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922499-04-5

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922499-04-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 922499-04-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,2,2,4,9 and 9 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 922499-04:
(8*9)+(7*2)+(6*2)+(5*4)+(4*9)+(3*9)+(2*0)+(1*4)=185
185 % 10 = 5
So 922499-04-5 is a valid CAS Registry Number.

922499-04-5Upstream product

922499-04-5Relevant articles and documents

Synthesis, structure and electrochemical properties of N-substituted diiron azadithiolates as active site models of Fe-only hydrogenases

Song, Li-Cheng,Ge, Jian-Hua,Liu, Xu-Feng,Zhao, Li-Qun,Hu, Qing-Mei

, p. 5701 - 5709 (2008/10/09)

As biomimetic models for the active site of Fe-only hydrogenases,six newN-substituted diiron azadithiolates (ADT) were prepared.Treatment of CH 2 Cl 2 solutions of primary amines RNH 2 with paraformaldehyde followed by an excess of SOCl 2 gave N,N-bis(chloromethyl)amines RN(CH 2 Cl) 2 (1,R = CH 2 CO 2 Et;2,C 6 H 4 C(O)Me-p;3,C 6 H 4 CO 2 Me-p;4,C 6 H 4 SCN-p) in30-90percent yields.Further treatment of the chloromethylated amines 1- 4 with (μ-LiS) 2 Fe 2 (CO) 6 in THF resulted in formation of the corresponding N-substituted ADT-type models [(μ-SCH 2 ) 2 NR]Fe 2 (CO) 6 (5,R = CH 2 CO 2 Et;6,C 6 H 4 C(O)Me-p;7,C 6 H 4 CO 2 Me-p;8,C 6 H 4 SCN-p) in 24-75percent yields.Also prepared were the N-substituted models[(μ-SCH 2 ) 2 NC(O)CH 2 C 10 H7 -α]Fe 2 (CO) 6 (9) and 1,4-[Fe 2 (CO) 6 (μ- SCH 2 ) 2 NC(O)] 2 C 6 H 4 (10) by reaction of CH 2 Cl 2 solutions of [(μ-SCH 2 ) 2 NH]Fe 2 (CO) 6 with α-C 10 H 7 CH 2 COCl and 1,4-C 6 H 4 (COCl) 2 in 81percent and28percent yields, respectively. All the new compounds 1-10 were charact erized by elemental analysis and spectroscopy, as well as for 5-7 and 9 by X-ray crystallography. The crystallographic studies indicated that the functionality of 5 attached to the bridged N atom lies in an equatorial position, whereas those of functionalities of 6, 7, and 9 are located in an axial position. This is presumably due to different electronic andsteric effects between the N-substituted aliphatic and aromatic functio nalities. More interestingly, model 7 has been found to be a catalyst for proton reduction in the presence of either strong acid CF 3 CO 2 H or weak acid HOAc under electrochemical conditions. In addition, two mechanisms ECCE and EECC are preliminarily suggested for such two electrocatalytic H 2 production processes, respectively.

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