0.5H 2 O, (L = N,N-dimethyl-N ' -(pyrid-2-ylmethyl)ethylenediamine), there are two crystallographically independent mononuclear units which are enantiomers. The thiocyanato anions act as terminal ligands. In [Cu 2 (L) 2 (μ 2 -NCS) 2 ] 2 (ClO 4 ) 2 , two thiocyanato anions bridge two Cu(II) ions in the end-to-end mode.