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[{Cp * Cr(μ 3 ‐H)} 4 ]—a Paramagnetic Chromium Hydride with a Cubane Structure
Author(s) -
Heintz Robert A.,
Haggerty Brian S.,
Rheingold Arnold L.,
Theopold Klaus H.,
Wan Hong
Publication year - 1992
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.199210771
Subject(s) - cubane , paramagnetism , chromium , hydride , chemistry , crystallography , alkyl , divalent , inorganic chemistry , crystal structure , metal , condensed matter physics , organic chemistry , physics
For the exploration of the organometallic chemistry of divalent chromium , the readily synthesized Cr II complex 1 is a simple starting material. The chloro bridges can be exchanged for alkyl groups (R = Me, n Bu, CH 2 SiMe 3 ), and the resulting complexes 2 react with H 2 to give the tetranuclear hydrido complex 3 with a cubane structure. Unexpectedly, 3 shows almost ideal Curie paramagnetism according to magnetic measurements.