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Base‐Induced Intramolecular Formation of a MoMo Bond in [L 2 Mo 2 III μ‐OH(μ‐CH 3 CO 2 ) 2 ] 3⊕ (L = N,N′,N″ ‐Trimethyl‐1,4,7‐triazacyclononane)
Author(s) -
Neves Ademir,
Bossek Ursula,
Wieghardt Karl,
Nuber Bernd,
Weiss Johannes
Publication year - 1988
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198806851
Subject(s) - deprotonation , intramolecular force , chemistry , base (topology) , triple bond , metal , transition metal , medicinal chemistry , crystallography , stereochemistry , polymer chemistry , double bond , organic chemistry , catalysis , ion , mathematical analysis , mathematics
The MoMo distance shrinks from 3.555 to 2.885 Å on deprotonation of the OH‐bridge in 1 . This, as also the drastic changes in the UV/VIS spectrum and in the magnetic properties, clearly indicates a transition from a classical Werner complex to a complex with metal–metal bonding. MO considerations suggest that the Mo‐‐Mo bond in deprotonated 1 is an intramolecularly formed triple bond. The deprotonation of 1 is a completely reversible reaction.