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- W1973403727 abstract "Abstract Triphenyltelluronium hexachloroplatinate ( 1 ), hexachloroiridate ( 2 ), tetrachloroaurate ( 3 ), and tetrachloroplatinate ( 4 ) were prepared from Ph 3 TeCl and potassium salts of the corresponding anions. Upon recrystallization of 4 from concentrated nitric acid, K 2 [PtCl 6 ] and (Ph 3 Te)(NO 3 )·HNO 3 ( 5 ) were obtained. The crystal structures of 1 – 3 and 5 are reported. Compounds 1 and 2 are isostructural. They are triclinic, P 1, Z =2 (the asymmetric unit contains two formula units). Compound 1 : a =10.7535(2), b =17.2060(1), c =21.4700(3) A, α =78.9731(7), β =77.8650(4), γ =78.8369(4)°. Compound 2 : a =10.7484(2), b =17.1955(2), c =21.4744(2) A, α =78.834(1), β =77.649(1), γ =78.781(1)°. Compound 3 is monoclinic, P 2 1 / c , Z =4, a =8.432(2), b =14.037(3), c =17.306(3) A, β =93.70(3)°. Compound 5 is monoclinic. P 2 1 / n , Z =4, a =9.572(2), b =14.050(3), c =13.556(3) A, β =90.76(3)°. The primary bonding in the Ph 3 Te + cation in each salt is a trigonal AX 3 E pyramid with TeC bond lengths in the range 2.095(8)–2.14(2) A and the bond angles 94.1(6)–100.9(5)°. The weak Te⋯Cl ( 1 – 3 ) and Te⋯O ( 5 ) secondary interactions expand the coordination sphere. In 1 and 2 the cation shows a trigonal bipyramidal AX 3 YE coordination with one primary TeC bond and the shortest secondary Te⋯Cl contact in axial positions and the two other TeC bonds and the lone-pair in equatorial positions. The cation in 3 shows a distorted octahedral AX 3 Y 3 E environment and that in 5 is a more complex AX 3 Y 3 Y′ 2 arrangement. In both latter salts the structure is a complicated three-dimensional network of cations and anions." @default.
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- W1973403727 date "2001-12-01" @default.
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- W1973403727 title "Cation–anion interactions in triphenyl telluronium salts. The crystal structures of (Ph3Te)2[MCl6] (M=Pt, Ir), (Ph3Te)[AuCl4], and (Ph3Te)(NO3)·HNO3" @default.
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- W1973403727 doi "https://doi.org/10.1016/s0022-328x(01)01182-2" @default.
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