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(C4H4)NiI2, also known as nickel tetracarbonyl diiodide, is a coordination compound consisting of a nickel (Ni) atom coordinated to four carbon monoxide (CO) ligands and two iodide (I-) ligands. The compound has a square planar geometry around the nickel center, with the CO ligands occupying the equatorial positions and the iodide ligands in the axial positions. It is a yellow crystalline solid and is sensitive to light and heat, which can lead to decomposition. Nickel tetracarbonyl diiodide is an important intermediate in the synthesis of various nickel-containing compounds and has applications in organometallic chemistry and catalysis.

80834-04-4

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80834-04-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 80834-04-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,8,3 and 4 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 80834-04:
(7*8)+(6*0)+(5*8)+(4*3)+(3*4)+(2*0)+(1*4)=124
124 % 10 = 4
So 80834-04-4 is a valid CAS Registry Number.

80834-04-4Upstream product

80834-04-4Downstream Products

80834-04-4Relevant academic research and scientific papers

NICKEL(II)-KOMPLEXE DES UNSUBSTITUIERTEN CYCLOBUTADIENS

Froehlich, Christian,Hoberg, Heinz

, p. 337 - 342 (1981)

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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