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'Chelate Complexes' in keywords
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1998 (1)
1996 (1)
1987 (2)
1Author    Gerhard Henig, Helmut WernerRequires cookie*
 Title    Mesitylene Osmium(II) Complexes Containing the Functional Phosphane ^BuP(CH2C 0 2Me)2 and Anionic Species Derived Thereof as Bi-and Tridentate Ligands  
 Abstract    The dichloroosmium(II) compound [(mes)OsCl2(L)] (2) with L = fBuP(CH2C0 2 Me)2 reacts with one or two equivalents of AgPFö to give the mono-or dicationic complexes 3 and 4 containing the phosphanediyldiester as a bi-or tridentate chelating ligand. Complex 4 undergoes, in the presence of water, partial hydrolysis to give the difluorophosphatoosmium(II) derivative 5 in quantitative yield. Treatment of 4 with two equivalents of KOfBu affords by deprotonation at both CH2 groups of L the neutral complex 6, in which one PCHC0 2 Me unit of the dianionic ligand |7BuP(CHC0 2 Me)2]2-forms a five-membered and the other PCHC0 2 Me unit a three-membered ring with the metal. The reaction of 6 with water leads selectively to the formation of the chelate complex 7 containing the phosphanediylbis(carboxylate) [/BuP(CH2C0 2)2]2~ as a tripodal ligand. 
  Reference    Z. Naturforsch. 53b, 540—544 (1998); received February 26 1998 
  Published    1998 
  Keywords    Osmium, Halfsandwich Complexes, Chelate Complexes, Phosphanediyldiester 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0540.pdf 
 Identifier    ZNB-1998-53b-0540 
 Volume    53 
2Author    Karlheinz Stahl, Kurt DehnickeRequires cookie*
 Title    Reaktionen von Acetylenkomplexen des Wolfram(IV) mit Tetrachloro-l,2-benzochinon Reactions of Acetylene Complexes of Tungsten(IV) with Tetrachloro-1,2-benzoquinone  
 Abstract    Acetylene complexes of tungsten(IV) of the type [WC14(RCSCR)]2 (R = halogene, phenyl) react with tetrachloro-1,2-benzoquinone to give monomeric tungsten(VI) chelate complexes WC12(02C6C14)2 and W(02C6C14)3, respectively. The complexes have been characterized by their IR and mass spectra. 
  Reference    Z. Naturforsch. 42b, 253—254 (1987); eingegangen am 26. September 1986 
  Published    1987 
  Keywords    Chelate Complexes, Tungsten(VI), Tetrachloro-1, 2-benzoate Ligands, Synthesis 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0253_n.pdf 
 Identifier    ZNB-1987-42b-0253_n 
 Volume    42 
3Author    Rostislav Lam, ShahramM. Ihanb, Wolfgang BeckbRequires cookie*
 Title    Metallkomplexe mit biologisch wichtigen Liganden, LXXXY [1] Koordinationsverbindungen von Cobalt(III), Iridium(III), Ruthenium(II) und Palladium(II) mit Isoxazol-und Isoxazolin-3-carboxylaten M etal Complexes of Biologically Im portant Ligands, LXXXV [1] Coordination Compounds of C obalt(III), Iridium (III), R uthenium (II) and Palladium(II) with Isoxazole-and Isoxazoline-3-carboxylates  
 Abstract    Chelate complexes of 5-phenyl-isoxazole-3-carboxylate (L 1) and 5-phenyl-isoxazoline-3-carboxylate (L2) ligands were prepared: PdfL 1)-). C p*(C l)Ir(L '), (p-cym ene)(Cl)Ru(L1), Pd(L2)2, (Et3P)(Cl)Pd(L2), C6H4CH 2N M e2Pd(L2)-L 2H, Cp*(I)Co(L2), Cp*(Cl)Ir(L2) (10), and (p-cymene)(Cl)Ru(L2) (Cp* = C5Me5). The structure of 10 was determined by X-ray diffraction. 
  Reference    Z. Naturforsch. 51b, 581—587 (1996); eingegangen am 27. Juli 1995 
  Published    1996 
  Keywords    Isoxazole-3-carboxylate, Isoxazoline-3-carboxylate, Chelate Complexes, Cobalt, Iridium 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0581.pdf 
 Identifier    ZNB-1996-51b-0581 
 Volume    51 
4Author    GerdU. Spiegel, Othmar StelzerRequires cookie*
 Title    PH-funktionelle Phosphane mit a-und ^-ständigen 2-Pyridylsubstituenten 2-C5H4N—[CH  
 Abstract    2 ]"—PRH (R = H, /Pr, fBu, Ph, 2-C 5 H 4 N-[CH 2 ]"; n = 1, 2) PH-Functional Phosphanes with 2-Pyridyl Substituents in a-or ß-Position 2-C5H4N —[CH 2 ]"—PRH (R = H, /Pr, rBu, Ph, 2-C 5 H 4 N-[CH 2 ]"; n = 1,2) PH-functional phosphanes containing a 2-pyridyl substituent in a-or /3-position to phosphorus, e.g. 2-C 5 H 4 N — [CH 2 ]"—PRH (R = H, /Pr, *Bu, Ph; « = 1,2) have been obtained. The reactivity of the PH-groups can be employed for the synthesis of tridentate NPN-hvbrid donors. [2-C5H4N —CH 2 —CH 2 ] 2 PR (R = H. Ph). The phosphanes 2-C 5 H 4 N-[CH 2 ]"-PRH behave as monodentate ligands in transition metal complexes and form labile chelate ring systems. They may bridge metal-metal bonds to form seven membered ring systems, e.g. Mo 2 PC 3 N. The coordi-nation of the N-donor of the ligands 2-C 5 H 4 N — [CH,]"-PRH to a transition metal atom is indi-cated by a lowfield shift and a small 3I P-13 C-splitting of the l3 C{ ! H} NMR signal of carbon atom 6 in the pyridin ring system. 
  Reference    Z. Naturforsch. 42b, 579—588 (1987); eingegangen am 4. August 1986 
  Published    1987 
  Keywords    2-Pyridyl Substituent, Reactions at PH-Functions, Chelate Complexes, Ligand Replacement, I3 C{'H} NMR Spectra 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0579.pdf 
 Identifier    ZNB-1987-42b-0579 
 Volume    42