Examples of 'dihalide' in a sentence
Meaning of "dihalide"
dihalide refers to a chemical compound containing two halogen atoms
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- Any halide containing two halogen atoms per molecule
How to use "dihalide" in a sentence
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dihalide
A denotes a dihalide radical and preferably represents.
Is the number of moles of tin dihalide produced.
The magnesium dihalide is preferably magnesium chloride.
Is the number of moles of dialkyltin dihalide produced.
Amorphous magnesium dihalide is thus produced in situ.
Most preferably the activator is an isobutyl aluminium dihalide.
A denotes a radical of a dihalide and preferably represents.
The product is a vicinal dihalide.
The magnesium dihalide carrier is preferably magnesium dichloride.
Bisphosphines can be produced from the reaction of a phosphine with a dihalide.
Preferably said magnesium dihalide is magnesium chloride.
Magnesium dihalide is used as a starting material for producing a carrier.
A particularly preferred chromium dihalide compound is chromium dichloride.
The preparations indicated above lead to the formation of activated magnesium dihalide.
A designates the residue of a dihalide radical and preferably represents.
See also
In some instances the base is added during the carbonyl dihalide addition.
The hydrocarbylaluminum dihalide catalyst may be added neat or in solution.
The reactions indicated above bring to the formation of a magnesium dihalide in active form.
The silicon dihalide gas molecules can be condensed at low temperatures.
It is important that the magnesium dihalide be substantially water free.
The process is adaptable to several spirocyclic rings by choosing the appropriate alkyl dihalide.
In addition a mixture of magnesium dihalide and a magnesium dialkoxide can be used.
The above mentioned reactions result in the formation of magnesium dihalide in active form.
The molar ratio of magnesium dihalide to alcohol is from one to ten.
The reaction medium is heated under reflux during the addition of the alkyl dihalide.
The magnesium dihalide can be obtained from several commercial sources.
Examples include the product of reacting an organic dihalide with a sodium disulfide solution.
Also specifically preferred is that the catalyst comprises a tetraarylphosphonium halide or a tetraarylphosphonium hydrogen dihalide.
The reaction between the xylylene dihalide and the bipyridyl proceeds at room temperature.
The invention relates to a soluble complex comprising a magnesium dihalide and an electron donor.
A vicinal dihalide having the structure,.
Preferably the catalyst component of the present invention comprises a titanium compound and a magnesium dihalide.
The titanium alkoxide and the magnesium dihalide can be combined in any suitable liquid.
The intermediate solutions obtained are further reacted with said at least one dicarboxylic acid dihalide.
In a preferred embodiment, the dihalide is a dibromide.
The found value is considered as surface área of the Mg dihalide.
Of these compounds, magnesium dihalide is preferable.
Examples of such compounds are trialkylaluminum, dialkylaluminum halide, alkylaluminum sesquihalide and alkylaluminum dihalide.
In another embodiment, the chromium dihalide is chromium dichloride.
The source of sulphur can be for example elemental sulphur, a sulphur monohalide or a sulphur dihalide.
Most preferably, said dicarboxylic acid dihalide is phthaloyl dichloride.
Preferably, the non-stereospecific solid catalyst component comprises a titanium compound and a magnesium dihalide.
The halogen in the vanadium dihalide is chlorine, bromine or iodine, or mixtures thereof.
Suitable halogen containing magnesium compounds include for example magnesium dihalides and magnesium dihalide complexes.
A process for preparing a metal dihalide coordination complex corresponding to the formula, wherein,.
Preferably, the organoaluminum compound is an alkylaluminum, an alkylaluminum dihalide or a dialkylaluminum halide.
Catalyst supported on magnesium dihalide in active form are well-known from the technical literature.
It is preferable in the claimed process, that said magnesium dihalide is magnesium dichloride.
Mixing of a titanocene dihalide and trimethylaluminum alone does not result in formation of component ( A ).
A process according to claim 9, characterised in that said magnesium dihalide is magnesium dichloride.
