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(C4H4)NiBr2, also known as nickelocene, is a chemical compound consisting of a nickel atom coordinated to two cyclobutadiene ligands and two bromide ions. Cyclobutadiene is a cyclic hydrocarbon with the formula C4H4, and in (C4H4)NiBr2, it acts as a ligand, bonding to the central nickel atom. Nickelocene is an organometallic complex, which means it contains a metal atom bonded to carbon-based ligands. (C4H4)NiBr2 is of interest in organometallic chemistry and is used in various applications, including as a catalyst in chemical reactions. It is also a precursor in the synthesis of other nickel-containing compounds. Nickelocene is a yellow crystalline solid and is sensitive to air and moisture, requiring careful handling under an inert atmosphere.

80822-13-5

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80822-13-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 80822-13-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,8,2 and 2 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 80822-13:
(7*8)+(6*0)+(5*8)+(4*2)+(3*2)+(2*1)+(1*3)=115
115 % 10 = 5
So 80822-13-5 is a valid CAS Registry Number.

80822-13-5Downstream Products

80822-13-5Relevant academic research and scientific papers

NICKEL(II)-KOMPLEXE DES UNSUBSTITUIERTEN CYCLOBUTADIENS

Froehlich, Christian,Hoberg, Heinz

, p. 337 - 342 (2007/10/02)

cis- and trans-3,4-Dichlorocyclobutene (I) react with Ni(CO)4 and AlCl3 to give (C4H4)NiCl2 * AlCl3 (II), while the bromo- and iodo-substituted cyclobutenes (III) without AlCl3 yield the complexes (C4H4)NiX2 (IVa, X = Br; IVb, X = I).Properties of II and IV are discussed and the presence of a C4H4 ring attached to nickel is likely from the results obtained.

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