Determination of the nucleophilicity of tricarbonyliron coordinated cyclohepta-1,3,5-triene

Authors
Mayr, H Muller, KH
Citation
H. Mayr et Kh. Muller, Determination of the nucleophilicity of tricarbonyliron coordinated cyclohepta-1,3,5-triene, COLL CZECH, 64(11), 1999, pp. 1770-1779
Citations number
26
Categorie Soggetti
Chemistry
Journal title
COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS
ISSN journal
00100765 → ACNP
Volume
64
Issue
11
Year of publication
1999
Pages
1770 - 1779
Database
ISI
SICI code
0010-0765(199911)64:11<1770:DOTNOT>2.0.ZU;2-K
Abstract
The kinetics of the electrophilic additions of four diarylcarbenium ions (4 a-4d) to tricarbonyl(eta(4)-cyclohepta-1,3,5-triene)iron (1) have been stud ied photometrically. The second-order rate constants match the linear Gibbs energy relationship log k(20 degrees C) = s(E + N) and yield the nucleophi licity parameter N(1) = 3.69. it is concluded that electrophiles with E gre ater than or equal to -9 will react with complex 1 at ambient temperature.