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Synthesis and Characterization of Bromo- and Bromochloroplumbates(II).

Crystal Structures of [Ph

4

E]

2

[Pb

3

Br

8

] (E = P, As) and [Ph

4

P][PbBrCl

2

] · CH

3

CN

Thomas M. Klap¨otke, Burkhard Krumm, Kurt Polborn, and Claudia M. Rien¨acker

Department Chemie, Ludwig-Maximilians-Universit¨at M¨unchen,

Butenandtstr. 5-13 (D), D-81377 M¨unchen, Germany

Reprint requests to Prof. Dr. T. M. Klap¨otke. Fax: (+49) 89 2180-7492.

E-mail: tmk@cup.uni-muenchen.de

Z. Naturforsch.55 b,377–382 (2000); received January 18, 2000

Tetraphenylphosphonium(arsonium) Octabromotriplumbate, Tetraphenylphosphonium Bro- modichloroplumbate, Quantum Chemical Calculations

[Ph4P]2[Pb3Br8] and [Ph4As]2[Pb3Br8] crystallize both in the monoclinic space group P 21/n.

The lattice parameters of [Ph4P]2[Pb3Br8] are a = 14.637(7), b = 8.151(3), c = 23.388(8) ˚A,= 106.02(3), Z = 2 and of [Ph4As]2[Pb3Br8] are a = 14.697(7), b = 8.219(3), c = 23.527(8) ˚A,

= 106.27(3), Z = 2. The lattice parameters of [Ph4P][PbBrCl2]CH3CN, which crystallizes in the triclinic space group (P ¯1), are a = 9.435(3), b = 10.2577(14), c = 14.055(2) ˚A, = 88.320(11),= 84.82(2),= 84.19(2), Z = 2.207Pb NMR shifts of halogenoplumbates in solution are reported.

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