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Metallacyclobutene aus η 2 ‐Cyclopropen‐Komplexen des Titanocens und Zirkonocens
Author(s) -
Binger Paul,
Müller Patrik,
Herrmann Albert T.,
Philipps Petra,
Gabor Barbara,
Langhauser Franz,
Krüger Carl
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.19911241004
Subject(s) - chemistry , cyclopropene , crystal structure , medicinal chemistry , nuclear magnetic resonance spectroscopy , stereochemistry , crystallography
Metallacyclobutenes via η 2 ‐Cyclopropene Complexes of Titanocene and Zirconocene (η 2 ‐Cyclopropene)(trimethylposphane) complexes of titanocene ( 4 , 5 ) and zirconocene ( 8 ) are obtained in good yields by the reaction of 1,2‐diphenylcyclopropene ( 2 ) or 4,8‐dioxaspiro[2.5]oct‐1‐ene ( 3 ) with bis(trimethylphosphane)titanocene ( 1 ) and (1‐butene)(trimethylphosphane)zirconocene ( 7 ), respectively. In solution the new complexes 4 and 8 rearrange smoothly above room temperature to give the metallacyclobutene derivatives 6 and 9 . All new compounds were characterized by spectroscopic methods ( 31 P, 1 H, 13 C NMR), and the crystal structure of 9 was determined by an X‐ray analysis.