1264669-85-3Relevant academic research and scientific papers
Unprecedented coordination of dithiocarbimate in multinuclear and heteroleptic complexes
Singh, Bandana,Drew, Michael G.B.,Kociok-Kohn, Gabriele,Molloy, Kieran C.,Singh, Nanhai
, p. 623 - 631 (2011)
An uncommon coordination protocol induced by the p-tolylsulfonyl dithiocarbimate ligand (L) [L = p-CH3C6H 4SO2NCS22-] in conjunction with PPh3 allowed the formation of novel homodimetallic, Cu 2(PPh3)4L (1), trinuclear heterometallic Cu2Ni(L)2(PPh3)4 (2) and heteroleptic complexes of general formula cis-[M(PPh3)2L] [M = Pd(ii) (3), Pt(ii) (4)]. The complexes have been characterized by microanalysis, mass spectrometry, IR, 1H, 13C and 31P NMR and electronic absorption spectra and single-crystal X-ray crystallography. 2 uniquely consists of square planar, trigonal planar and tetrahedral coordination spheres within the same molecule. In both heteroleptic complexes 3 and 4 the orientation of aromatic protons of PPh3 ligand towards the Pd(ii) and Pt(ii) center reveals C-H...Pd and C-H...Pt rare intramolecular anagostic or preagostic interactions. These complexes exhibit photoluminescent properties in solution at room temperature arising mainly from intraligand charge transfer (ILCT) transitions. The assignment of electronic absorption bands has been corroborated by time dependent density functional theory (TD-DFT) calculations. Complexes 1 and 2 with σrt values ～ 10-6 S cm-1 show semi-conductor properties in the temperature range 313-403 K whereas 3 and 4 exhibit insulating behaviour.
