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- W2000804187 abstract "Durch Reaktion von [(Ph3PAu)4Co(CO)3]+ mit OH− in Gegenwart von uberschussigem Ph3PAuCl konnen die goldreicheren Clusterkationen [(Ph3PAu)6Co(CO)2]+ (1) und [(Ph3PAu)7Co(CO)2]2+ (2) aufgebaut werden, wobei 1 als Hauptprodukt anfallt. 1 kristallisiert mit PF−6 als Gegenion in der monoklinen Raumgruppe C2/c mit a = 3008,3(6); b = 1339,1(2); c = 2909,4(6) pm; β = 103,08(1)°; Z = 4. Im Clusterkation 1 mit der Symmetrie C2 bildet das CoAu6-Gerust die Struktur einer zweifach uberkappten trigonalen Bipyramide mit dem Heteroatom in aquatorialer Position. Die AuAu-Abstande liegen zwischen 280,4(1) und 288,4(1) pm die CoAu-Abstande zwischen 254,9(1) und 257,1(2) pm. 2 · (PF6)2 kristallisiert triklin in der Raumgruppe P1 mit a = 2155,7(1); b = 1720,6(1); c = 3543,6(1) pm; α = 91,89(1)°; β = 97,51(1)°; γ = 89,92(1)°; Z = 4. Die Elementarzelle enthalt zwei symmetrieunabhangige Clusterkationen 2 mit nahezu gleicher Gestalt, deren Au7Co-Gerust als leicht verzerrtes Ikosaederfragment aus sieben Au-Atomen mit dem Co-Atom im Zentrum beschrieben werden kann. Die AuAu-Abstande variieren von 274,8(3) bis 332,6(3) pm, die CoAu-Abstande betragen 256,8(6) bis 264,7(5) pm. Die Bindungsverhaltnisse in 1 und 2 werden diskutiert.Synthesis and Structure of [(Ph3PAu)6Co(CO)2](PF6) and [(Ph3PAu)7Co(CO)2](PF6)2By the reaction of (Ph3PAu)4Co[(CO)3]+ with OH− in the presence of excess Ph3PAuCl the larger cluster cations [(Ph3PAu)6Co(CO)2]+ (1) and [(Ph3PAu)7Co(CO)2]2+ (2) can be built up with 1 being the main product. 1 crystallizes with PF−6 as counterion in the monoclinic space group C2/c with a = 3008.3(6); b = 1339.1(2); c = 2909.4(6) pm; β = 103.08(1)°; Z = 4. The inner core of the cluster cation 1 with the symmetry C2 has the form of a bicapped trigonal bipyramid with the heteroatom in equatorial position, and distances AuAu between 280.4(1) and 288.4(1) pm and CoAu between 254.9(1) and 257.1(2) pm. 2 · (PF6)2 crystallizes in the triclinic space group P1 with a = 2155.7(1); b = 1720.6(1); c = 3543.6(1) pm; α = 91.89(1)°; β = 97.51(1); γ = 89.92(1)°; Z = 4. The unit cell contains two symmetry independent cluster cations 2 of about the same geometry. The cluster skeleton Au7Co can be described as fragment of an icosahedron formed by seven gold atoms with the Co atom in its center. The AuAu distances range from 274.8(3) to 332.6(3) pm, and the CoAu distances are 256.8(6) to 264.7(5) pm. The bonding in 1 and 2 is discussed." @default.
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- W2000804187 date "1994-02-01" @default.
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- W2000804187 title "Synthese und Struktur von [(Ph3PAu)6Co(CO)2](PF6) und [(Ph3PAu)7Co(CO)2](PF6)2" @default.
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- W2000804187 doi "https://doi.org/10.1002/zaac.19946200203" @default.
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