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pro vyhledávání: '"Hans Schumann"'
Autor:
Hans Schumann
Publikováno v:
Zeitschrift für Naturforschung B. 50:1494-1504
The oxovanadium(IV) complexes LVO and L′VO (L = dianion of 5,14-dihydro-6,8,15.17- tetramethyldibenzo[b.i][1,4.8,11]tetraazacyclotetradecine. H2L, and L′ = dianion of 5,14-dihydro-6,15-dimethyl-8,17-diphenyldibenzo[b,i][1,4,8,11]tetraazacyclotetr
Autor:
Hans Schumann
Publikováno v:
Zeitschrift für Naturforschung B. 50:1038-1044
Organo-substituted 1,3,5-hexahydrotriazine complexes of the type (RNCH2)3Mo(CO)3 (R = CH3, i - C3H7 and CH2C6H5) are obtained by ligand displacement from η6-C7H8Mo(CO)3 in high yields. These products have been characterized by 1H, 13C, 95Mo NMR, IR
Publikováno v:
Zeitschrift für Naturforschung B. 47:1125-1133
The alkyne containing halfsandwich complexes [C5H5(P(OCH3)3)2Fe(HC ≡ CC6H5)]PF6 (IIIa) and [C5H5(P(OCH3)3)2Fe(CH3O2CC = CCO2CH3)]PF6 (IIIb) are accessible by thermal acetonitrile substitution from [C5H5(P(OCH3)3)2Fe(NCCH3)]PF6 (I) in the presence o
Autor:
Hans Schumann, Liliana Eguren
Publikováno v:
Zeitschrift für Naturforschung B. 46:887-895
The reaction of nitrile solvate complexes [(C5H5)(P(OCH3)3)2(NCCH3)Fe]PF6 (Ia) and [(C5H5)(DPPE)(NCCH3)Fe]PF6 (Ib, DPPE = [(C6H5)2PCH2]2) with halogenophosphanes, -arsines or -stibines L′ afford the cationic complexes [(C5H5)(L2)(L′)Fe]PF6 (II, L
Publikováno v:
Zeitschrift für Naturforschung B. 45:1010-1018
31P and 125Te NMR data of trialkylphosphane tellurides are compared. The deviation of the shifts for Me3PTe and 'Bu3PTe from those of other phosphane tellurides is interpreted in terms of high s-character of the P–Te bond originating from the phosp
Publikováno v:
Zeitschrift für Naturforschung B. 42:674-678
The P - Te bond length in (tert-C4H9)3PTe of 2.368 Å corresponds to a bond order near 1.5. The distance may be influenced by the tert-C4H9 groups, but the 125Te NMR shift is well within the common R3PTe range, while 1J(125Te-31P) is about 140 Hz sma