Pentafluorides physical properties

The compounds phosphoms trifluoride [7783-55-3] PP35 phosphoms pentafluoride [7647-19-0] PP55 phosphoms oxyfluoride [13478-20-17, POF and phosphoms thiofluoride [2404-52-6] were prepared prior to 1900. The most widely studied of these are PF and PF. Physical properties are... 

Arsenic Halides. Arsenic forms a complete series of trihaUdes, but arsenic pentafluoride is the only well-known simple pentahaUde. AH of the arsenic haUdes, the physical properties of which are given in Table 2, are covalent compounds that hydrolyze in the presence of water. The trihaUdes form pyramidal molecules similar to the trivalent phosphoms analogues and may be prepared by direct combination of the elements. 

Bismuthonium ylides, 4 34 Bismuth(III) oxide, 4 23-24 Bismuth oxide(l l), 4 23 Bismuth oxide(l 2), 4 23 Bismuth oxide(2 4), 4 23 Bismuth oxide(3 5), 4 23 Bismuth oxide(4 9), 4 23 Bismuth oxide halides, 4 23 Bismuth oxides, 4 23-24 Bismuth oxybromide, 4 23 Bismuth oxychloride, 4 23 physical properties of, 4 20t pigment used in makeups, 7 836t Bismuth oxyfluoride, 4 23 Bismuth oxyiodide, 4 23 Bismuth pentafluoride, 4 22 physical properties of, 4 20t Bismuth phosphate, 4 25... 

NQR, 22 216 olefin complexes of, 4 85 in organogermanium compounds, 27 141,143 oxyfluoride, properties of, 11 29 pentacarbonyl dimets of sulfur oxydifluoride imide, 19 203-205 pentafluoride, structure, 27 102 peroxides, 6 325-326 phthalocyanine, 7 54 physical properties of, 11 18 polysulfide complexes, 31 100, 102 envelope conformation, 31 115 synthesis, 31 103-104 [Pt[15]aneS5) f, 35 75, 77 reaction with fluorinated peroxides, 16 120 salts, lattice energy and thermochemistry, 22 52-56... 

These compounds and some of their important physical properties are listed in Table 13-9. The preparations of C1F and BrF have already been mentioned. Chlorine trifluoride may be prepared by direct combination of the elements at 200 to 300°C and is available commercially. It is purified by converting it into KC1F4 by the action of KF and thermally decomposing the salt at 130 to 150°C. Chlorine pentafluoride (C1F5) can be made efficiently either by interaction of F2 with C1F3 or by the reaction ... 

The Preparation and Some Physical Properties of Osmium Oxide Pentafluoride, OsOF ... 

The oxide pentafluoride has been prepared and a preliminary report has been given. Its crystal and molecular structure is presented in the following paper and its preparation and some physical properties are given below. No evidence for the dioxide tetrafluoride has been obtained. 

The 1 1 chlorine trifluoride-platinum pentafluoride adduct, m. p. I7l , and the 1 1 iodine pentafluoride adduct, m. p. 140° resemble, in their physical properties, the selenium tetrafluoride adducts of osmium pentafluoride (SeF4,OsFg, m. p. 158°) and iridium pentafluoride (SeF. IrFg, m. p. 133°). They are probably bifluorine-bridged monomers ... 

Although a number of complex fluorides of quinquevalent iridium, (e.g. KIrF,) are known, previous attempts to establish the simple fluoride have failed. The absence of a pentafluoride of iridium has become increasingly anomalous as the pentafluorides of the neighbouring elements, rhenium, osmium, and platinum have been prepared. Previous work - indicated that reactions which might have yielded the pentafluoride gave the tetrafluoride instead. The physical properties of this tetrafluoride. (m.p. 106—107 b.p. > 300 ), however, resembled those of a pentafluoride or oxide tetrafluoride. This indicated that iridium tetrafluoride differed structurally from its neighbouring tetrafluorides. 

Table 2 gives some of the physical properties of the known pentafluorides. Iridium pentafluoride is isomorphous and nearly isodimensional with ruthenium pentafluoride and presumably has the nonlinear fluorine-bridged tetrameric molecular structure, reported by Holloway, Peacock, and Small for that fluoride. In this arrangement the... 

This polymer has excellent environmental and thermal stability in their neutral and doped states [100, 101] exhibiting optical properties and conductivity values up to 600 S cm in the doped form [102]. Polythiophene presents poor solubility in most organic solvents, except in mixtures such of arsenic trifluoride/pentafluoride which limits its applications. However, it has been reported that the incorporation of a long flexible alkyl side chain on the 3-position of the thiophene ring produces a soluble polymer in common organic solvents without altering the chemical and physical properties of the polymer [103]. 

The most universal method for the synthesis of tantalum and niobium fluoride compounds is based on direct interaction between their pentafluorides, TaF5 or NbFs, and fluorides of other metals. Some physical-chemical properties of these compounds are presented in Table 8 [71, 72]. 

Direct halogenation of metallic bismuth yields bismuth pentafluoride in the case of fluorine, the corresponding bismuth trihalides for the other halogens. Reaction of bismuth trioxide with aqueous HF, HC1, or HBr yields the corresponding bismuth trihalide. Physical and thermochemical properties of the more important bismuth halides appear in Table 2. 

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