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1044757-88-1

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1044757-88-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1044757-88-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,4,4,7,5 and 7 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1044757-88:
(9*1)+(8*0)+(7*4)+(6*4)+(5*7)+(4*5)+(3*7)+(2*8)+(1*8)=161
161 % 10 = 1
So 1044757-88-1 is a valid CAS Registry Number.

1044757-88-1Downstream Products

1044757-88-1Relevant articles and documents

Synthetic and structural studies of butterfly Fe/S/P cluster complexes related to the active site of [FeFe]-hydrogenases. Proton reduction to H 2 catalyzed by (η1-Ph2PS-η1) 2Fe2(CO)6

Song, Li-Cheng,Zeng, Guang-Huai,Lou, Shao-Xia,Zan, Hui-Ning,Ming, Jiang-Bo,Hu, Qing-Mei

, p. 3714 - 3721 (2009/02/06)

The butterfly Fe/S cluster anions (μ-RS)(μ-S-)Fe 2(CO)6 (A, R = Et, p-MeC6H4), (μ-S-)2Fe2(CO)6 (C), [(μ-S-)Fe2(CO)6]2(4-μ-SC 6H4C6H4S-μ-4′) (D), and [(μ-S-)Fe2(CO)6]2[4-μ-SC 6H4OCH2CH2OC6H 4S-μ-4′] (E) (generated in situ via reactions of (μ-S2)Fe2(CO)6 with RMgBr, Et 3BHLi, 4-LiC6H4C6H 4Li-4′, and 4-LiC6H4OCH 2CH2OC6H4Li-4′) were found to react with Ph2PCl to give a series of novel butterfly Fe/S/P cluster complexes. Treatment of monoanions A (R = Et, p-MeC6H4) with 1 equiv of Ph2PCl in THF from - 78°C to room temperature gave the single-butterfly Fe2S2P complexes (μ-RS)(η1-Ph2PS-η1)Fe 2(CO)6 (7, R = Et; 9, R = p-MeC6H4) and (μ-RS)(η1-Ph2PS-η1)Fe 2(CO)5(Ph2PY) (8, R = Et, Y = Cl; 10, R = p-MeC6H4, Y = p-MeC6H4), whereas dianions C, D, and E reacted with 2 equiv of Ph2PCl to give single-butterfly Fe2S2P2 complex (η1-Ph2PS-η1)2Fe 2(CO)6 (11) and double-butterfly Fe4S 4P2 complexes [(η1-Ph2PS- η1)Fe2(CO)6]2(4-μ-SC 6H4C6H4S-μ-4′) (12) and [(η1-Ph2PS-η1)Fe2(CO) 6]2[4-μ-SC6H4OCH 2CH2OC6H4S-μ-4′] (13), respectively. More interestingly, the novel μ4-S-containing double-butterfly Fe4S2P complexes [(μ-RS)Fe 2(CO)6](μ4-S)[(μ-Ph2P)Fe 2(CO)6] (14, R = Me; 15, R = Ph; 16, R = Et) could be prepared by reactions of single-butterfly complexes (μ-RS)(η1- Ph2PS-η1)Fe2(CO)6 (1, R = Me; 3, R = Ph; 7 R = Et) with excess Fe2(CO)9 in THF at room temperature, whereas the quadruple-butterfly Fe8S4P 2 complexes [(μ-Ph2P)Fe2(CO) 6(μ4-S)Fe2(CO)6] 2(4-μ-SC6H4C6H 4S-μ-4′) (17) and [(μ-Ph2P)Fe 2(CO)6(μ4-S)Fe2(CO) 6]2[4-μ-SC6H4OCH 2CH2OC6H4S-μ-4′] (18) were similarly prepared by reactions of the corresponding double-butterfly complexes 12 and 13 with excess Fe2(CO)9, respectively. All the new complexes 7-18 have been characterized by elemental analysis, by spectroscopy, and for 9, 11, and 14 by X-ray crystallography. In view of the structural similarity of these Fe/S/P complexes to the [FeFe]-hydrogenase active site, they might be regarded as H-cluster models. As a representative, model complex 11 was found to be able to catalyze proton reduction to hydrogen under CV conditions.

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