Coordination compounds with XeF2, AsF3 and HF as ligands to metal ions: a review of reaction systematics, Raman spectra and metal, fluoro-ligand polyhedra

Gold(I) and Mercury(II) Xenon Complexes

“…[9] ) In HF/AsF 5 the AsF 3 unit binds as a ligand to trivalent lanthanide cations, but in these species coordination takes place through a fluorine atom. [10] In contrast to PF 3 , however, AsF 3 is not protonated by HF/SbF 5 . [11] In agreement with this observation the first ionization energy of AsF 3 (13.0 eV) is higher by 0.72 eV than that of PF 3 (12.28 eV).…”

Ion Selective Electrode Determination of Free Versus Total Fluoride Ion in Simple and Fluoroligand Coordinated Hexafluoropnictate (PnF6−, Pn = P, As, Sb, Bi) Salts

“…on the composition of employed TISAB. As reported the rate of aqueous hydrolysis of hexafluoropnictate(V) ions is negligible for PF 6 − and AsF 6 − while SbF 6 − ion hydrolyses to [SbF 2 (OH) 4 ] − ion; Bi(V) oxidizes water and so we cannot make any further comparisons with the lighter pnictogens [16]. Hydrolysis of AsF 6 − ion was detected after suspending solid rare earth(III) fluoroarsenates(V) coordination compounds in water, a phenomenon that was explained with distortion of AsF 6 − ion in these salts [17] earlier indicated by spectroscopic data [3].…”

“…H 2 SO 4 , acidified to pH2-3 and diluted with water to the mark [16,18]. 1 ml of 50%(w/w) KOH was added to the samples of SbF 6 − or BiF 6 − compounds in the Erlenmeyer flask after reaction of the compounds with water. To this was slowly added 100 mg of Devarda's alloy (50% Cu, 45% Al, 5% Zn).…”

“…The amounts of PF 6 − and AsF 6 − were determined gravimetrically by precipitation with tetraphenylarsonium chloride [16]. The amounts of As III were determined potentiometrically by titration with KBrO 3 [19].…”

“…These compounds are interesting as independent compounds in their own right and because new approaches to the syntheses of these compounds had to be established. Such compounds can then be used as starting materials for the syntheses of coordination compounds with the novel fluoro ligands XeF 2 , AsF 3 and HF coordinated to the metal centre M [6][7][8].…”