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An Unprecedented Coordination Mode of the Tris(pyrazolyl)methane Donor Set in {[Ph2(O)POCH2C(pz)3Ag]2(THF)2}(BF4)2: kappa2-kappa1, Bimetallic, Nsigma/Npi Chelating

Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Daniel L. Reger, Radu F. Semeniuc, Burjor Captain, and Mark D. Smith

Editorial: Inorg. Chem., 44, p.2995 -2997, 2005.

Rezumat:

The structure of the compound {[Ph2(O)POCH2C(pz)3Ag]2(THF)2}(BF4)2 (pz = pyrazolyl ring) revealed a new coordination mode for the tris(pyrazolyl)methane donor set: two pyrazolyl rings bridging the same two silvers atoms using normal -type orbitals on the nitrogen donor atoms while the third pyrazolyl ring coordinates side-on to one of the silver atoms with a nitrogen-based -type orbital. The dimeric arrangement is also supported by a weak silver-silver interaction. This bonding description is supported by Fenske-Hall molecular orbital calculations.

Cuvinte cheie: tris(pyrazolyl)methane, silver, Fenske-Hall molecular orbital calculations