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The First Oligomeric Samarium(II) Silylamide: Coordinative Saturation through Agostic Sm···SiH Interactions
Author(s) -
Nagl Iris,
Scherer Wolfgang,
Tafipolsky Maxim,
Anwander Reiner
Publication year - 1999
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/(sici)1099-0682(199909)1999:9<1405::aid-ejic1405>3.0.co;2-#
Subject(s) - chemistry , agostic interaction , samarium , saturation (graph theory) , inorganic chemistry , organic chemistry , metal , mathematics , combinatorics
Sm[N(SiMe 3 ) 2 ] 2 (thf) 2 reacts with 1,1,3,3‐tetramethyldisilazane by a transsilylamination reaction to form the hexane‐soluble Sm[N(SiHMe 2 ) 2 ] 2 (thf) x in high yield. An X‐ray diffraction study reveals a novel trinuclear complex of composition Sm{[μ‐N(SiHMe 2 ) 2 ] 2 Sm[N(SiHMe 2 ) 2 ](thf)} 2 featuring a bent array of metal centers. Multiple metal ··· SiH β‐agostic interactions sterically and electronically saturate the samarium(II) centers implying a new coordination mode of the bridging amide ligands.