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The most common structure of WO 3 is monoclinic with space group P2 1 /n. [2] The pure compound is an electric insulator, but oxygen-deficient varieties, such as WO 2.90 = W 20 O 58, are dark blue to purple in color and conduct electricity. They can be prepared by combining the trioxide and the dioxide WO 2 at 1000 °C in vacuum. [4] [1]
[2] [3] Some older literature refers to the compound W 2 O 3 but as the atomic weight of tungsten was believed at the time to be 92 (i.e., approximately half the modern accepted value of 183.84) the compound actually being referred to was WO 3. [4] Reports about the compound date back to at least the 1970s, but only in as thin films or surfaces ...
Tungsten(IV) oxide is the chemical compound with the formula W O 2. The bronze-colored solid crystallizes in a monoclinic cell. [1] The rutile-like structure features distorted octahedral WO 6 centers with alternate short W–W bonds (248 pm). [1] Each tungsten center has the d 2 configuration, which gives the material a high electrical ...
A-Stoff (World War I): chloroacetone (tear gas) [2] A-Stoff (World War II): liquid oxygen (LOX) B-Stoff (short for Brennstoff, literally, "fuel"): the 75% ethanol / 25% water fuel used in the V-2 ballistic rocket [3] The word was also used for hydrazine, or a mixture of hydrazine in methyl alcohol, (used in the Messerschmitt Me 163 Komet rocket powered fighter aircraft).
The solid-state structure of WO 3 ·H 2 O consists of layers of octahedrally coordinated WO 5 (H 2 O) units where 4 vertices are shared. [2] The dihydrate has the same layer structure with the extra H 2 O molecule intercalated. [2] The monohydrate is a yellow solid and insoluble in water. The classical name for this acid is 'acid of wolfram'.
This is a list of common chemical compounds with chemical formulae and CAS numbers, ... Cs 2 WO 4: caesium orthotungstate: 13587-19-4 Cs 2 HPO 3: dicaesium phosphite:
Diphenylchloroarsine (DA) is the organoarsenic compound with the formula (C 6 H 5) 2 AsCl. It is highly toxic and was once used in chemical warfare. It is also an intermediate in the preparation of other organoarsenic compounds. The molecule consists of a pyramidal As(III) center attached to two phenyl rings and one chloride.
In chemistry, a tungstate is a compound that contains an oxyanion of tungsten or is a mixed oxide containing tungsten. The simplest tungstate ion is WO 2− 4 , "orthotungstate". [ 1 ] Many other tungstates belong to a large group of polyatomic ions that are termed polyoxometalates , ("POMs"), and specifically termed isopolyoxometalates as they ...