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1310549-43-9

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1310549-43-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1310549-43-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,1,0,5,4 and 9 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1310549-43:
(9*1)+(8*3)+(7*1)+(6*0)+(5*5)+(4*4)+(3*9)+(2*4)+(1*3)=119
119 % 10 = 9
So 1310549-43-9 is a valid CAS Registry Number.

1310549-43-9Downstream Products

1310549-43-9Relevant articles and documents

Highly trans-1,4 selective polymerization of 1,3-butadiene initiated by iron(III) bis(imino)pyridyl complexes

Gong, Dirong,Jia, Xiaoyu,Wang, Baolin,Wang, Feng,Zhang, Chunyu,Zhang, Xuequan,Jiang, Liansheng,Dong, Weiming

, p. 47 - 53 (2011/08/22)

A series of 2,6-bis(imino)pyridyl iron(III) complexes of the general formula [2,6-(ArNCMe)2C5H3N]FeCl3 (Ar = -C6H5, 3a; 2-MeC6H4, 3b; 2-EtC6H4, 3c; 2-iPrC6H4, 3d; cyclohexyl, 3e; 4-MeC6H4, 3f; 4-iPrC 6H4, 3g; 4-FC6H4, 3h and 4-CF 3C6H4, 3i), activated by alkylaluminum, MAO or MMAO, have been investigated in 1,3-butadiene polymerization. Iron(III) complex (3a), with the least steric hindrance around the metal center, gives polymer up to 99% in yield in 4 h (butadiene to iron ratio = 1000), and trans-1,4 selectivity about 94.7% at room temperature in toluene, while those (3b-3d) bearing alkyl substituents at the 2-position of each N-aryl ring exhibit much lower catalytic activity and tunable trans-1,4 selectivity. Introduction of an alkyl group at the 4-position (para-position, 3f and 3g) exerts a slightly beneficial effect on the trans-1,4 selectivity, while electronegative groups at the same position (3h and 3i) affect negatively on the activity. The effects of temperature, types of cocatalyst and Al/Fe molar ratio on the polymerization behavior are investigated. More importantly, a mechanism for forming trans-1,4 structure is also proposed. Crown Copyright

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