The first crystallographically-characterised Cu(II) xanthate
Abstract The copper(II) xanthate Cu(S2COEt)2·TMEDA (1) (TMEDA = N,N-tetramethylethylenediamine) has been synthesised and is the first structurally-characterised xanthate of copper in the + 2 oxidation state. 1 has an octahedral cis, cis, cis-ligand arrangement about the metal, in which xanthate chelation is markedly asymmetric. Both bulk thermal decomposition and film growth by aerosol-assisted chemical vapour deposition (AACVD) using 1 as precursor lead to the formation of Cu2S.
Synthesis and coordination chemistry of fluorinated xanthate ligands
Abstract Alkali metal, copper, nickel and rhodium complexes of alkylated [S2COC8H17] and fluoroalkylated xanthate ligands [S2COCmH2mCnF2n+1] (m = 2, n = 4, 6; m = 3, n = 1, 8) have been prepared in high yields and characterised by elemental analysis, mass spectrometry, IR and NMR spectroscopies. The structures of [Cu(S2COC8H17)(PPh3)2], [Cu(S2COC3H6CF3)(PPh3)2], [Ni(S2COC3H6CF3)2], [Cp*RhCl(S2COC8H17)] and [Cp*RhCl(S2COC3H6CF3)] have been determined by single crystal X-ray diffraction.
SYNTHESIS AND CHARACTERIZATION OF TWO 2-AMINO-5-ALKYL-1,3,4-THIADIAZOLYL CARBAMATE LIGANDS AND THEIR Co(II), Ni(II), AND Zn(II) COMPLEXES
ABSTRACT Two novel monodentate carbamate ligands derived from 2-amino-5-methyl-1,3,4-thiadiazole and 2-amino-5-ethyl-1,3,4-thiadiazole, have been prepared. The metal complexes of the ligands were prepared with the chlorides of Co(II), Ni(II) and Zn(II) in methanol as solvent. The ligands and their metal complexes have been characterized by elemental analyses, IR, 13C and 1H NMR spectra, and magnetic susceptibility measurements. All of the complexes are mononuclear. Thermal properties of the ligands and their complexes have been studied by thermogravimetric analyses (TGA) and differential scanning calorimetry (DSC).