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Lithium Arsanylalanates as Arsenide Sources: A Simple Route to the Zintl Anion As 7 3− and the Synthesis of a Tetraarsatetrasilacubane
Author(s) -
Driess Matthias,
Merz Klaus,
Pritzkow Hans,
Janoschek Rudolf
Publication year - 1996
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199625071
Subject(s) - lithium (medication) , thermal decomposition , decomposition , chemistry , arsenide , ion , crystallography , cubane , materials science , crystal structure , gallium arsenide , optoelectronics , organic chemistry , biology , endocrinology
A considerable extension of the synthetic potential of lithium arsenides is likely through the alanates [LiAl(AsHR) 4 ] (RH, triorganosilyl), which can be synthesized from LiAlH 4 and H 2 AsR. For example, the Zintl compound [Li(tmeda)] 3 As 7 1 was obtained by thermal decomposition in the presence of tmeda, and the first As 4 Si 4 cubane was prepared by mild arsanylation of RSiCl 3 (R2,4,6‐ i Pr 3 C 6 H 2 ). The novel complex 2 with an adamantane framework was formed from RAsH 2 (RMe 2 C( i Pr)SiMe 2 ) and LiAlH 4 . tmedaMe 2 NCH 2 CH 2 NMe 2 , dmeMeOCH 2 CH 2 OMe.