731004-59-4Relevant academic research and scientific papers
Synthesis, Spectral, Valence-Bond Parameters, and Single Crystal X-ray Structural Studies on [Ni(dnpdtc)(PPh3)(NCS)] and [Ni(dnpdtc)(PPh3)(CN)]
Arul Prakasam,Ramalingam,Bocelli,Olla
, p. 301 - 304 (2004)
Two new nickel complexes withplanar surrounding of Ni [Ni(dnpdtc)(PPh 3)(NCS)] (1) and [Ni(dnpdtc)(PPh3)(CN)] (2) (dnpdtc=N,N-dipropyldithiocarbamate) were prepared from the parent dithiocarbamate and were characterized by elemental analysis, electronic, IR and NMR spectra. The structures of both the complexes were determined by single crystal X-ray crystallography. Thioureide stretching vibrations occur at 1528 cm-1 and 1521 cm-1 for 1 and 2 respectively. Large 31P chemical shifts were observed for the two compounds. A significant asymmetry in Ni-S bond distances was observed in compound 1 [2.1700(16) and 2.2251 (17)A] whereas in compound 2 the bond distances were almost similar [2.2100(14) and 2.2122(13)A]. A marginal difference was observed with respect to the thioureide bond distances [1.340(6)A for 1 and 1.312(5)A for 2]. The observation clearly supports the less effective trans influence of SCN- over PPh3. However, PPh3 and CN- show almost similar trans influence.
