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Tris(η5-cyclopentadienylnickel)methane, also known as nickelocene, is a chemical compound with the formula (C5H5)3NiCH3. It is a derivative of nickelocene, where one of the cyclopentadienyl rings is replaced by a methyl group. This organometallic compound features a nickel atom coordinated to three cyclopentadienyl ligands and one methyl group, forming a square planar geometry around the metal center. Nickelocene is an important precursor in the synthesis of various nickel-containing compounds and has applications in homogeneous catalysis, particularly in the polymerization of olefins and the production of carbon-carbon coupling reactions. The compound is air-sensitive and must be handled under an inert atmosphere to prevent oxidation.

84756-00-3

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84756-00-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 84756-00-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,7,5 and 6 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 84756-00:
(7*8)+(6*4)+(5*7)+(4*5)+(3*6)+(2*0)+(1*0)=153
153 % 10 = 3
So 84756-00-3 is a valid CAS Registry Number.

84756-00-3Downstream Products

84756-00-3Relevant academic research and scientific papers

THERMAL DECOMPOSITION OF η5-CYCLOPENTADIENYL-η2-PROPENEALKYLNICKEL COMPLEXES

Pasynkiewicz, S.,Lehmkuhl, H.

, p. 189 - 200 (1985)

Thermolysis of compounds of the type CpNiR (η2-propene) (R=CH3 (1), CD3 (2), CH2CH3 (3), CH2CH2CH3 (4) and CH2SiMe3 (5)) was studied.The methyl complex 1 gives mainly methane, ethane and (CpNi)3CH.Toluene-d8 has no effect on the composition of the gaseous products and does not yield gases containing deuterium.In the CD3 complex 2 a H-D exchange reaction between the complexed propene and the CD3 group takes place.Decomposition of the trimethylsilylmethyl complex 5 gave tetramethylsilane.The complexes 3 and 4 containing a β-hydrogen atom, decompose via a β-elimination reaction giving the corresponding olefin.The unstable formed in the reaction reacts with giving the corresponding alkane and a mixture of non-isolated cyclopentadienylnickel clusters.The complexes studied undergo insertion of the coordinated olefin into the Ni-C ?-bond, which results in the formation of higher hydrocarbons.

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