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- W1993024230 abstract "Die Titelverbindung entsteht in langsamer Reaktion aus PPh4[OsNCl4] und Natriumoxalat in Gegenwart von 15-Krone-5 in siedendem Dichlormethan. Die tiefvioletten Kristalle wurden durch eine rontgenographische Strukturanalyse charakterisiert. Raumgruppe P21/c, Z = 4, Strukturlosung mit 4 769 beobachteten unabhangigen Reflexen, R = 0,035. Gitterkonstanten bei –80°C: a = 1 931,4; b = 1 178,7; c = 1 764,1 pm; β = 99,39°. Die Struktur besteht aus PPh4+-Ionen und Ionenpaaren {Na(15-Krone-5)[OsNCl3(C2O4)]}−, in denen das Osmiumatom verzerrt oktaedrisch von einem terminalen Nitridoliganden, von drei Chloratomen und von zwei Sauerstoffatomen der Oxalatogruppe koordiniert ist. Die beiden ubrigen O-Atome der Oxalatogruppe sind mit dem Natriumion koordiniert, so das dieses zusammen mit den Sauerstoffatomen des Kronenethers die Koordinationszahl sieben erreicht.Synthesis and Crystal Structure of the Nitrido Oxalato Osmate PPh4{Na(15-Crown-5)[OsNCl3(C2O4)]}The title compound has been prepared by slow reaction of PPh4[OsNCl4] with sodium oxalate in boiling dichloromethane in the presence of 15-crown-5, forming violet crystals, which were characterized by an X-ray structure determination. Space group P21/c, Z = 4, 4 769 observed unique reflections, R = 0.035. Lattice dimensions at –80°C: a = 1 931.4, b = 1 178.7, c = 1 764.1 pm, β = 99.39°. The structure consists of PPh4+ ions and ion pairs {Na(15-crown-5)[OsNCl3(C2O4)]}−, in which the osmium atom is distortedly octahedrally coordinated by the nitrido ligand, by three chlorine atoms, and by two oxygen atoms of the oxalato group. The remaining oxygen atoms of the oxalato ligand are coordinated to the sodium atom, which, together with the five oxygen atoms of the crown ether molecule, gets coordination number seven." @default.
- W1993024230 created "2016-06-24" @default.
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- W1993024230 date "1993-08-01" @default.
- W1993024230 modified "2023-09-26" @default.
- W1993024230 title "Synthese und Kristallstruktur des Nitrido-Oxalato-Osmats PPh4{Na(15-Krone-5)[OsNCl3(C2O4)]}" @default.
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- W1993024230 doi "https://doi.org/10.1002/zaac.19936190815" @default.
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