1,2-Bis(diphenylphosphino)ethane nickel(ii) O,O′-dialkyldithiophosphates as potential precursors for nickel sulfides

Reena Yadav, Ashish Kumar Singh, Yogesh Waghadkar, Gabriele Kociok-Kohn, Abhinav Kumar, Ratna Chauhan, Sunit Rane, Suresh Gosavi

Research output: Contribution to journalArticlepeer-review

16 Citations (SciVal)


In this work, three heteroleptic Ni(ii)dppe dithiophosphate complexes, [Ni{S2P(OC2H5)2}(dppe)]B(C6H5)4 (1), [Ni{S2P(OCH(CH3)2)2}(dppe)]PF6 (2) and [Ni{S2P(OCH(CH3)2)2}(dppe)]B(C6H5)4 (3) (dppe=1,2-bis(diphenylphosphino)ethane), have been synthesized and characterized by analytical and spectroscopic techniques (microanalysis, IR, UV-Vis,1H,13C and31P NMR spectroscopy) as well as single crystal X-ray crystallography. The crystal structures of all complexes displayed a distorted square planar geometry around the Ni(ii) center bonded through two sulfur atoms of the dithiophosphate ligand and two phosphorus atoms of dppe. The TGA results indicated that all three compounds display loss of solvents at the outset and decompose to Ni-S phase systems and hence may act as potential precursors for nickel sulfides. Investigations indicated that the bulkiness of counteranions as well as the alkyl fragment of the dithiophosphate ligands do not have any effect on the morphologies of as-synthesized nickel sulfides.

Original languageEnglish
Pages (from-to)1327-1333
Number of pages7
JournalNew Journal of Chemistry
Issue number3
Publication statusPublished - 7 Feb 2017


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