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1204427-34-8

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1204427-34-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1204427-34-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,0,4,4,2 and 7 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1204427-34:
(9*1)+(8*2)+(7*0)+(6*4)+(5*4)+(4*2)+(3*7)+(2*3)+(1*4)=108
108 % 10 = 8
So 1204427-34-8 is a valid CAS Registry Number.

1204427-34-8Relevant articles and documents

Preparation and photoluminescence of some europium (III) ternary complexes with β-diketone and nitrogen heterocyclic ligands

Wang, Dunjia,Pi, Yan,Zheng, Chunyang,Fan, Ling,Hu, Yanjun,Wei, Xianhong

, p. 54 - 58 (2013)

Preparation and photoluminescence behavior of four new europium (III) ternary complexes with b-diketones (1-(6-methoxy-naphthalen-2-yl)-3-phenyl- propane-1,3-dione (MNPPD) and 1-(4-tertbutyl- phenyl)-3-(6-methoxy-naphthalen-2- yl)-propane-1,3-dione (BPMPD)) and 2,2-dipyridine (Bipy) or 1,10-phenanthroline (Phen) were reported, in the solid state. Complexes Eu(MPPD)3Bipy, Eu(BMPD)3Bipy, Eu(MPPD)3Phen and Eu(BMPD)3Phen were characterized by elemental analysis, FT-IR, 1H NMR, UV-vis absorption. The emission spectra show narrow emission bands that arise from the 5D0→ 7FJ (J = 0-4) transitions of the europium ion. Based on the emission spectra and luminescence decay curves in solid state, the intensity parameters (Ω τ ), lifetime (η ) and emission quantum efficiency (η ) were determined. The Ω 2 values indicate that the Eu(III) ion in these complexes is in a highly polarizable chemical environment. Complexes Eu(MPPD)3Bipy and Eu(MPPD)3Phen showed a longer lifetime (s) and a higher luminescence quantum efficiency (g), which indicated that the energy transfer to the europium ion from MNPPD ligand is more efficient than that from BPMPD ligand.

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