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Boryl‐ and Bridging Boryleneiron Complexes from Aminodichloroboranes
Author(s) -
Braunschweig Holger,
Kollann Carsten,
Englert Ulli
Publication year - 1998
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(199804)1998:4<465::aid-ejic465>3.0.co;2-5
Subject(s) - chemistry , boron , crystallography , crystal structure , nuclear magnetic resonance spectroscopy , spectroscopy , stereochemistry , organic chemistry , physics , quantum mechanics
Depending on the nature of the amino group bound to the boron atom, the reactions of various aminodichloroboranes R 2 NBCl 2 with Na[( η 5 ‐C 5 R′ 5 )Fe(CO) 2 ] yield either boryl or bridging borylene complexes of iron. The compounds [(C 5 R′ 5 )(CO) 2 Fe{BCl(NR 2 )}] ( 1a , C 5 R′ 5 = C 5 H 5 , R = Me; 1b , C 5 R′ 5 = C 5 H 4 Me, R = Me; 1c , C 5 R′ 5 = C 5 Me 5 , R = Me) and [( η ‐BNR 2 )( μ ‐CO){(C 5 R′ 5 )Fe(CO)} 2 ] ( 2a , C 5 R′ 5 = C 5 H 5 , R = SiMe 3 ; 2b , C 5 R′ 5 = C 5 H 4 Me, R = SiMe 3 ) were isolated as orange ( 1a−c ) or red ( 2a , b ) crystalline solids, and characterized by multinuclear NMR methods and IR spectroscopy. The structures of 1c and 2b in the crystalline state were determined by single‐crystal X‐ray studies.