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Ytterbium(III) Chloride
Ytterbium(III) chloride (Ytterbium, YbChlorine, Cl3) is an inorganic chemical compound. It reacts with NiCl2 to form a very effective Catalysis, catalyst for the Reductive dechlorination, reductive dehalogenation of aryl halides. It is poisonous if injected, and mildly toxic by ingestion. It is an experimental Teratology, teratogen, known to Irritation, irritate the skin and eyes. When heated to Chemical decomposition, decomposition it emits Toxicity, toxic fumes of Chloride, Cl−. History The synthesis of YbCl3 was first reported by Jan Hoogschagen in 1946. It is now a commercially available source of Yb3+ ions and therefore of significant chemical interest. Chemical properties The valence electron configuration of Yb+3 (from YbCl3) is 4''f''135''s''25''p''6, which has crucial implications for the chemical behaviour of Yb+3. Also, the size of Yb+3 governs its catalytic behaviour and biological applications. For example, while both Ce+3 and Yb+3 have a single unpaired ''f'' elec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monoclinic
In crystallography, the monoclinic crystal system is one of the seven crystal systems. A crystal system is described by three vectors. In the monoclinic system, the crystal is described by vectors of unequal lengths, as in the orthorhombic system. They form a parallelogram prism. Hence two pairs of vectors are perpendicular (meet at right angles), while the third pair makes an angle other than 90°. Bravais lattices Two monoclinic Bravais lattices exist: the primitive monoclinic and the base-centered monoclinic. For the base-centered monoclinic lattice, the primitive cell has the shape of an oblique rhombic prism;See , row mC, column Primitive, where the cell parameters are given as a1 = a2, α = β it can be constructed because the two-dimensional centered rectangular base layer can also be described with primitive rhombic axes. Note that the length a of the primitive cell below equals \frac \sqrt of the conventional cell above. Crystal classes The table below org ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
