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Titolo:
Synthesis and structural studies of pyridine-2-selenolates - Reactions with electrophilic phosphorus(III) compounds and related complex chemistry
Autore:
Laube, J; Jager, S; Thone, C;
Indirizzi:
Tech Univ Carolo Wilhelmina Braunschweig, Inst Anorgan & Analyt Chem, D-38106 Braunschweig, Germany Tech Univ Carolo Wilhelmina Braunschweig Braunschweig Germany D-38106 ny
Titolo Testata:
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
fascicolo: 8, , anno: 2001,
pagine: 1983 - 1992
SICI:
1434-1948(200108):8<1983:SASSOP>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
LEWIS-BASE ADDUCTS; GROUP-11 METAL(I) COMPOUNDS; NUCLEAR-MAGNETIC-RESONANCE; VOLATILE CVD PRECURSORS; CRYSTAL-STRUCTURES; PYRIDINESELENOLATE COMPLEXES; COORDINATION CHEMISTRY; TRANSFER HYDROGENATION; PYRIDYLSELENO GROUP; COPPER(I) HALIDES;
Keywords:
selenium; P ligands; molybdenum; metallacycles; coinage-metal complexes;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
54
Recensione:
Indirizzi per estratti:
Indirizzo: Thone, C Tech Univ Carolo Wilhelmina Braunschweig, Inst Anorgan & Analyt Chem, Hagenring 30, D-38106 Braunschweig, Germany Tech Univ Carolo Wilhelmina Braunschweig Hagenring 30 Braunschweig Germany D-38106
Citazione:
J. Laube et al., "Synthesis and structural studies of pyridine-2-selenolates - Reactions with electrophilic phosphorus(III) compounds and related complex chemistry", EUR J INORG, (8), 2001, pp. 1983-1992

Abstract

The reaction intermediates in the synthesis of 2,2 ' -bis(pyridyl) diselenide (2,2 ' -PY2Se2) have been determined. The reaction of Na2Se2 with 2-BrC5H4N (2-BrPy) leads to a tautomeric mixture of pyridine-2-selenol (2-PySeH)and pyridine-2(1H)-selone (2-PyHSe), which have been investigated by spectroscopic means. Additionally, the crystal structure of the latter has been determined. Reductive cleavage of the Se-Se bond in 2,2 ' -Py2Se2 with KBsBu(3)H leads to K-2-SePy, which was trapped, either as [(18-crown-6)K](+)[2-PySe](-), whose structure contains polymeric cation-anion chains, or as [Et4N](+)[2-PySe](-). Reactions of K-2-SePy or [Et4N](+)[2-PySe](-) with Ph2PCl, tBu(2)PCl, or tBuPBr(2) lead to the corresponding extremely air-sensitive (pyridyl)selenophosphanes Ph2P-2-SePy, tBu(2)P-2-SePy, and tBuP(2-SePy)(2). The latter was trapped as tBuP(O)(2-SePY)(2), whose crystal structure has been determined. Metal complexes of these (pyridyl)selenophosphanes have been prepared starting from the phosphane and CuBr, AgBr, (tht)AuCl (tht = tetrahydrothiophene), or [(eta (6)-C7H8)Mo(CO)(3)], in one-pot syntheses. All crystal structures of the resulting metallacycles [({(C5H4N-2-Se)tBu(2)P}-N,P)Cu(mu -Br)](2), [({(C5H4N-2-Se)tBu(2)P}-N,P)Ag(mu -Br)](2), [({(C5H4N-2-Se)tBu(2)P}-P)AuCl], and [({(C5H4N-2-Se)(2)tBuP}-N,N ' ,P)Mo(CO)(3)], were determined. Additionally, comprehensive spectroscopic investigations arepresented.

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Documento generato il 29/03/20 alle ore 18:17:27