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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 500 (1983), S. 65-72 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reaction of PF5 · CH3CN with HydrogensulfideThe reaction of PF5 · CH3CN with SH- proceeds with cleavage of the P—F bonds and/or by transformations of the coordinated CH3CN. The following species have been assigned in NMR spectra: of which the first three have been isolated as salts. The course of the reaction is discussed and a comparison is made to the reaction of AsF5 · CH3CN with SH-.
    Notes: Die Umsetzung von PF5 · CH3CN mit SH- führt sowohl zu Austauschreaktionen an der P - F-Bindung als auch zur Reaktion mit dem CH3CN-Liganden. Es wurden folgende Spezies NMR-spektroskopisch zugeordnet wovon die ersten drei auch präparativ isoliert wurden. Es wird der Ablauf der Reaktion diskutiert und ein Vergleich mit der Reaktion von AsF5 · CH3CN und SH- gegeben.
    Additional Material: 4 Ill.
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  • 2
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Tetraphenyl Imidodiphosphate as Ligand in Fluoro Complexes. 3. Fluoro Complexes of Niobium, Tantalum, and AntimonyTetraphenyl imidodiphosphate forms with NbF5, TaF5, and SbF5 the addition complexes MF5 · LH and (MF5)2(μ-LH). The imidodiphosphate acts in the latter as bidentately bridging ligand. Furtheron, it reacts with NbF5 and TaF5 by replacing fluoride forming tetrafloro and trifluoro complexes: [MF4(μ-L)]2 and MF3(η2-L)(OPh) or μ-O[MF3(η2-L)]2, resp., (M = Nb, Ta). SbF5 does not form substitution complexes. The constitution and conformation of the complexes have been concluded from n.m.r. spectroscopic data.
    Notes: Imidodiphosphorsäuretetraphenylester, (PhO)2P(O)NHP(O)(OPh)2 (LH), bildet mit NbF5, TaF5 und SbF5 in Acetonitril Additionskomplexe der Zusammensetzung MF5 · LH und (MF5)2(μ-LH). In letzteren fungiert der Ester als zweizähniger Brückenligand. Mit NbF5 und TaF5 reagiert er darüber hinaus unter Fluoridsubstitution zu Tetrafluoro- und Trifluorokomplexen: [MF4(μ-L)]2 und MF3(η2-L)(OPh) bzw. μ-O[MF3(η2-L)]2 (M = Nb, Ta). SbF5 bildet keine Substitutionskomplexe. Die Konstitutions- und Konformationsaussagen beruhen auf NMR-spektroskopischen Befunden.
    Additional Material: 2 Tab.
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 577 (1989), S. 223-228 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Neutral-Komplexe von Wolframoxidtetrafluorid mit HydrazinderivatenDer Anfangszustand der Reaktion der Hydrazin- und Hydrazon-Komplexbildung mit Wolframoxidtetrafluorid ist mit NMR untersucht worden. Komplexe vom Typ [WOF4L] (L = CH3NHNHCH3, (CH3)2NNHCH3, C2H5(CH3)NN(CH3)C2H5, C2H5(CH3)NNHCH3, PhCH3NN(CH3)2, CH3RNN=C(CH3)2 R = CH3, C2H5, Ph) wurden untersucht. Die Komplexe bilden pentagonale Bipyramiden mit beiden Stickstoffatomen in η2-Koordination mit den organischen Substituenten in der äquatorialen Ebene. Isomerie der Neutralkomplexe wurde auf Grund der unterschiedlichen Stellung der Substituenten am koordinierten Hydrazin (Hydrazon) gefunden. Ein Einfluß der Stellung der Substituenten auf die relative Stabilität der Isomeren wurde gefunden.
    Notes: The initial stage of the reaction of hydrazines and hydrazones complex formation with tungsten oxotetrafluoride has been investigated by n.m.r. Neutral complexes of the [WOF4L] type (L = CH3NHNHCH3, (CH3)2NNHCH3, C2H5(CH3)NN(CH3)C2H5, C2H5(CH3)NNHCH3, PhCH3NN(CH3)2, CH3RNN=C(CH3)2 R = CH3, C2H5, Ph) have been investigated. The complexes are pentagonal bipyramids with both nitrogen atoms of η2-coordination with the organic ligands in the equatorial plane. Isomerism of neutral complexes has been found which is due to different orientations of substituents of coordinated hydrazine (hydrazone). An influence of the orientation of substituents to the relative stability of the isomers has been found.
    Additional Material: 2 Ill.
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  • 4
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 27 (1989), S. 103-111 
    ISSN: 0749-1581
    Keywords: 45Sc NMR chemical shift scale ; ScIII complex formation ; Solvation effect on isomer stability ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 45Sc NMR parameters of isomeric ScIII hexacoordinated complexes ScCl6-nLnn-3 formed by the interaction of ScCl3 with donor monodentate molecules of trimethyl phosphate, dimethyl sulphoxide, dimethylformamide, dimethylacetamide, formamide, tetramethylurea and Ph3PO in non-aqueous solutions of CH3CN, CH3NO2, (CH3)2CO, CH3C(O)OC2H5, C4H8O and (C2H5)2O are reported. cis-ScCl3(TMP)3 has been shown to be the preferred species in solvents of low polarity. Increasing polarity of the medium leads to an increase in the relative concentration of trans-ScCl3(TMP)3, which has been explained in terms of the different solvation of cis and trans molecules owing to the difference in their polarity. The range of 45Sc NMR chemical shifts in scandium complexes covers ca 340 ppm.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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