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1257316-37-2

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1257316-37-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1257316-37-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,7,3,1 and 6 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1257316-37:
(9*1)+(8*2)+(7*5)+(6*7)+(5*3)+(4*1)+(3*6)+(2*3)+(1*7)=152
152 % 10 = 2
So 1257316-37-2 is a valid CAS Registry Number.

1257316-37-2Downstream Products

1257316-37-2Relevant articles and documents

Synthesis, spectroscopic and structural characterization of the high-spin Fe(II) cyanato-N and thiocyanato-N "picket fence" porphyrin complexes

Dhifet, Mondher,Belkhiria, Mohamed Salah,Daran, Jean-Claude,Schulz, Charles E.,Nasri, Habib

, p. 3208 - 3213 (2010)

Two new iron(II) five-coordinated porphyrin complexes [Na(2,2,2-crypt)] [FeII(TpivPP)(NCO)] (1) (TpivPP = α,α,α,α- tetrakis(o-pivalamidophenyl) porphyrin known as picket fence porphyrin and 2,2,2-crypt is the cryptand-222) and [K(2,2,2-crypt)][FeII(TpivPP) (NCS)] (2) have been prepared and characterized. The UV-Vis and IR spectroscopic data are consistent with a cyanato-N and thiocyanato-N ferrous porphyrinates. The Mo?ssbauer data and the X-ray structural analysis indicate that the Fe(II) cation in 1 and 2 is high-spin (S = 2) and has the (dxy)2(dxz)1(dyz) 1(dz2)1(dx2-y2)1 ground state electronic configuration. For complex 1, the average equatorial iron-pyrrole N bond length (Fe-Np = 2.120(2) ), the distance between the iron and the 24-atom mean plane of the porphyrin ring (Fe-PC = 0.6805(7) ) and the distance between the iron and the plane made by the four pyrrole nitrogens (Fe-PN = 0.5923(12) ) are longer than those of complex 2 and similar five-coordinated Fe(II) high-spin porphyrinates. This is probably due to the significant electronic repulsion of the dx2-y2 and dxy orbitals by the negative charge of the pyrrole N atoms in case of 1.

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