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The metalation of tri-terr-butylsilylphosphane with bis[bis(trimethylsilyl)amino]stannylen yields nearly quantitatively the tetrameric tin(II) tri-terf-butylsilylphosphandiide with a central Sn 4 P 4  cubane moiety. Barium bis[tri-tert-butylsilylphosphanide] is accessible via the reaction of tri-tert-butylsilylphosphane with barium bis[bis(trimethylsilyl)amide] in the molar ratio 2 : 1 . This phosphanide reacts with bis[bis(trimethylsilyl)amino]stannylen to give barium tritin(II) tetrakis[μ3-tri-tert-butylsilylphosphandiide]. Crystallographic data of 1: P 2 1 2 1 2 1 , T = 193 K, a = 1532.6(3), b = 2120.2(4), c = 2194.0(5) pm, V = 7.129(3) nm 3 , Z = 4, R, = 0.0360 (9132 observed data [I &gt; 2a( f) ] ) , wR2 = 0.1064 (all data); crystallographic data of 3: P 2 1 /c, T = 193 K, a = 1927.35(1), b = 1799.27(2), c = 2201.35(2) pm, β = 93.010(1)°, V = 7.6234(1) nm3, Z = 4, R 1  = 0.0321 (11993 observed data [I &gt; 2σ(/)]), wR2 = 0.0772 (all data).

zeitschrift für naturforschung b

Tetrazinn(II)-und Bariumtrizinn(II)-tetrakis[μ3 -tri-ter/-butyIsilylphosphan- diid]-Verbindungen mit einem Tetrametallatetraphosphacuban-Gerüst / Tetratin(II) and Barium Tritin(II) Tetrakis[μ3-tri-rm-butylsilylphosphandiide] Compounds with a Tetrametallatetraphosphacubane Core