ZfN: Search Results

1	Author	Mit Komplexe, KupferUnd Mangan, Zink, CarstenO. Kienitz, Carsten Thöne, PeterG. Jones	Requires cookie*
	Title	Zur Koordinationschemie des 2,2'-Dipyridyldiselenids (PySeSePy), Teil 2 [1]
	Abstract	The coordination chemistry of 2,2'-dipyridyldiselenide (PySeSePy) towards mangane se, copper and zinc centres has been studied. The complexes [MnBr2-/V,/V'-(PySeSePy)] (1), [CuBr2-/V,/V'-(PySeSePy)] (2), [Cu-(//-Br)-7V(/V'-(PySeSePy)]2 (3), [Cu-()U-Br)-{p-N,N'-(PySeSePy)}]" (4), [Cu-(/i-Cl)-/V,W'-(PySeSePy)]2 (5), [Zn(OOCC6F5)2-/V,/V'-(PySeSePy)] (6) and [Z n (0 S 0 2CF3)2-./V>/V'-(PySeSePy)] (7) have been synthesised and the crystal structures of 1, 3, 4 and 6 determined. 1, 3 and 6 display seven-membered metallacycles with tetrahedral coordination of the metal centres. In these cases 2,2'-dipyridyldiselenide acts as a chelating ligand. In the polymeric complex 4, 2,2'-dipyridyldiselenide acts as a bridging ligand. All com plexes display selenium-selenium single bonds with an average length of 232 pm. In contrast to the analogous chloro and nitrato complexes, the zinc complexes 6 and 7 are not dissociated in solution, as evidenced by 77Se NMR experiments. The corresponding resonances are shifted downfield in comparison with the ligand.
	Reference	Z. Naturforsch. 55b, 587—596 (2000); eingegangen am 3. März 2000
	Published	2000
	Keywords	Manganese, Copper, Zinc
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	TEI-XML for	default:Reihe_B/55/ZNB-2000-55b-0587.pdf
	Identifier	ZNB-2000-55b-0587
	Volume	55

2	Author	Jutta Knaudta, Stefan Försterb, Ulrich Bartsch3, Anton Riekerb, Ernst-G Jägera	Requires cookie*
	Title	Catalytic Oxidation of a Trialkyl-Substituted Phenol and Aniline with Biomimetic Schiff Base Complexes
	Abstract	The catalytic oxidation of 2,4.6-tri-f6rr-butylphenol and 2,4,6-tri-te/-r-butylaniline with mo lecular oxygen and rerf-butylhydroperoxide was investigated using biomimetic Mn-, Fe-and Co-complexes as catalysts. The catalytic activity and product distribution were determined and compared with those observed in the reactions of the well-known Co(salen) complex.
	Reference	(Z. Naturforsch. 55b, 86—93 [2000]; received Septem ber 22 1999)
	Published	2000
	Keywords	Biomimetic Catalysts, Oxidation, Macrocycles, Manganese, Iron, Cobalt
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	TEI-XML for	default:Reihe_B/55/ZNB-2000-55b-0086.pdf
	Identifier	ZNB-2000-55b-0086
	Volume	55