Syntheses and spectroscopic features (IR, NMR and ESI MS) are reported for five 1:2 adducts of CuX with dppe (X = I, ClO4, NCS, O 3SCF3 (tfs) BH4; dppe = Ph2P(CH 2)2PPh2). ESI MS and 31P NMR spectroscopy indicate that these species dissociate in solution yielding free diphosphine and 3:2 species. A single crystal X-ray structure determination has been carried out on Cu(dppe)2NCS defining a four-coordinate complex of the form [(P,P′-dpex)M(P-dpex)X] for M = Cu, the thiocyanate being N-bound; the ionic [Cu(P,P′-dppe)2]tfs has also been structurally characterized
Synthesis, spectroscopic and structural characterization of adducts of stoichiornetry CuX : dppe (1 : 2) (X = I, ClO4, BH4, O3SCF3, SCN, dppe = Ph2P(CH2)(2)PPh2)
PETTINARI, Claudio;RICCIUTELLI, Massimo;DI NICOLA, CORRADO;
2005-01-01
Abstract
Syntheses and spectroscopic features (IR, NMR and ESI MS) are reported for five 1:2 adducts of CuX with dppe (X = I, ClO4, NCS, O 3SCF3 (tfs) BH4; dppe = Ph2P(CH 2)2PPh2). ESI MS and 31P NMR spectroscopy indicate that these species dissociate in solution yielding free diphosphine and 3:2 species. A single crystal X-ray structure determination has been carried out on Cu(dppe)2NCS defining a four-coordinate complex of the form [(P,P′-dpex)M(P-dpex)X] for M = Cu, the thiocyanate being N-bound; the ionic [Cu(P,P′-dppe)2]tfs has also been structurally characterizedFile in questo prodotto:
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