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1,3,5‐Triphosphabicyclo[3.1.0]hexene‐η 3 ,η 1 ‐diyl Hafnium Complexes: Structure and Reactivity
Author(s) -
Binger Paul,
Stutzmann Stefanie,
Stannek Jörg,
Günther Klaus,
Phillips Petra,
Mynott Richard,
Bruckmann Joachim,
Krüger Carl
Publication year - 1999
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(199905)1999:5<763::aid-ejic763>3.0.co;2-u
Subject(s) - chemistry , hafnium , ligand (biochemistry) , reactivity (psychology) , cyclooctatetraene , adduct , pentane , 1 hexene , carbene , hydrolysis , hexene , medicinal chemistry , crystallography , stereochemistry , zirconium , catalysis , inorganic chemistry , molecule , organic chemistry , ethylene , medicine , biochemistry , receptor , alternative medicine , pathology
It is shown that the (P≡C– t Bu) 3 ligand found in the hafnium complex (COT)Hf(P≡C– t Bu) 3 5 (COT = cyclooctatetraene), which we reported recently, [3] is also present in the new hafnium complex 12 , prepared by reaction of hexachloroethane with complex 5 in pentane, as well as in its trimethylphosphane adduct 14 . The structures of complexes 12 and 14 have been determined by X‐ray crystallography and that of 5 by comparing its 1 H‐, 13 C‐, and 31 P‐NMR spectra with those of the complexes 12 and 14 . The organophosphorus ligand in all three complexes is a 2,4,6‐tri‐ tert ‐butyl‐1,3,5‐triphosphabicyclo[3.1.0]hexene‐η 3 ,η 1 ‐diyl. Hydrolysis of complexes 5 and 12 with water gives the new phosphorus heterocycle 15 , whereas the new heterocycles 16 and 17 are formed in an approximately 1:1 mixture using either silica gel containing 2% H 2 O or Na 2 SO 4 · 10 H 2 O.