Preparation of β-rhenium tetrachloride

Abstract

β-Rhenium tetrachloride has been prepared by three different methods. Infrared, magnetic, and X-ray powder diffraction data are reported.

β-Technetium Dichloride: Solid-State Modulated Structure, Electronic Structure, and Physical Properties

“…The thermal behavior of technetium chlorides differ from those of rhenium and are more similar to those of platinum. For rhenium, ReCl 4 disproportionates to ReCl 3 and ReCl 5 , the trichloride volatilizes as the Re 3 Cl 9 cluster and no decomposition has been reported. , Similar to technetium, platinum tetra- and trichloride decompose to the dichloride (β-PtCl 2 ) . The thermal behavior of technetium tetrabromide has recently been reported .…”

Technetium Tetrachloride Revisited: A Precursor to Lower-Valent Binary Technetium Chlorides

“…26,4 In contrast, ReCl 4 and β-MoCl 4 undergo disproportionation to the respective tri-and pentachloride. 31,32,45,46 Tungsten(IV) chloride also disproportionates, forming WCl 2 and WCl 5 . 47,30 In comparison to the surrounding elements, technetium displays unique thermal properties upon undergoing successive decomposition to the tri-and dichlorides.…”

“…Chlorination of tungsten metal yields WCl 6 , which can then be reduced with aluminum to form the tetrachloride . For rhenium, the direct chlorination of the metal results in a mixture of ReCl 5 and ReCl 6 . , Two phases have been identified for ReCl 4 : β and γ . The β phase, which is the only structurally characterized phase, was obtained via the reaction of ReCl 5 with either ReCl 3 or SbCl 3 .…”

Studies of β-Diketone Complexes of Rhenium. VIII. The Reaction of β-Diketones with Chloropentacarbonylrhenium(I), and the Preparation of Complexes of the Type Re(CO)4(dik), Re2(CO)6(dik)2, Re2(CO)6Cl2(dikH)2, Re(CO)3L(dik), and Re(CO)2(dik)L2

“…previously (8). As all samples were diamagnetic, or had very low paramagnetism, measurements were made only at 296 and 77 K. Corrections for the diamagnetism of the ligand were taken from Selwood (9) and F O B et al (10).…”