- TiF2: Linear or bent?
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Calling nonlinearity into question: When Ti atoms are isolated in fluorine-doped argon matrices, TiF4, TiF3, TiF 2, and TiF are identified by their IR spectra. The Ti isotope pattern observed for the ν3 mode of TiF2 is indistinguishable from that of a linear geometry. Therefore, there is now no reliable evidence for the nonlinearity of any 3d transition-metal difluorides or dichlorides. (Chemical Equation Presented)
- Wilson, Antony V.,Roberts, Alexander J.,Young, Nigel A.
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- Preparation, crystal structure, and magnetic properties of β-Li3TiF6 = Li2[4]Li7[6](TiF 6)(TiF6)2 - A double fluoride?
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Purple colored single crystals of the β-modification of Li3TiF6 have been prepared by heating an appropriate mixture of LiF and TiF3 at 820°C under an argon atmosphere. β-Li3TiF6 crystallizes in C2/c with a = 14.452(2) A, b = 8.798(1) A, c = 10.113(1) A and β = 96.30(1)°. The structure is isotypic to β-Li3VF6 and contains isolated compressed TiF6 octahedra (dTi-F = 1.91-2.01 A). Magnetic properties of β-Li3TiF6 were studied and discussed. Band structure calculations and calculations of the Madelung part of the lattice energy, MAPLE, were performed to discuss the chemical bonding. Johann Ambrosius Barth 1996.
- Tyagi, Avesh K.,Poettgen, Rainer,Koehler, Juergen
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- Formation and calculations of the simple terminal triplet pnictinidene molecules n÷MF3, P÷MF3, and As÷MF3 (M = Ti, Zr, Hf)
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Laser-ablated Ti, Zr, and Hf atoms react with NF3, PF 3, or AsF3 to produce triplet state terminal pnictinidene N÷MF3, P÷MF3, or As÷MF3 molecules, which are trapped in an argon matrix. Prod
- Wang, Xuefeng,Lyon, Jonathan T.,Andrews, Lester
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p. 6297 - 6302
(2009/12/04)
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- Electron deficient carbon-titanium triple bonds: Formation of triplet XC÷TiX3 methylidyne complexes
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Laser-ablated titanium atoms react with CX4 (X = F and Cl) to produce triplet state XC÷TiX3 complexes trapped in an argon matrix. Products are identified by their infrared spectra and comparison to theoretically predicted vibrations.
- Lyon, Jonathan T.,Andrews, Lester
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p. 9858 - 9863
(2008/10/09)
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- Synthesis, structure, and magnetic properties of compounds NaMIIZr2F11 (MII = Ti, V, Cu) and a notice on NaPdZr2F11
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By synthesizing NaTiZr2F11 in form of red single crystals, it was possible to obtain a complex fluoride with Ti2+ for the first time. It crystallizes like the analogous greenish blue vanadium compound isotypic to AgPdZr2F11 [1] monoclinic, spacegroup C2/m-C2h3 (No. 12) with a = 918.0/911.5 pm, b = 682.6/675.7 pm, c = 780.8/776.6 pm, β = 116.2/116.2° and Z = 2. Colourless NaCuZr2F11 however crystallizes as a result of the Jahn-Teller distortion of Cu2+ triclinic (space group P1-Ci1 (No. 2), a = 552.7 pm, b = 568.2 pm, c = 768.0 pm, α = 111.0°, β = 97.4°, γ = 106.4°) and is - as expected - isotypic to NaAgZr2F11 [1]. Johann Ambrosius Earth 1996.
- Bialowons,Müller
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p. 1187 - 1194
(2008/10/09)
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- Thermodynamic Properties of Solid Titanium Trifluoride
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By using the e.m.f. method with a solid electrolyte in the cell Ti, TiF3(CaF2)Al,AlF3 at 800 - 900 K we have determined the thermodynamic properties of crystalline TiF3: ΔHof,298.15=337.0 +/- 1.3 kcal mole-1, ΔGof, 298.15=-319.0 +/- 1.4 kcal mole-1, and So298.15=19.8 +/- 1.6 cal mole-1 K-1.A critical review of the thermodynamic parameters of TiF3 obtained from heterogeneous equilibrium data, which are found in standard tabulations, shows that the results of the e.m.f. method are the more reliable and can be recommended with a high level of confidence.
- Rezukhina, T. N.,Gorshkova, T. I.,Tsvetkov, A. A.
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p. 1001 - 1004
(2007/10/02)
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