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Activation of a Zinc‐Bound Ethyl Group by Formation of a Zn‐C Et ‐Ba Moiety and Crystal Structure of [{(Me 3 Si) 2 N}Ba(thf)Zn 2 (μ‐Et)(μ 3 ‐PSi t Bu 3 ) 2 ] 2 with Bridging Ethyl Substituents
Author(s) -
Westerhausen Matthias,
Sapelza Gerhard,
Mayer Peter
Publication year - 2005
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200501899
Subject(s) - moiety , zinc , group (periodic table) , crystal structure , crystallography , chemistry , stereochemistry , crystal (programming language) , organic chemistry , computer science , programming language
The phosphane unit is deprotonated in the reaction of dialkylzinc with H 2 PSi t Bu 3 and (thf) 2 Ba[N(SiMe 3 ) 2 ] 2 to give the title compound (molecular structure shown), which has a coordinatively unsaturated barium center. In the absence of excess THF, the zinc‐bound alkyl groups are activated by formation of Ba‐C Et ‐Zn three‐center bonds.