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220098-86-2

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220098-86-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 220098-86-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,0,9 and 8 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 220098-86:
(8*2)+(7*2)+(6*0)+(5*0)+(4*9)+(3*8)+(2*8)+(1*6)=112
112 % 10 = 2
So 220098-86-2 is a valid CAS Registry Number.

220098-86-2Downstream Products

220098-86-2Relevant articles and documents

Phosphorus-bridged ansa-metallocene complexes of titanium, zirconium, and hafnium: The syntheses and structures of [PhP(C5Me4)2]MX2 and [Ph(E)P(C5Me4)2]MX2 (E = O, S, Se) derivatives

Shin, Jun Ho,Hascall, Tony,Parkin, Gerard

, p. 6 - 9 (2008/10/08)

A series of phosphorus-bridged ansa-metallocene complexes of titanium, zirconium, and hafnium, [PhP(C5Me4)2]MX2 and [Ph(E)P(C5Me4)2]MX2 (X = Cl, Me, CO, (Se3)0.5, (Te3)0.5; E = O, S, Se), has been synthesized. Structural characterization by X-ray diffraction indicates that, in comparison to their non-ansa counterparts (C5Me5)2MX2, the cyclopentadienyl groups in phosphorus-bridged complexes are displaced from symmetric η5-coordination toward η3-coordination. Such η3,η3-coordination creates more electrophilic metal centers than those in their permethylcyclopentadienyl counterparts, as judged by the v(CO) stretching frequencies of the zirconium dicarbonyl complexes Cp*2Zr(CO)2 (1946 and 1853 cm-1) and [PhP(C5Me4)2]Zr(CO)2 (1959 and 1874 cm-1).

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