Chemistry and Physics Faculty Articles

Title

Resonance Induced Properties in Monothiocarbamates Derived from Aromatic Amines: Comparison of the Coordination Chemistry of Indole and Indoline Monothiocarbamates

Document Type

Article

Publication Date

1983

Publication Title

Polyhedron

ISSN

0277-5387

Volume

2

Issue/No.

1

First Page

25

Last Page

30

Peer Reviewed

1

Abstract

The syntheses of two new monothiocarbamate ligands and selected transition element complexes of each are reported. The complexes of indoline-N-carbothioate (intc) prepared are: NiL2·1.5H2O, ZnL2, NiL2·2py, ZnL2·2py. The complexes of indole N-carbothioate (iltc) are: NiL′2, ZnL′2, Cul′. IR spectral results support a bidentate ligand behavior for both new monothiocarbamates except in ZnL2·2py. Comparison of the IR spectral features of bis(indolylcarbamoyl)-disulfide with that of coordinated indole-N-carbothioate allowed an assignment of the C-S and C-O vibrational frequencies. Evidence for differences in major resonance contributions to the electronic structures of each new ligand are presented. The crystal structure of thebis(indolylcarbamoyl)disulphide is also presented and a comparison is made to pyrrole-N-carbothioate, another aromatic amine monothiocarbamate. The disulphide crystallizes in the centrosymmetric monoclinic space group P21/c with a = 15.64(4)Å, b = 5.228(1)Å,c = 19.271(7)Å, β = 97.20(2)°, V = 1564(1)Å3, d(obsd)(calcd) = (1.50)(1.52) for a molecular weight = 356.1 and Z = 4. Diffraction data were collected with a Syntex Pdiffractiometer with CuKα radiation. Least squares refinement resulted in Rf = 7.0% for all 1213 non zero reflections have (I)> 3σ(I).

Comments

This paper is number 23 in the series, Coordination Chemistry of New Sulphur Containing Ligands, Paper Number 22. R. D. Bereman, D. M. Baird, J. R. Dorfman and J. Bordner, Inorg. Chem. 1982, 21, 2365.

Additional Comments

Copyright © 1983 Published by Elsevier Ltd.

DOI

10.1016/S0277-5387(00)88027-4

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