Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Acylthio- and thioacylthiophosphines [(RCES)(n)PPh3-n, E = O, S; N=1-3]: Synthesis and structural analysis
Autore:
Tani, K; Matsuyama, K; Kato, S; Yamada, K; Mifune, H;
Indirizzi:
Gifu Univ, Fac Engn, Dept Chem, Gifu 5011193, Japan Gifu Univ Gifu Japan5011193 v, Fac Engn, Dept Chem, Gifu 5011193, Japan Fuji Photo Film Co Ltd, Ashigara Res Labs, Kanagawa 2500193, Japan Fuji Photo Film Co Ltd Kanagawa Japan 2500193 s, Kanagawa 2500193, Japan
Titolo Testata:
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
fascicolo: 5, volume: 73, anno: 2000,
pagine: 1243 - 1252
SICI:
0009-2673(200005)73:5<1243:AAT[E=>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
13
Recensione:
Indirizzi per estratti:
Indirizzo: Kato, S Gifu Univ, Fac Engn, Dept Chem, Gifu 5011193, Japan Gifu Univ Gifu Japan 5011193 ngn, Dept Chem, Gifu 5011193, Japan
Citazione:
K. Tani et al., "Acylthio- and thioacylthiophosphines [(RCES)(n)PPh3-n, E = O, S; N=1-3]: Synthesis and structural analysis", B CHEM S J, 73(5), 2000, pp. 1243-1252

Abstract

Stoichiometric reactions of alkali metal thio- and dithiocarboxylates withPh2PCl, PhPCl2, and PBr3 gave the corresponding acylthio- and thioacylthiophosphines [(RCES)(n)PPh3-n, E = O, S; n = 1-3] 3-8 in moderate to good yields. The structures of (4-CH3C6H4COS)(n)PPh3-n. (3d: n = 1, 4d: n = 2, 5d: n = 3) and (4-CH3C6H4CS2)(2)PPh (7b) were analyzed by X-rays. In the thiocarboxylate derivatives 3d, 4d, and 5d, the intramolecular interactions between the carbonyl oxygen and the central phosphorus atoms are weak and the thiocarboxylato ligands act as monodentates through the sulfur atoms. Similarly, in the dithiocarboxylate derivative 7b, the intramolecular interactionsbetween the thiocarbonyl sulfur and the central phosphorus atoms are weak and the dithiocarboxylato ligands act as monodentates. The covalent phosphorus-sulfur and/or phosphorus-phenyl ipso-carbon bonds are nearly at right angles to one another, forming a distorted tetrahedron with the unshared electron pair orbital at the apex. The P-31 NMR spectra of the thiocarboxylic acid derivatives 3-5 show downfield shifts with an increase in the number of thiocarboxylato ligands, whereas those of the dithiocarboxylic acid derivatives 6-8 show upheld shifts.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 07:26:03