Crystal structure and fluxional behaviour in solution of [Rh-4(CO)(6)(mu-Me2PCH2PMe2)(3)]

• Published in: DALTON TRANSACTIONS (ISSN: 1477-9226), num. 5, p. 968-972
• Publication date: 2003

[Rh-4 (CO)(6) (mu-Me2PCH2PMe2)(3)], the first example of a hexasubstituted derivative of Rh-4(CO)(12), has a ground state geometry in the solid state and in solution of C-s symmetry with four edge-bridging carbonyls and with each diphosphine ligand bridging one edge of the same Rh-3 face. The result is an imbalance of the formal electron count at two rhodium atoms. As observed by C-13- and P-31-NMR, the mobility of the ligands is restricted to one mu-CO <-> eta-CO site exchange which astonishingly does not average dynamically the electron count on all four metal atoms.

Keywords: cluster complexes ; dynamics ; ligand ; rh-4(co)(12) ; derivatives

Reference

• LCOM-ARTICLE-2003-006
• View record in Web of Science

Record created on 2005-11-09, modified on 2017-05-12