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The compound has idealized C 2h symmetry. Each metal centre is pseudo-octahedral. The compound is prepared by the reaction of rhodium trichloride trihydrate and pentamethylcyclopentadiene in hot methanol, from which the product precipitates: [1] 2 C 5 (CH 3) 5 H + 2 RhCl 3 (H 2 O) 3 → [(C 5 (CH 3) 5)RhCl 2] 2 + 2 HCl + 6 H 2 O
Reduction of [Cp*IrCl 2] 2 in the presence of CO affords [Cp*Ir(CO) 2], which can be decarbonylated to give the unsaturated derivative [Cp*Ir(CO)] 2. [3] Treatment of [Cp*IrCl 2] 2 with borohydride under an atmosphere of H 2 gives the iridium(V) derivative Cp*IrH 4. [Cp*IrCl 2] 2 is a precursor to catalysts for the asymmetric transfer ...
The molecular formula C 2 H 4 Br 2 (molar mass: 187.86 g/mol, exact mass: 185.8680 u) may refer to: 1,1-Dibromoethane (ethylidene dibromide)
A molecule that has carbon—heteroatom double bonds, such as a carbonyl group (C=O) or imine group (C=N), can undergo an addition reaction because its double-bond. An addition reaction is the reverse of an elimination reaction, in which one molecule divides into two or more molecules.
Calcium bromide is the name for compounds with the chemical formula Ca Br 2 (H 2 O) x. Individual compounds include the anhydrous material (x = 0), the hexahydrate (x = 6), and the rare dihydrate (x = 2). All are white powders that dissolve in water, and from these solutions crystallizes the hexahydrate.
Calcium peroxide or calcium dioxide is the inorganic compound with the formula CaO 2. It is the peroxide (O 2 2−) salt of Ca 2+. Commercial samples can be yellowish, but the pure compound is white. It is almost insoluble in water. [3]
In 1967 the group of George A. Olah obtained NMR spectra of tetramethylethylenebromonium ions by dissolving 2,3-dibromo-2,3-dimethylbutane in magic acid at −60 °C. [5] The spectrum for the corresponding fluorine compound on the other hand was consistent with a rapidly equilibrating pair of β-fluorocarbocations.
EuBr 3 + 1 / 2 H 2 → EuBr 2 + HBr 2 TaBr 4 500 °C → TaBr 3 + TaBr 5 Most of the bromides of the pre-transition metals (groups 1, 2, and 3, along with the lanthanides and actinides in the +2 and +3 oxidation states) are mostly ionic, while nonmetals tend to form covalent molecular bromides, as do metals in high oxidation states from ...