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Inorganic Chemistry Frontiers Vol - 4 Issue - 1

Inorganic Chemistry Frontiers Vol -3

Inorganic Chemistry Frontiers Vol -2

Inorganic Chemistry Frontiers Vol -1

Gold and nickel alkyl substituted bis-thiophenedithiolene complexes: anionic and neutral forms

Content Provider	Royal Society of Chemistry (RSC)
Author	Belo, Dulce Silva, Rafaela A. L. Santos, Isabel C. Pereira, Laura C. J. Lopes, Elsa B. Almeida, Manuel Andrade, Marta M. Rovira, Concepció Coutinho, Joana T. Rabaça, Sandra Telo, João P.
Copyright Year	2017
Abstract	The Au and Ni monoanionic complexes of tert-butyl and diisopropyl substituted thiophenedithiolate ligands, [M(α-tb-tpdt)2] and [M(α-dp-tpdt)2], were synthesized and characterized namely by single crystal X-ray diffraction and magnetic susceptibility measurements. These complexes, prepared in a first step as monoanionic species, are easier to oxidize than the related non-substituted thiophenedithiolates and could be obtained also as stable neutral species. As expected, the peripheral alkyl groups in the ligands also confer a high solubility to the complexes in common organic solvents. The neutral gold complex [Au(α-tb-tpdt)2] presents a significant ligand asymmetry indicative of unpaired electron localization in one ligand at variance with [Au(α-dp-tpdt)2] that is within experimental uncertainty fully symmetric illustrating the role of intermolecular interactions in the stabilization of SOMO⋯SOMO interactions. While in [Au(α-tb-tpdt)2] a significant intermolecular interaction between paramagnetic molecules is possible leading to diamagnetic dimers of molecules, in [Au(α-dp-tpdt)2] the bulkier substituents prevent the intermolecular interactions, leading to a regular stacking of molecules in symmetrical configuration. The regular stacks of paramagnetic [Au(α-dp-tpdt)2] units behave, at high temperatures, as antiferromagnetic chains undergoing an AFM transition at ca. 25 K.
Starting Page	270
Ending Page	280
Page Count	11
File Format	HTM / HTML PDF
ISSN	20521553
Volume Number	4
Issue Number	2
Journal	Inorganic Chemistry Frontiers
DOI	10.1039/c6qi00447d
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	SOMO Butyl group X-ray crystallography Magnetic susceptibility Alkyl Ligand Variance Paramagnetism Diamagnetism Antiferromagnetism
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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