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402498-87-7

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402498-87-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 402498-87-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,2,4,9 and 8 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 402498-87:
(8*4)+(7*0)+(6*2)+(5*4)+(4*9)+(3*8)+(2*8)+(1*7)=147
147 % 10 = 7
So 402498-87-7 is a valid CAS Registry Number.

402498-87-7Downstream Products

402498-87-7Relevant articles and documents

Syntheses and reactivities of bisaryloxo lanthanide chlorides and crystal structures of [Ln(ArO)2Cl(THF)2]·(MePh) (Ln = Er, Yb) and [Sm(ArO)2(THF)3]·(MePh) (ArO = 2,6-di-tert-butyl-4-methylphenoxo)

Yao, Ying-Ming,Shen, Qi,Zhang, Yue,Xue, Ming-Qiang,Sun, Jie

, p. 3201 - 3208 (2008/10/08)

Four bisaryloxo lanthanide chlorides Ln(ArO)2Cl(THF)2 (Ln = Sm (1), Er (2), Yb (3), Y (4)) (ArO = 2,6-di-tert-butyl-4-methylphenoxo) were synthesized by the reaction of anhydrous LnCl3 with 2 equiv. of NaOAr in THF at room temperature in high yield. These chlorides can be used as starting materials to synthesize heteroleptic lanthanide aryloxides. Complex 3 reacted with 1 equiv. of MeCpNa in THF to form a complex (MeCp)Yb(ArO)2(THF) (5) containing mixed ligands. The divalent aryloxo lanthanide complexes Sm(ArO)2(THF)3 (6) and Yb(ArO)2(THF)3 (7) were obtained in good yield by reducing compounds 1 and 3 with sodium metal in THF, respectively. Single crystal structures of complexes 2·PhMe, 3·PhMe and 6·PhMe were determined. Complexes 2 and 3 are isostructural, in which one chlorine atom, two aryloxo ligands and two THF molecules are coordinated to the central metal to form a distorted trigonal bipyramid geometry. Complex 6 has similar stereochemistry to that of 2 and 3.

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