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Nickel(II) chloride (or just nickel chloride) is the chemical compound NiCl 2.The anhydrous salt is yellow, but the more familiar hydrate NiCl 2 ·6H 2 O is green. Nickel(II) chloride, in various forms, is the most important source of nickel for chemical synthesis.
The blue isomer is prepared by treating hydrated nickel chloride with triphenylphosphine in alcohols or glacial acetic acid: [1]. NiCl 2 •6H 2 O + 2 PPh 3 → NiCl 2 (PPh 3) 2 + 6 H 2 O ...
The Gmelin rare earths handbook lists 1522 °C and 1550 °C as two melting points given in the literature, the most recent reference [Handbook on the chemistry and physics of rare earths, vol.12 (1989)] is given with 1529 °C.
Dichlorobis(ethylenediamine)nickel(II) is the inorganic compound with the formula NiCl 2 (en) 2, where en = ethylenediamine.The formula is deceptive: the compound is the chloride salt of the coordination complex [Ni 2 Cl 2 (en) 4] 2+.
The melting point (or, rarely, liquefaction point) of a substance is the temperature at which it changes state from solid to liquid. At the melting point the solid and liquid phase exist in equilibrium. The melting point of a substance depends on pressure and is usually specified at a standard pressure such as 1 atmosphere or 100 kPa.
Dichloro[1,2-bis(diphenylphosphino)ethane]nickel is a coordination complex with the formula NiCl 2 (dppe); where dppe is the diphosphine 1,2-bis(diphenylphosphino)ethane.It is used as a reagent and as a catalyst. [1]
The yellow anhydrous form, NiSO 4, crystallizes in orthorhombic crystal system [2] and in standard pressure decomposes to NiO in temperatures above 640 °C, before reaching the melting point. [3] It melts only at high system pressure, using a constant volume method the melting point was found to be 1210 °C. [4]
This lists the character tables for the more common molecular point groups used in the study of molecular symmetry. These tables are based on the group-theoretical treatment of the symmetry operations present in common molecules, and are useful in molecular spectroscopy and quantum chemistry. Information regarding the use of the tables, as well ...