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New [2]Boraferrocenophane and Diferrocenyldiborane(4) Derivatives
Author(s) -
Braunschweig Holger,
Damme Alexander,
Kupfer Thomas
Publication year - 2010
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/ejic.201000705
Subject(s) - chemistry , diborane , stereochemistry , derivative (finance) , ring (chemistry) , crystallography , ring strain , boron , organic chemistry , financial economics , economics
The new [2]boraferrocenophane derivative [Fe(η 5 ‐C 5 H 4 )–B(Mes)–B(Mes)–(η 5 ‐C 5 H 4 )] ( 2 ) was prepared by reaction of 1,1′‐dilithioferrocene with B 2 (Mes) 2 Cl 2 . In addition, the diborane(4) B 2 (NMe 2 ) 2 Fc 2 ( 3 ) was isolated from the reaction of B 2 (NMe 2 ) 2 Cl 2 and monolithioferrocene. Both species were fully characterized including X‐ray diffraction analyses. While B 2 (NMe 2 ) 2 Fc 2 ( 3 ) adopts an unstrained geometry, [2]boraferrocenophane 2 features notable molecular ring strain manifested in the tilt‐angle a = 10.5(2)°.