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Komplexierung von 1,3‐Dihydro‐1, 3, 10, 10‐tetramethyl‐1, 3‐dibora‐4, 5‐benzopentafulven mit Fe(CO) 3 ‐ und CpCo‐Fragmenten: Synthese, Kristall‐ und Elektronenstruktur von Tricarbonyl[η 5 ‐cyclopentadienyl)cobalt] [μ,η 5 :η 4 ‐(1, 3‐dihydro‐1, 3, 10, 10‐tetramethyl‐1, 3‐dibora‐4, 5‐benzopentafulven)]eisen
Author(s) -
NagyMagos Zsuzsanna,
Feßenbecker Achim,
Pritzkow Hans,
Siebert Walter,
HylaKryspin Isabella,
Gleiter Rolf
Publication year - 1991
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19911241208
Subject(s) - chemistry , cyclopentadienyl complex , crystallography , crystal structure , ring (chemistry) , cobalt , group 2 organometallic chemistry , stereochemistry , x ray crystallography , triple bond , group (periodic table) , molecule , double bond , catalysis , polymer chemistry , inorganic chemistry , diffraction , physics , organic chemistry , optics , biochemistry
Complexation of 1, 3‐Dihydro‐1, 3, 10, 10‐tetramethyl‐1, 3‐dibora‐4, 5‐benzopentafulvene with Fe(CO) 3 and CpCo Fragments: Synthesis, Crystal and Electronic Structure of Tricarbonyl[(η 5 ‐cyclopentadienyl)cobalt][μ,η 5 :η 4 ‐(1, 3‐dihydro‐1, 3, 10, 10‐tetramethyl‐1, 3‐dibora‐4, 5‐benzopentafulvene)]iron Reaction of the 1, 3‐dibora‐4, 5‐benzopentafulvene 1 with the isolobal organometallic fragments Co(C 5 H 5 ) and Fe(CO) 3 leads to the slipped triple‐decker complex 5 . It is also formed when 2 is stacked with the Co(C 5 H 5 ) fragment. The X‐ray structure analysis of 5 reveals that the Co(C 5 H 5 ) fragment is coordinated to the 1, 3‐diborole ring, and the Fe(CO) 3 group interacts with the Y‐shaped B 2 CC unit. An MO calculation indicates that the formation of 5 occurs by distortion of 2 (η 5 ‐ → η 4 ‐bonding) and complexation of the Co(C 5 H 5 ) group. 5 is 16 kcal/mol more stable than its structural isomer 6 .