Fluorides and fluoro acids. 12. Complex-anion homology and isomerism in the crystal structures of two potassium poly(hydrogen fluorides), KF.cntdot.2.cntdot.5HF and KF.cntdot.3HF

Cesium fluorohydrogenate, Cs(FH)2.3F

“…(FH) n F À anions in other salts have been characterized by several methods such as singlecrystal X-ray diffraction, IR spectroscopy and theoretical calculations [17][18][19][20][21]26,[30][31][32][33][34][35][36][37][38]. Abundance of the anionic species in fluorohydrogenate salts changes depending on the cationic species and HF composition n. EMIm(FH) 2.3 F which has a negligible HF dissociation pressure at room temperature (<10 À2 Torr) contains two anionic species, (FH) 2 F À and (FH) 3 F À , and does not contain detectable amount of free HF molecule [17][18][19].…”

Amine-Poly(Hydrogen Fluoride) Solid Complexes: New Studies of Formation, Crystal Structures, and Hn−1Fn− Ion Diversity

“…Copies of the data can be obtained free of charge on application to CCDC, 12 Union Road, Cambridge CB2 1EZ, UK (Fax: ( 44) 1223-336-033; e-mail: deposit@ccdc.cam.ac.uk). [6] , KF´2.5 HF [7] , Me 4 NF´2 HF [8] [(C 10 H 12 Se 4 ) 2 ]F´2 HF [9] Me 3 N´3 HF [#] , Et 3 N´3 HF [#] , Py´3 HF [2] [7] , NOF´3 HF [10] KF´2.5 HF [7] Me 4 NF´3 HF [8] H 2 O´4 HF [14] 3 IF 5´C sF´3 HF [11] K 3 BiCl 6´2 KCl´KF´3 HF [12] NH 3´4 HF [13] , Me 3 N´4 HF [#] Et 3 N´4 HF [#] , Py´4 HF [2] [15] , NOF´4 HF [10] Me 3 N´5 HF [#] NH 3´5 HF [13] n 6: [(FH) 2 À NH 3´8 HF [13] …”

Alkaline earth metal poly(hydrogen fluorides) hexafluoroarsenates(V) and hexafluorophosphate(V): M2(H2F3)(HF2)2(AF6) (M=Ca, A=As; M=Sr, A=As, P)

“…In the case of M 2 (H 2 F 3 )(HF 2 ) 2 (AF 6 [21]. The longer distances and smaller F1-F2-F1 angles are probably the consequence of the close packing in the described compounds.…”