Electron paramagnetic resonance study of the reactions of tetrathiomolybdate with roussin salts and esters, and with some related iron nitrosyls

Anthony R. Butler, Christopher Glidewell*, Ian L. Johnson, John C. Walton

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The tetrathiomolybdate ion [MoS4]2- reacts in DMF solution with Roussin esters Fe2(SR)2(NO)4 (R = Me, Et, n-Pr, i-Pr, n-Bu,t-Bu, n-C5H11) to yield the paramagnetic iron nitrosyls [Fe(NO)2(SR)2]- (1), [Fe(NO)2(S2MoS2]- (2) and [Fe(NO)(S2MOS2)2]- (3). The new complexes (2) and (3) have been characterized by EPR spectroscopy and the assignment to them of constitutions based respectively upon tetrahedral and square pyramidal iron is supported by EHMO calculations. Fe2(SPh)2(NO)4 with [MoS4]2- yields only [Fe(NO)2(SPh)2]-, and preformed (3) reacts with PhS- to give firstly EPR-silent species, and then [Fe(NO)2(SPh)2]-. The mononitrosyl (3) can also be formed by reaction of [MoS4]2- with [Fe4S3(NO)7]-, Fe4S4(NO)4, or Fe2I2(NO)4.

Original languageEnglish
Pages (from-to)2085-2090
Number of pages6
JournalPolyhedron
Volume6
Issue number12
DOIs
Publication statusPublished - 1 Jan 1987

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