Structures of Complex Fluorides. Potassium Hexafluogermanate and Ammonium Hexafluogermanate

The crystal structure of hydrogen fluoride

“…1) perhaps provides some support for this conclusion, for the hydrogen.like bulges occurs in the correct position * Although 2.7 A (Pauling, 1948, p. 189) is the proper F..-F distance in primarily ionic crystals, the distance of 3"0 /~ is more consistent with our present values in HF, and with recent more reliable values in less dominantly ionic or molecular crystals. Some of these values are 3.09 • in KHFa (Helmholz & Rogers, 1939), 3-11 /~ in K~GeF e (Hoard & Vincent, 1939), 3"0 A in NHaBF a (Hoard, Geller & Cashin, 1951), and 3.03 A in SiF 4 (Atoji & Lipscomb, 1954).…”

Crystal chemical studies of the 5f-series of elements. II. The crystal structure of Cs2PuCl6

“…The deduced structure is of the K2GeF6-type (Hoard & Vincent, 1939). Each plutonium atom is bonded to six chlorine atoms at the corners of a nearly perfect octahedron.…”

Refinement of the crystal structure of diammonium hexafluorostannate( IV), (NH4)2SnFi

“…The structure is now determined from single crystal data. (NH4hSnF6 crystallizes isotypic to (NH^GeFö [2] and (NH4)2PbFö [3]. The crystal structure contains isolated [SnF6] 2~ octahedra (</(Sn-F) = 1.955(4) A) and NH 4 + ions.…”

“…The crystal structure contains isolated [SnF6] 2~ octahedra (</(Sn-F) = 1.955(4) A) and NH 4 + ions. (2) 0.014(1) 0.042 (6) i/n/2 0 -0.0069(9) 0 0 2Um 0…”