The complex [Ni(CO)(dppb)2] (dppb = Ph2P[CH2]4PPh2) undergoes a two-stage reaction with C2N2 in CH2Cl2, at room temperature. The first stage gives almost equivalent quantities of [{Ni(CN)2(dppb)}2] and [Ni(CO)2(dppb)], whereas quantitative conversion of [Ni(CO)2(dppb)] into [{Ni(CN)2(dppb)}2] and CO is obtained in the second stage. The complexes [Ni(CO)(dppb){P(OR)3}](R = Et or Ph) react in a similar way under particular conditions. A kinetic investigation has been carried out on the first system and a reaction mechanism is proposed for its first stage.

Reactivity of cyanogen with monocarbonylnickel(0) complexes. Examples of combined oxidative substitution and internal ligand substitution

BASATO, MARINO;
1977

Abstract

The complex [Ni(CO)(dppb)2] (dppb = Ph2P[CH2]4PPh2) undergoes a two-stage reaction with C2N2 in CH2Cl2, at room temperature. The first stage gives almost equivalent quantities of [{Ni(CN)2(dppb)}2] and [Ni(CO)2(dppb)], whereas quantitative conversion of [Ni(CO)2(dppb)] into [{Ni(CN)2(dppb)}2] and CO is obtained in the second stage. The complexes [Ni(CO)(dppb){P(OR)3}](R = Et or Ph) react in a similar way under particular conditions. A kinetic investigation has been carried out on the first system and a reaction mechanism is proposed for its first stage.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/2519018
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