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Titolo:
THE MECHANISM OF DIRECTIONAL OXIDATION OF HYDRAZINE BY SILVER COORDINATION-COMPOUNDS
Autore:
CHENG DP; XIA SJ; TONG JL;
Indirizzi:
HANGZHOU UNIV,DEPT CHEM HANGZHOU 310028 PEOPLES R CHINA
Titolo Testata:
Transition metal chemistry
fascicolo: 6, volume: 21, anno: 1996,
pagine: 503 - 506
SICI:
0340-4285(1996)21:6<503:TMODOO>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
15
Recensione:
Indirizzi per estratti:
Citazione:
D.P. Cheng et al., "THE MECHANISM OF DIRECTIONAL OXIDATION OF HYDRAZINE BY SILVER COORDINATION-COMPOUNDS", Transition metal chemistry, 21(6), 1996, pp. 503-506

Abstract

The reactions of different Ag complexes with hydrazine have been studied and it has been shown that a trace amount of Cu-II ion can increase the rate, greatly raising the percentage of N-2 formed by the four-electron oxidation of hydrazine (Reaction 4). In the absence of the Cu-II ion, the percentage of N-2 formed is linearly related to log beta(2) of the Ag complex. In the presence of the Cu-II ion, the percentage of N-2 formed by the one-electron oxidation of hydrazine is likewise linearly related to 1/log beta(2): 4Ag(+)(AgL(2)(q+/-)) + N2H4 <-> 4Ag N-2 + 4H(+)(+ 8L([q+/-(-1)]/2)) (4) Ag+(AgL(2)(q+/-)) + N2H4 <-> Ag 1/2N(2) + NH3 + H+(+ 2L([q+/-(-1)]/2)) (5) A mechanism is proposed in which the first oxidation product is a hydrazyl radical, which further oxidizes or dimerizes. When a catalytic quantity of Cu-II ion was added to the system, Reaction 4 is accelerated and Reaction 5 inhibited.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 11:59:34