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Aminosilylgermylenes: ( E )‐Digermene versus Germylene Crystallization [1]
Author(s) -
Schäfer Annemarie,
Saak Wolfgang,
Weidenbruch Manfred
Publication year - 1998
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/(sici)1521-3749(199809)624:9<1405::aid-zaac1405>3.0.co;2-7
Subject(s) - crystallography , chemistry , crystallization , silylene , monomer , germanium , crystal (programming language) , molecule , crystal structure , stereochemistry , physics , silicon , polymer , computer science , programming language , organic chemistry
The diaminosilylene t BuNCH 2 CH 2 N t BuSi: reacted with the diaminogermylenes RNCH 2 CH 2 NRGe: R = 2,6‐Me 2 C 6 H 3 , i Pr, by silylene insertion into one of the Ge–N bonds to furnish the aminosilylgermylenes 8 , R = 2,6‐Me 2 C 6 H 3 , and 9 , R = i Pr. The X‐ray structure analyses of these compounds revealed that 8 remains monomeric in the crystal with weak Ge … Ge interactions to the germanium atom of a neighbouring germylene molecule, whereas 9 dimerizes to give the strongly twisted ( E )‐1,2‐diamino‐1,2‐disilyldigermene ( E )‐ 10 with a long Ge–Ge double bond of 246 pm and a large trans ‐bent angle of 47.3°.