16893-92-8Relevant articles and documents
Isolation and Structural Characterization of Eightfold Protonated Octacyanometalates [M(CNH)8]4+ (M=MoIV, WIV) from Superacids
Malischewski, Moritz,Marvaud, Valérie,Sellin, Malte
, (2020)
Octacyanometalates K4[Mo(CN)8] and K4[W(CN)8] are completely protonated in superacidic mixtures of anhydrous hydrogen fluoride and antimony pentafluoride. The resulting hydrogen isocyanide complexes [Mo(CNH)sub
In pursuit of the PO2+ cation. The reaction of KPO2F2 and SbF5 leads to an eight-membered antimony-oxygen-phosphorus-bridged ring
Schneider, Stefan,Vij, Ashwani,Sheehy, Jeffrey A.,Tham, Fook S.,Schroer, Thorsten,Christe, Karl O.
, p. 631 - 637 (2008/10/08)
The reaction of KPO2F2 with the strong Lewis acid SbF5 was studied as a potential pathway to the unknown PO2+ cation. The resulting product has the desired PO2SbF6 composition but consists of an eight-membered, antimony-oxygen-phosphorus-bridged ring that was characterized by vibrational and NMR spectroscopy, ab initio methods, and a single crystal x-ray diffraction study. The preferred formation of the ring and its mechanism are discussed. Wiley-VCH Verlag GmbH, 2001.
Synthesis of Au(II) fluoro complexes and their structural and magnetic properties
Elder, Scott H.,Lucier, George M.,Hollander, Frederick J.,Bartlett, Neil
, p. 1020 - 1026 (2007/10/03)
Gold at ~20°C with F2 in anhydrous hydrogen fluoride (aHF) acidified with SbF5 dissolves to a red solution from which orange Au(II)(SbF6)2 crystallizes on removal of volatiles. Au(SbF6)2 is triclinic with a = 5.300(1) A?, b = 5.438(1) A?, c = 8.768(2) A?, α = 76.872(3)°, β = 88.736(3)°, γ = 68. 109(3)°, V = 227.79(7) A?3, and Z = 1, space group P1. Each Au(II) atom, at 1, is at the center of an elongated octahedron of F ligands; the four F's of the approximately square AuF4 unit are at 2.09(2) A? x 2 A? and 2.15(2) A? x 2, each F provided by a different SbF6 species. The two long Au-F interatomic distances are at 2.64(2) A?. The SbF6 are grossly distorted in their interactions with the Au. A cis pair of F ligands of each SbF6, make close approach to two different gold atoms, stretching Sb-F to 1.99(2) and 1.94(2) A?. In each case the Sb-F distances trans to these stretched Sb-F bonds are short, being 1.85(2) and 1.84(2) A?, respectively. Magnetic susceptibility measurements show antiferromagnetic coupling with a susceptibility decrease below 13 K. Solvolysis of Au(II)(SbF6)2 in aHF is accompanied by disproportionation: 4Au(SbF6)2 → Au + Au3F8 + 8SbF5(solv). Fluorination, at ~20°C, of the solution of Au(SbF6)2, in SbF5 acidified aHF, precipitates red crystals of triclinic Au(II){SbF6{2Au(II){Au(III)F4}2 with a(o) = 5.2345(2) A?, b(o) = 8.1218(1) A?, c(o) = 10.5977(3) A?, α = 100.090(2)°, β = 100.327(2)°, γ = 104.877(2)°, V = 416.63(2) A?3, space group P1, and Z = 1. It is a simple paramagnet. The structure shows two different Au(II) environments, each approximately square-coordinated by F ligands, one being coordinated trans by an F ligand of each of two SbF6 and similarly by an F ligand from each of two Au(III)F4 species. The other Au(II) is approximately square-coordinated via bridging F ligands to four different Au(III)F4 species. Au(II){SbF6}2Au(II){Au(III)F4]2 with KAuF4 in aHF yields Au3F8 free of metallic gold, the simple paramagnetism of which indicates the formulation Au(II){Au(III)F4}2.
Formation and NMR Spectroscopic Characterization of the Fluorophosphonium Cations, PH4-nFn+ (n = 1-4)
Minkwitz, Rolf,Liedtke, Andreas
, p. 679 - 682 (2007/10/02)
The preparations of the salts PH3F+SbF6- and PHF3+Sb2F11- are reported.All fluorophosphonium cations PH4-nFn+ are characterized by multinuclear (1H, 19F, 31P) NMR spectroscopy.For n > 1 these salts are easily accessible by fluoride abstraction from fluorohydridophosphates(V).PH3F+SbF6-, however, is obtained in the reaction of PH3F2 with SbF5. - keywords: Fluorophosphonium Salts, Formation, NMR Spectra
