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Reactivity of The P 4 Molecule with Cobalt(I) and Rhodium(I) Polyphosphane Fragments
Author(s) -
Di Vaira Massimo,
Ehses Markus P.,
Peruzzini Maurizio,
Stoppioni Piero
Publication year - 2000
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200010)2000:10<2193::aid-ejic2193>3.0.co;2-u
Subject(s) - chemistry , rhodium , cobalt , reactivity (psychology) , molecule , stereochemistry , organic chemistry , catalysis , medicine , alternative medicine , pathology
The reaction of white phosphorus with the electronically and coordinatively unsaturated systems [(PP 3 )M] + [PP 3 = tris(2‐diphenylphosphanylethyl)phosphane; M = Co, Rh] and [(NP 3 )Rh] + [NP 3 = tris(2‐diphenylphosphanylethyl)amine] in tetrahydrofuran affords new tetraphosphorus complexes. The PP 3 metal fragments yield the trigonal bipyramidal [(PP 3 )M(η 1 ‐P 4 )] + complex cations [M = Co I (1) , Rh I (2) ] containing the intact P 4 molecule bonded end‐on to the metal. In contrast, the [(NP 3 )Rh] + system yields an octahedral rhodium(III) complex of formula [(NP 3 )Rh(η 2 ‐P 4 )]BPh 4 (3) which contains a bicyclotetraphosphane ligand (P 4 2− ) coordinated to the metal through the wing‐tip P atoms. Compound 3 forms through the oxidative addition of the P 4 molecule to the metal fragment. These new tetraphosphorus derivatives, which are very reactive, have been characterized in solution at low temperature by 31 P NMR spectroscopy.