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'Cyclotriphosphane Complexes' in keywords
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1984 (1)
1982 (1)
1Author    Marianne Baudler, Franz Salzer, Josef HahnRequires cookie*
 Title    Beiträge zur Chemie des Phosphors, 120 [1] Carbonyl-Triorganylcyclotriphosphan-Komplexe von Chrom und Wolfram Contributions to the Chemistry of Phosphorus, 120 [1] Carbonyl-Triorganylcyclotriphosphane Complexes of Chromium and Tungsten  
 Abstract    The reaction of triorganylcyclotriphosphanes, (RP)3 (R = i-Pr, £-Bu), with metal carbonyl-tetrahydrofuran complexes, M(CO)sTHF (M = Cr, W), yields the novel mono-nuclear and binuclear cyclotriphosphane-carbonylmetal complexes (RP)3M(CO)5 (R = i-Pr, *-Bu; M = Cr, W) 1-4 and (RP)3[M(CO)5]2 (R = t-Pr, M = Cr) 5, respectively. They are remarkably stable both thermally and to oxidation. Their structures have been elucidated by 31 P NMR spectroscopic investigations. The cyclotriphosphane functions as a 2-or a 4-electron donor, respectively, and behaves as a Ti-acceptor comparable to PI13P. Bei unseren Untersuchungen über Triorganyl-cyclotriphosphane (RP)3 [2, 3] konnten in den letz-ten Jahren bemerkenswert beständige Vertreter dieser Substanzklasse in reiner Form dargestellt werden [4-6, 1]. In diesem Zusammenhang interes-sierte die Frage, inwieweit diese Verbindungen in der Lage sind, an ein Übergangsmetall zu koor-dinieren [7]. Der einzige bislang bekannte Cy-clotriphosphan-Komplex, das Triphenylcyclotri-phosphan-tris(cyclopentadienyldicarbonylmangan), (C6H5P)3[Mn(CO)2CöH5]3, wurde unerwartet beim Versuch der Darstellung eines Phosphiniden-Kom-plexes erhalten [10]. Im folgenden wird über Syn-these und Eigenschaften der ersten ein-und zwei-kernigen Übergangsmetall-Komplexe mit Triorga-nylcyclotriphosphan-Liganden berichtet. Präparative Ergebnisse 
  Reference    Z. Naturforsch. 37b, 1529—1533 (1982); eingegangen am 26. Juli 1982 
  Published    1982 
  Keywords    Tri-isopropylcyclotriphosphane, Tri-£er£-butylcyclotriphosphane, Cyclotriphosphane Complexes, Chromium Complexes, Tungsten Complexes 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-1529.pdf 
 Identifier    ZNB-1982-37b-1529 
 Volume    37 
2Author    Karl-Friedrich Tebbe, Magda FehérRequires cookie*
 Title    Beiträge zur Strukturchemie phosphorhaltiger Ketten und Ringe, IX [1]  
 Abstract    Die Molekül-und Kristallstruktur von Tri-terf-butylcyclotriphosphan-pentacarbonyl-chrom(O), [(f-BuP)3Cr(CO)5] Structural Chemistry of Phosphorus-Containing Chains and Rings, IX [1] The M olecular and Crystal Structure of Tri-/m -butylcydotriphosphane-pentacarbonyl-chrom ium (0), [(r-BuP)3C r(C O)5] The structure of [(f-BuP)3C r(C O)5], C 17CrH2705P3, has been determ ined by single crystal X-ray techniques, solved by 'direct m ethods', and refined to R = 0.048, wR = 0.050 for 3657 reflections by blocked least squares. The com pound crystallizes in the space group P 2x/c with a = 1664.9 pm , b — 916.5 pm , c = 3089.8 pm, ß = 91.45° and Z = 8 formula units. The structure consists of two crystallographically independent but structurally nearly identical m ononuclear [(r-BuP)3C r(C O)5] complexes with the three-m em -bered ring (/-BuP)3 as an unidentate a-donor ligand. Com pared to the free molecule (r-BuP)3 the cyclophosphane ligand is slightly distorted on account of its coordination to the C r(C O)5-group. 
  Reference    (Z. Naturforsch. 39b, 37—42 [1984]; eingegangen am 8. Juli 1983) 
  Published    1984 
  Keywords    Tri-ter/-butylcyclotriphosphane-pentacarbonyl-chrom ium (0), Tri-tert-butylcyclotriphospane, Cyclotriphosphane Complex, Chromium Complex, Crystal Structure 
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 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-0037.pdf 
 Identifier    ZNB-1984-39b-0037 
 Volume    39