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Issue 30, 2015
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Noncovalent interactions determine the conformation of aurophilic complexes with 2-mercapto-4-methyl-5-thiazoleacetic acid ligands

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Abstract

We report the synthesis of three gold(I) complexes [Au(H2-mmta)2]Cl·3H2O (1), Na3[Au(mmta)2]·6H2O (2) and Na3[Au(mmta)2]·10.5H2O (3) (H2-mmta = 2-mercapto-4-methyl-5-thiazoleacetic acid) in which the Au(I) centre is incorporated either in cationic or anionic units of the [Au(SR)2]+/− type depending on the protonation state of the ligand. All structures were characterized by single crystal X-ray analysis and found to exhibit unsupported aurophilic interactions leading to the formation of dimeric [Au2(H2-mmta)4]2+ and [Au2(mmta)4]6− species. By applying several ab initio interpretative techniques we examine the character of the intermolecular interactions stabilizing the eclipsed arrangement of the aurophilic dimers formed in 1–3.

Graphical abstract: Noncovalent interactions determine the conformation of aurophilic complexes with 2-mercapto-4-methyl-5-thiazoleacetic acid ligands

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Submitted
30 Apr 2015
Accepted
22 Jun 2015
First published
22 Jun 2015

Dalton Trans., 2015,44, 13641-13650
Article type
Paper

Noncovalent interactions determine the conformation of aurophilic complexes with 2-mercapto-4-methyl-5-thiazoleacetic acid ligands

M. Hapka, M. Dranka, K. Orłowska, G. Chałasiński, M. M. Szczęśniak and J. Zachara, Dalton Trans., 2015, 44, 13641
DOI: 10.1039/C5DT01627D

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