Lanthanum trichloride

The chemistry of lanthanide nitridoborates was developed by the more flexible and more efficient solid-state metathesis route by using nitridoborate salts and a lanthanide trichloride, at reaction temperatures as low as 600 °C. This type of reaction has been previously established and studied in some detail for reactions, such as the synthesis of lanthanide nitrides (LnN). Following this concept, lanthanum nitridoborates are obtained from reactions of lanthanum trichloride and lithium nitridoborate (or calcium nitridoborate), performed in a salt-balanced manner with respect to the formation of the co-produced liCl ... 

An extreme example of the measurement of solution enthalpies is provided by that of lanthanum trichloride in molten potassium chloride. The value reported, which refers to infinite dilution, is - 20.8 kcal mol-1 (-87.0 kJ mol-1), at 890°C (223). This value is comparable with those for dissolution in lower alcohols at normal temperatures. 

An interesting class of homoleptic lanthanide complexes has become available through the use of heteroallylic diphosphinomethanide ligands. The first member of the series was the lanthanum derivative, [CH(PPh2)2]3La (59c), which was characterized by X-ray crystallography (Fig. 19) [74]. The preparation of 59c involved treatment of anhydrous lanthanum trichloride with the potassium salt of the ligand ... 

The electronic structure and chemical bonding in the 15-crown-5 complex of lanthanum trichloride having a coordination number of 8 has been studied. The molecular structure of LaCl3(15-crown-5) and the charge distribution of the complex, ligand and metal chloride are shown in Figs 5.23 and 5.24, respectively. 

The electrodeposition of lanthanum. La, has been attempted in neutral and acidic EMICI-AICI3 ionic liquids [70, 71]. Lanthanum trichloride, LaCl3, is soluble in the acidic ionic liquid. The solubility of LaCl3 in the acidic ionic liquid containing AICI3 at 66.7 mol% is reported as 45 mmol kg at 25°C. The deposition of metallic La is not conhrmed, while the reduction of a trivalent lanthanum species is suggested in the presence of SOCI2. The electrodeposition of Al-La alloys has been also examined in the acidic ionic liquid where the content of La in the Al-La alloys is less than 0.1 at%. 

Lanthanum trichloride heptahydrate Aldrich Lanthanum chloride heptahydrate (8) Lanthanum chloride, heptahydrate (9) (10025-84-0)... 

The analysis of crystal-field components has remained at the single-particle level introduced by Bethe ( ). Crystal-field parameters for the actinide ions in lanthanum trichloride are shown in Table III. They are approximately twice as large as the values found for the lanthanides. Although the values... 

Table I. Free-Ion Parameters for Trivalent Actinide Ions in Lanthanum Trichloride. Units are cm-- -.

CCRIS 6887 EINECS 233-237-5 Lanthanum chloride Lanthanum chloride (LaCl3) Lanthanum chloride, anhydrous Lanthanum trichloride Lanthanum(lll) chloride. Anhydrous trichloride used to prepare the rare-earth metal. Solid mp = 860° bp 1000°, Atomergic Chemetals Cerac Spectrum Chem. Manufacturing. 

The optical spectra of in lanthanum trichloride (LaCh) are probably the most completely studied of those belonging to any host material. Dieke (1968) gives an excellent review of the experimental data and results of its analysis as of 1968 the results since 1969 have been summarized by Crosswhite (1977). The energy levels of the entire R series resulting from the experimental and theoretical analysis of the spectra of these ions in Lads have been presented by Dieke and coworkers at Johns Hopkins University in the form of a chart. These charts (Dieke and Crosswhite, 1963), Dieke Charts , have been invaluable in the analysis of the spectra of rare-earth ions in new host materials and have been practically a necessity in the technological application of rare-earth ions to lasers. The hygroscopic nature (Spedding and Daane, 1961) of LaCh has hindered the application of this material to practical devices such as lasers or quantum counters. 

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