Crystal structures of fourteen halochalcogenylphos-pho-nium tetra-halogenidoaurates(III).
Acta Crystallogr E Crystallogr Commun
; 80(Pt 5): 506-521, 2024 Apr 01.
Article
em En
| MEDLINE
| ID: mdl-38721423
ABSTRACT
The structures of fourteen halochalcogenyl-phospho-nium tetra-halogen-ido-aurates(III), phosphane chalcogenide derivatives with general formula [R 1 3- nR 2 nPEX][AuX 4] (R 1 = t-butyl; R 2 = isopropyl; n = 0 to 3; E = S or Se; X = Cl or Br) are presented. The eight possible chlorido derivatives are 17 a, n = 3, E = S; 18 a, n = 2, E = S; 19 a, n = 1, E = S; 20 a, n = 0, E = S; 21 a, n = 3, E = Se; 22 a, n = 2, E = Se; 23 a, n = 1, E = Se; and 24 a, n = 0, E = Se, and the corresponding bromido derivatives are 17 b-24 b in the same order. Structures were obtained for all compounds except for the tri-t-butyl derivatives 24 a and 24 b. Isotypy is observed for 18 a/18 b/22 a/22 b, 19 a/23 a, 17 b/21 b and 19 b/23 b. In eleven of the compounds, Xâ¯X contacts (mostly very short) are observed between the cation and anion, whereby the E-Xâ¯X groups are approximately linear and the Xâ¯X-Au angles approximately 90°. The exceptions are 17 a, 19 a and 23 a, which instead display short Eâ¯X contacts. Bond lengths in the cations correspond to single bonds P-E and E-X. For each group with constant E and X, the P-E-X bond-angle values increase monotonically with the steric bulk of the alkyl groups. The packing is analysed in terms of Eâ¯X, Xâ¯X (some between anions alone), Hâ¯X and Hâ¯Au contacts. Even for isotypic compounds, some significant differences can be discerned.
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MEDLINE
Idioma:
En
Revista:
Acta Crystallogr E Crystallogr Commun
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Alemanha
País de publicação:
ENGLAND
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ESCOCIA
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GB
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GREAT BRITAIN
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INGLATERRA
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REINO UNIDO
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SCOTLAND
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UK
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UNITED KINGDOM