Solubility of fluorocarbons in water as a key parameter determining fluorocarbon emulsion stability

The kinetics of particle size growth in emulsions of 14 fluorocarbons has been studied by means of photon correlation spectroscopy. It was assumed that Ostwald ripening is the mechanism of emulsion coarsening with time; solubility of fluorocarbons in water (about 10⁻⁶-10⁻¹⁰ml/ml) being the key parameter determining fluorocarbon emulsion stabilities. The solubilities of fluorocarbons in water were calculated from the Ostwald ripening kinetics data and a solubility-fluorocarbon structure relationship was established. In a homologous series of normal chain fluorocarbons the solubility in water decreased by a factor of 8.0 for each -CF₂ - group. For a given carbon number, ring formation and branching increased water solubility of the fluorocarbons. A correlation between fluorocarbon solubility in water and solvent cavity surface area was found which allows prediction of the fluorocarbon emulsion stability from the structure of the fluorocarbon.     

Reaction of boric acids of ferrocene with copper tetraphenylborate

Conclusions The reaction of copper tetraphenylborate with 1-(1-bromoferrocenyl)boric acid and ferrocenylboric acid results in the respective formation of phenylferrocene (together with a small amount of 1,1-diphenyl-ferrocene) and ferrocene (together with phenylferrocene and biferrocenyl).Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 11, pp. 2583–2584, November, 1971.     

Iron complexes of N-allylbenzotriazoles

Sodium benzotriazolide reacts with π-C₃H₅Fe(CO)₃I to give 1-N-allylbenzotriazoletricarbonyliron (I). The same product and the isomeric complex, 2-N-allylbenzotriazoletricarbonyliron (II), have been prepared independently, from the corresponding N-allylbenzotriazoles and Fe₂(CO)₉. The IR, ¹H NMR, and mass spectra of the complexes are reported. The structure of isomer I has been determined by X-ray diffraction. The crystals are monoclinic, P2₁/c, a = 10.65(1), b = 9.95(1), c = 12.90(1) Å, β = 113.69(7)°, d_calc = 1.39 g cm^?3, Z = 4.     

The reactivity of cyclohexadienyl(cyclopentadienyl)iron derivatives

Oxidation of exo-substituted (cyclohexadienyl)cyclopentadienyliron derivatives, exo-RC₆H₆FeC₅H₅ (R = C₂H₅, C₆H₅CH₂ or C₅H₅), by (Ph₃C)BF₄ or bromosuccinimide proceeds by either of two routes, exo-R abstraction or endoH abstraction. Mixtures of [C₆H₆FeC₅H₅]⁺ and [RC₆H₅FeC₅H₅]⁺ axe formed in the reactions. The tendency for R-abstraction rises along the series C₅H₅ C₂H₅ < C₆H₅CH₂. When heated, the compounds (arene H) FeC₅H₅ axe transformed to ferrocene.     

Reactions of triferrocenylchloromethane hydrochloride

Conclusions Triferrocenylchloromethane hydrochloride reacts with nucleophilic reagents (organomagnesium and-sodium compounds, aluminum lithium hydride, sodium methylate, sodium cyanide) to yield the corresponding triferrocenylmethane derivatives.     

Cleavage of Mn-Mn bond in dimeric manganese carbonyl by halides of group IVB elements as a method for synthesis of bimetallic complexes of type R4−nE[Mn(CO)5]n (E=Ge,Sn, or Pb)

Conclusions A study of the oxidative cleavage of the Mn-Mn bond in Mn₂(CO)₁₀ by halo-containing Ge, Sn, and Pb compounds disclosed that bimetallic complexes of type R_4–nE[Mn(CO)₅]_n are formed.Deceased.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 6, pp. 1427–1430, June, 1978.     

Organotungsten σ-derivatives of cymantrene

Conclusions Some organotungsten -derivatives of cymantrene, -C₅H₅ (CO)₃WR and -C₅H₅ (CO)₂(PPh₃)WR (R = C₅H₄Mn(CO)₃ and COC₅H₄,Mn(CO)₃).Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 10, pp. 2328–2330, October, 1977.     

1-(1'-Bromoferrocenyl)silver

Conclusions 1-(1'-bromoferrocenyl)silver was prepared, and some of its properties were investigated.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1827–1829, August, 1969.