13569-70-5Relevant articles and documents
Crystal structures of Ni(AlCl4)2, Ni(GaCl 4)2 and Na[Ni(AlCl4)3]
Ke?ler, Ulrich,Müller, Rainhard
, p. 1052 - 1058 (2007)
The crystal structures of Ni(AlCl4)2, Ni(GaCl 4)2 and Na[Ni(AlCl4)3] were determined by single crystal X-ray structure analysis. Ni(AlCl4) 2 and Ni(GaCl4)2 are isotypic and crystallize in the Co(AlCl4)2 structure type (I2/c, a = 1276.40(9)/1268.48(7), b = 771.41(5)/757,74(3), c = 1145.47(8)/1154.34(7) pm, β = 92.067(3)/91.778(4)°, Z = 4), The structure contains chains of NiCl6 octahedra and AlCl4/GaCl4 tetrahedra linked by corners and edges. Na[Ni(AlCl4)3] represents a new structure type (P21/c, a = 1356.34(6), b = 1200.82(6), c = 1213.31(6) pm, β = 105.647(6)°, Z = 4). Its characteristic feature is the chiral [Ni(AlCl4)3]- anion which is found here for the first time. The tetrachloroaluminate ions serve as bidentate ligands leading to an octahedral coordination of the nickel atom.
Horner, S. M.,Collier, F. N.,Tyree, S. Y.
, p. 85 - 89 (1967)
Lardon, M.,Guenthard, H. H.
, p. 2010 - 2015 (1966)
Solid state metathesis reactions in various applications
Gibson, Katharina,Stroebele, Markus,Blaschkowski, Bjoern,Glaser, Jochen,Weisser, Martina,Srinivasan, Radhakrishnan,Kolb, Heinz-Juergen,Meyer, Hans-Juergen
, p. 1863 - 1870 (2008/10/08)
Solid state metathesis reactions have been studied in fused silica tubes, by differential thermal analysis, and by X-ray powder diffraction. A selection of reactions between metal (La, Nb, and Ni) chlorides and lithium nitride or lithium acetylide were investigated to get more insight into reaction pathways and intermediate reaction stages that may be adopted on course of the formation of metal nitrides or carbides. Intermediate compounds are considered to be important because they can control the reactivity of a system. Such compounds were traced by changing the molar ratios of reaction partners away from the salt-balanced binary metal nitride or carbide target compositions. New preparative perspectives are discovered when metal chlorides were reacted with lithium nitridoborate or lithium cyanamide. Due to their reductive nature towards several d-block metal chlorides, (BN2)3- and (CN2)2- react to form metals or metal nitrides plus X-ray amorphous BN, and probably C3N4. With lanthanum chloride they can react to form nitridoborates and nitridocarbonates. The metathesis reaction between lithium cyanamide and cyanuric chloride (C3N 3Cl3) instead of metal chloride was studied for the synthesis of C3N4.
Enthalpy of Formation of Niobium Tetrachloride
Bazhanova, L. M.,Efimov, M. E.,Medvedev, V. A.,Tsirel'nikov, V. I.
, p. 946 - 947 (2007/10/02)
The enthalpies of the reactions of NbCl5 (c), NbCl4 (c), NaNO3 (c), NaNO2 (sol., 48.6 H2O), HCl (sol., 17.1 H2O), and H2O (l) with a solution of 0.50 K2Cr2O7*0.454 HF*0.498 HCl*55.497 H2O (mole litre-1) have been determined in an LKB*8700 solution calorimeter with isothermal jacket at 298.15 K.From the results the standard enthalpy of formation ΔfH0 = -705.51 +/- 2.0 kJ mole-1 has been calculated.
