Seisenbaeva, Gulaim
- Institutionen för molekylära vetenskaper, Sveriges lantbruksuniversitet
Sammanfattning
Oxoisopropoxide complexes of niobium, Nb6O8((PrO)-Pr-i)(14)((PrOH)-Pr-i)(2) (I), and rhenium, Re4O6((OPr)-Pr-i)(10) (II), were isolated as by-products of anodic oxidation of these metals in (PrOH)-Pr-i in the presence of LiCl as conductive additive. The common feature of both structures consists in the occurrence in their molecules of an M4O16 planar core formed in the formal absence of M-M bonding for I and in the presence of electron-deficient but surprisingly short (Re-Re 2.52-2.54 Angstrom) metal-metal bonds in II. The stability of this core for the oxoalkoxide derivatives of rhenium(V,VI) and niobium(V) and poor stability for those of tantalum(V) are discussed based on the results of quantum-chemical calculations. (C) 2003 Elsevier B.V. All rights reserved.
Nyckelord
niobium; rhenium; oxoalkoxides; electrochemical synthesis; X-ray single crystal; metal-metal bonds; molecular structure; EHT calculations
Publicerad i
Inorganica Chimica Acta
2004, volym: 357, nummer: 2, sidor: 468-474
SLU författare
Kessler, Vadim
- Московский государственный университет имени М. В. Ломоносова
UKÄ forskningsämne
Oorganisk kemi
Materialkemi
Publikationens identifierare
- DOI: https://doi.org/10.1016/S0020-1693(03)00499-7
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/2895