R. Minkwitz et al., DIHYDROXYCARBENIUMHEXAFLUOROMETALLATES - SYNTHESIS, SPECTROSCOPIC CHARACTERIZATION, AND CRYSTAL-STRUCTURE OF HC(OH)(2)(ASF6-)-AS-+, Zeitschrift fur anorganische und allgemeine Chemie, 622(8), 1996, pp. 1404-1410
Citations number
34
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Zeitschrift fur anorganische und allgemeine Chemie
The preparation of HC(OH)(2)(+) MF(6)(-) (M = As, Sb) by protonation o
f HCOOH in the superacid systems HF/MF(5) is reported. The very hydrol
ysable and thermolabile salts are characterized by vibrational and NMR
spectroscopic methods, Under inert conditions they are stable at -40
degrees C for some weeks. HC(OH)(2)(AsF6-)-As-+ crystallizes in the or
thorhombic space group Pbca (No. 61) with a = 965.8(1), b = 1582.20(16
), c = 766.40(8) pm with eight formula units per unit cell.