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The chemical compound "[Rh(norbornadiene)(Ph2P(CH2)4PPh2)]+" is a rhodium-based complex with a norbornadiene ligand and a bidentate phosphine ligand, Ph2P(CH2)4PPh2. Rhodium, a transition metal, is central to the complex, and norbornadiene, a bicyclic hydrocarbon, acts as a cyclopentadienyl-type ligand, providing stability through π-back bonding. The bidentate phosphine ligand, Ph2P(CH2)4PPh2, features two phenyl groups attached to a central phosphorus atom, which is connected to another phosphorus atom through a four-carbon chain. This ligand offers a chelating effect, enhancing the stability of the complex. The overall structure is a cationic species, indicated by the "+1" charge, suggesting it readily forms a bond with an anion to achieve electrical neutrality. This complex is of interest in organometallic chemistry and catalysis due to its unique electronic properties and potential applications in various chemical transformations.

71264-70-5

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71264-70-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71264-70-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,2,6 and 4 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 71264-70:
(7*7)+(6*1)+(5*2)+(4*6)+(3*4)+(2*7)+(1*0)=115
115 % 10 = 5
So 71264-70-5 is a valid CAS Registry Number.

71264-70-5Downstream Products

71264-70-5Relevant academic research and scientific papers

Stereoselective living polymerization of phenylacetylene promoted by rhodium catalysts with bidentate phosphines

Falcon, Michele,Farnetti, Erica,Marsich, Nazario

, p. 187 - 193 (2007/10/03)

Polymerization of phenylacetylene to give highly stereoregular cis-transoid polyphenylacetylene is accomplished by use of [Rh(nbd)(OMe)]2 (nbd=norbornadiene) and Ph2P(CH2)xPPh2 (x=2, dppe; x=3, dppp; x=4, dppb). The catalytic system employing the ligand dppb promotes formation of polymer products with low polydispersities. The polymerization is of living nature, as proved by the dependence of polymer molecular weight on conversion and on initial monomer concentration, with molecular weight distributions always maintained within a narrow range. NMR studies of the catalytic system provide information on the rhodium chemistry involved, as well as useful means of comparison to other rhodium-phosphine catalytic systems.

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