Approaches to bi- and trimetallic platinum and palladium complexes using the DPPEPM ligand

Bis{(diphenylphosphinoethyl)phenylphosphino}methane (DPPEPM) reacts with [PtR 2(cod)] in 1:1 ratio to give [PtR 2(DPPEPM- PP)] ( 2a, R=Me; 2b, R=Ph), whereas with [PtCl 2(cod)] or [PdCl 2(cod)] it yields the ionic species [M(DPPEPM- PP) 2] 2+ ( 3 and 4). With [MClMe(cod)], the product is [MMe(DPPEPM...

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Bibliographic Details
Published in:Inorganic chemistry communications 2003-10, Vol.6 (10), p.1307-1310
Main Authors: Nair, Padma, Anderson, Gordon K., Rath, Nigam P.
Format: Article
Language:English
Subjects:
Crystal structure(s)
Platinum and palladium complexes
Tetraphosphine ligands
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Summary:Bis{(diphenylphosphinoethyl)phenylphosphino}methane (DPPEPM) reacts with [PtR 2(cod)] in 1:1 ratio to give [PtR 2(DPPEPM- PP)] ( 2a, R=Me; 2b, R=Ph), whereas with [PtCl 2(cod)] or [PdCl 2(cod)] it yields the ionic species [M(DPPEPM- PP) 2] 2+ ( 3 and 4). With [MClMe(cod)], the product is [MMe(DPPEPM- PPP)] + ( 5, M=Pt; 6, M=Pd), in which one of the internal P atoms of the ligand is uncoordinated. These complexes undergo oxidation of the free P atom to give 7 and 8 on standing in solution. Complexes 2–4 may be used to construct bimetallic and trimetallic mixed metal complexes. The molecular structures of 7 and [PtMe 2(μ-DPPEPM)PdCl 2] ( 11) are reported.
ISSN:1387-7003
1879-0259
DOI:10.1016/j.inoche.2003.08.004