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Reaction of GeF 4 with fluoride sources produces GeF 5 − anions with octahedral coordination around Ge atom due to polymerization. [6] The structural characterization of a discrete trigonal bipyramidal GeF 5 − anion was achieved by a "naked" fluoride reagent 1,3-bis(2,6-diisopropylphenyl)imidazolium fluoride. [7]
GDP remains bound to the inactive GTPase until a GEF binds and stimulates its release. [3] The localization of GEFs can determine where in the cell a particular GTPase will be active. For example, the Ran GEF, RCC1, is present in the nucleus while the Ran GAP is present in the cytosol, modulating nuclear import and export of proteins. [8]
Under normal conditions GeI 4 is a solid, GeF 4 a gas and the others volatile liquids. For example, germanium tetrachloride, GeCl 4, is obtained as a colorless fuming liquid boiling at 83.1 °C by heating the metal with chlorine. [4] All the tetrahalides are readily hydrolyzed to hydrated germanium dioxide. [4]
Potassium hexafluoroantimonate can be prepared by reacting potassium pyroantimonate K 2 H 2 Sb 2 O 7 with hydrogen fluoride or by treating the product of the reaction of a mixture of solid antimony(III) oxide and potassium hydroxide with hydrogen peroxide solution (30%) with hydrochloric acid (48%). [3]
Germanium tetrafluoride, GeF 4, a colorless molecular gas Index of chemical compounds with the same name This set index article lists chemical compounds articles associated with the same name.
A notable derivative of GeCl 4 is germanium dioxide.In the manufacture of optical fibers, silicon tetrachloride, SiCl 4, and germanium tetrachloride, GeCl 4, are introduced with oxygen into a hollow glass preform, which is carefully heated to allow for oxidation of the reagents to their respective oxides and formation of a glass mixture.
Reaction of iodine heptafluoride with water: [1] [2] IF 7 + H 2 O → IOF 5 + 2 HF. Reaction of iodine heptafluoride with silicon dioxide: [3] [4] 2 IF 7 + SiO 2 → ...
Cerium tetrafluoride, CeF 4; Cobalt tetrafluoride, CoF 4; Curium tetrafluoride, CmF 4; Diboron tetrafluoride, B 2 F 4, a colorless gas; Dinitrogen tetrafluoride, N 2 F 4 (Tetrafluorohydrazine) Einsteinium tetrafluoride, EsF 4; Germanium tetrafluoride, GeF 4; Hafnium tetrafluoride, HfF 4; Iridium tetrafluoride, IrF 4; Iron tetrafluoride, FeF 4 ...