Synthesis and Structure of Organyltriphenylphosphonium and Stibonium Hexabromoplatinates

• Published in: Russian journal of general chemistry Vol. 90; no. 8; pp. 1483 - 1488
• Main Authors: Zykova, A. R., Sharutin, V. V., Sharutina, O. K., Senchurin, V. S.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-08-2020; Springer Nature B.V
• Subjects: Acetonitrile; Antimony; Bromides; Chemical synthesis; Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Coordination; Dimethyl sulfoxide; Recrystallization; Sulfoxides; tetraphenylstibonium bromide; benzyltriphenylphosphonium bromide; potassium hexabromoplatinate; ethyltriphenylphosphonium bromide
• ISSN: 1070-3632; 1608-3350
• DOI: 10.1134/S1070363220080150

Organyltriphenylphosphonium and -stibonium hexabromoplatinates were synthesized by the reaction of potassium hexabromoplatinate with organyltriphenylphosphonium and -stibonium bromides in acetonitrile or water. The complexes [Ph
3
PC
2
H
5
]
2
[PtBr
6
] and [Ph
3
PCH
2
Ph]
2
[PtBr
6
] were obtained by recrystallization from dimethyl sulfoxide; the complexes [Ph
3
PCH
2
Ph][PtBr
5
(Et
2
SO-S)] and [Ph
4
Sb·Et
2
SO-O]
2
[PtBr
6
], by recrystallization of benzyltriphenylphosphonium and tetraphenylstibonium hexabromoplatinates from diethyl sulfoxide. According to the X-ray data, phosphorus atoms in cations have a distorted tetrahedral coordination and antimony atoms, a distorted trigonal-bipyramidal coordination due caused by the Sb···O=SEt
2
interaction.