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  • 1
    Electronic Resource
    Electronic Resource
    Oligophosphane Ligands, XLIPart XL: A Saare, L. Dahlenburg, Z. Naturforsch. B: Chem. Sci. 1995, 50, 1009-1017.. Oxidative Additions of Transition Metal-Hydrogen Bonds: Reactions of CpM(CO)3H (M = Mo, W) with [tBuP(CH2CH2CH2PPh2)2]M′Cl(M′ = Rh, Ir)Dedicated to Professor Dr. Erwin Weiß on the occasion of his 70th birthday. (1996)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 129 (1996), S. 677-682 
    Details
    ISSN: 0009-2940
    Keywords: Oligophosphane complexes ; Metal-Hydrogen bonds ; Hydrogen transfer ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Treatment of (PP2)IrCl[PP2 = tBuP(CH2CH2CH2PPh2)2] with an equimolar quantity of CpM(CO)3H (M = Mo, W) or with HCl in THF resulted in smooth protonation of the d8 substrate producing [(PP2)Ir(H)Cl]X {X- = [CpMo(CO)3]- (1), [CpW(CO)3]- (2), Cl- (3)}. Combination of (PP2)IrCl and CpM(CO)3H in a 2:1 stoichiometry gave (PP2)Ir(H)Cl2 (7) together with [(PP2)IrCO]-[Mo(CO)3Cp] (8) or [(PP2)IrCO][W(CO)3Cp] (9). The rhodium analogues (PP2)Rh(H)Cl2 (4), [(PP2)RhCO][Mo(CO)3Cp] (5), and [(PP2)RhCO][W(CO)3Cp] (6) were obtained similarly from (PP2)RhCl and CpM(CO)3H. Structural assignments for [(PP2)Ir(H)Cl]+ and (PP2)M′(H)Cl2 (M′ = Rh, Ir) as diastereomers in which the hydrido ligand and the tBu substituent on the central phosphorus atom are located on the same side or on opposite sides of the PP2 reference plane of the meridionally bound tBuP(CH2CH2CH2PPh2)2 ligand are made on the basis of (i) correlations with known structures and reactivities of similar [(RP(CH2CH2CH2PR′2)2M′(H)Cl]+ cations and (ii) an X-ray structure determination of 4. The crystal structure analysis of a [(PP2)RhCO]+ salt, closely related to 5/6 and 8/9, [(PP2)Rh(CO)][OCO2H] (10), demonstrates that in the solid state the four-coordinate [(PP2)RhCO]+ cation and its counterion exist as essentially charge-neutralized Rh⃛O-contacted ion pairs, two of which are linked by O—H⃛O bridges to centrosymmetric dimers. Ion pairing was also observed by IR spectroscopy for THF solutions of metalates 5/6 and 8/9.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19961290614
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    P-Alkylated (1S,2S)-Cyclopentane-1,2-diylbisphosphanes with Four Stereogenic Centers and Some Group 10 Metal(II) Complexes Containing the (1S,2S)-C5H8[P(CH3)C8H15-cyclo]2 Ligand (1998)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 1998 (1998), S. 597-603 
    Details
    ISSN: 1434-1948
    Keywords: Chirality ; P ligands ; Nickel ; Palladium ; Platinum ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Radical-initiated P-H addition of (1S,2S)-C5H8(PH2)2 to cycloalkenes gave bis(secondary phosphanes), (1S,2S)-C5H8[P(H)CnH2n-1-cyclo]2 (n = 5-8), as mixtures of RP,RP′, SP,SP′, and RP,SP′ diastereomers. The three diastereomers of the peralkylated chiral P2 ligand (1S,2S)-C5H8[P(CH3)C8H15-cyclo]2 and its complexes with NiCl2, PdI2, and PtI2 were prepared. The structures of [(1S,2S)-C5H8{P(CH3)C8H15-cyclo(R)}2NiCl2] · [(1S,2S)-C5H8{P(CH3)C8H15-cyclo-(S)}2NiCl2],(1S,2S)-C5H8{P(CH3)C8H15-cyclo-(R)}2PdI2, and (1S,2S)-C5H8{P(CH3)C8H15-cyclo-(R)}2PtI2 were determined by X-ray diffraction.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    (1S,2S)-Cyclopentane-1,2-diyl-bis(phosphonous dichloride), (1S,2S)-C5H8(PCl2)2 - A Versatile Optically Active Reagent (1998)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 1998 (1998), S. 885-887 
    Details
    ISSN: 1434-1948
    Keywords: Chirality ; P ligands ; Synthetic methods ; Triphosgene ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Treatment of (1S,2S)-C5H8(PH2)2 (1) with OC(OCCl3)2 gave (1S,2S)-C5H8(PCl2)2 (2) as the first example of an optically active bis(phosphonous dichloride). 2 was converted to (1S,2S)-C5H8(PX2)2 [PX2 = P(OMe)2 (3), P(OPh)2 (4), P[OCH-(Me)Et-(S)]2 (5), P[2-OC10H6C10H6O-2′-(R)] (6), P(NC4H8O-cyclo)2 (7), P(C6H11-cyclo)2 (8)] by reactions with oxygen, nitrogen, and carbon nucleophiles.
    Type of Medium: Electronic Resource
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