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The dihydrate NiCl 2 ·2H 2 O adopts a structure intermediate between the hexahydrate and the anhydrous forms. It consists of infinite chains of NiCl 2, wherein both chloride centers are bridging ligands. The trans sites on the octahedral centers occupied by aquo ligands. [10] A tetrahydrate NiCl 2 ·4H 2 O is also known.
Nickel(II) fluoride NiF 2 is yellow, crystallising in the rutile structure and can form a trihydrate, NiF 2 ·3H 2 O. [3] A tetrahydrate also exists. [4] Nickel chloride NiCl 2 is yellow, crystallising in the cadmium chloride structure. It can form a hexahydrate, NiCl 2 ·6H 2 O, a tetrahydrate NiCl 2 ·4H 2 O over 29 °C and a dihydrate, NiCl ...
Therapy can include the use of zinc supplements to reduce the duration of diarrhea in infants and children under the age of 5. [1] Use of oral rehydration therapy has been estimated to decrease the risk of death from diarrhea by up to 93%. [2] Side effects may include vomiting, high blood sodium, or high blood potassium. [1]
Clark's rule is a medical term referring to a mathematical formula used to calculate the proper dosage of medicine for children aged 2–17 based on the weight of the patient and the appropriate adult dose. [1] The formula was named after Cecil Belfield Clarke (1894–1970), a Barbadian physician who practiced throughout the UK, the West Indies ...
Zinc acetate is a component of some medicines, e.g., lozenges for treating the common cold. [1] Zinc acetate can also be used as a dietary supplement. [2] As an oral daily supplement it is used to inhibit the body's absorption of copper as part of the treatment for Wilson's disease. [3]
The compound can be prepared by treating nickel or nickel(II) carbonate with acetic acid: . NiCO 3 + 2 CH 3 CO 2 H + 3 H 2 O → Ni(CH 3 CO 2) 2 ·4 H 2 O + CO 2. The mint-green tetrahydrate has been shown by X-ray crystallography to adopt an octahedral structure, the central nickel centre being coordinated by four water molecules and two acetate ligands. [5]
Because the Ni 2+ ion resembles many other divalent metal ions, it can be substituted by them, or substitute for them in other oxalate compounds to form mixed oxalates where the proportions can vary continuously. For example, magnesium nickel oxalate dihydrate.
Nickel(II) bromide is the name for the inorganic compounds with the chemical formula NiBr 2 (H 2 O) x. The value of x can be 0 for the anhydrous material, as well as 2, 3, or 6 for the three known hydrate forms. The anhydrous material is a yellow-brown solid which dissolves in water to give blue-green hexahydrate (see picture).