Synthetic route to vanadium(III) dichalcogenidophosphinate complexes, V(S2PPh2)3 and V(Se2PPh2)3: A spectroscopic and structural comparative study with analogous complexes of chromium(III), Cr(E2PPh2)3 (E=S, Se)

Christine A. Phipps, Joanna M. Rosenberger, McKenzie M. Miller, Sean R. Parkin, Jessie L. Brown

Research output: Contribution to journalArticlepeer-review

Abstract

Addition of the potassium dichalcogenidodiphenylphosphinate salts, KE2PPh2 (E=S, Se), to either the THF solvate of vanadium(III) chloride or unsolvated chromium(III) chloride results in rapid ligand substitution and the formation of a series of closely-related trivalent, neutral mononuclear complexes, M(E2PPh2)3 (M=V, Cr; E=S, Se), isolated in modest to good yield. The metal dichalcogenidophosphinate complexes reported herein were characterized by IR, UV-vis, and 1H NMR spectroscopies, and their solid-state molecular structures were determined by single-crystal X-ray crystallography. Importantly, the comparative analysis includes the structural and spectroscopic studies of two rare V(III) dithio- and diseleno-phosphinate VE6 cores, as well as, two previously known CrE6 analogues. In the solid-state the title complexes exhibit trigonal distortion from octahedral with torsion angles ranging from 43(2) to 50.3(6)° and structural parameters consistent with ligation of progressively ‘softer’ chalcogen-donors.

Original languageEnglish
Pages (from-to)1182-1192
Number of pages11
JournalZeitschrift fur Anorganische und Allgemeine Chemie
Volume647
Issue number11
DOIs
StatePublished - Jun 11 2021

Bibliographical note

Publisher Copyright:
© 2020 Wiley-VCH GmbH

Keywords

  • chromium(III)
  • diphenyldiselenophosphinate complexes
  • diphenyldithiophosphinate complexes
  • vanadium(III)

ASJC Scopus subject areas

  • Inorganic Chemistry

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