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25987-99-9

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25987-99-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 25987-99-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,9,8 and 7 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 25987-99:
(7*2)+(6*5)+(5*9)+(4*8)+(3*7)+(2*9)+(1*9)=169
169 % 10 = 9
So 25987-99-9 is a valid CAS Registry Number.

25987-99-9Downstream Products

25987-99-9Relevant articles and documents

Facile synthesis of σ,μ-iminoacyl bridged butterfly clusters (μ-RE)(σ,μ-ArC=NAr′)Fe2(CO)6 (E=S, Se)

Yan, Chao-Guo,Sun, Jing,Sun, Jie

, p. 63 - 67 (1999)

The reactive anionic salts [Et3NH][(μ-RE)(μ-CO)Fe2(CO)6] (1) (RE=PhS, PhSe) reacted with N-arylbenzimidoyl chloride Ph(Cl)C=NAr′ (2) (Ar=Ph, 4-MeC6H4, 4-C6H4) in THF to give butterfly σ,μ-iminoacyl bridged hexacarbonyldiiron clusters (μ-RE)(σ,μ-PhC=NAr′)Fe2(CO)6 (3a-e) in moderate yields. The structure of the new clusters was characterized by elemental analyses, IR and 1H-NMR spectroscopy. X-ray diffraction confirmed the crystal structure of (μ-PhSe)(σ,μ-PhC=NPh)Fe2(CO)6 (3a). It crystallizes in the triclinic space group P1 (no. 2) with a=11.224(3), b=13.542(4), c=8.9559(2) A, α=102.32(2), β=91.95(2), γ=70.20(2)°, V=1250.1(6) A3, Z=2 and Dcalc=1.636 g cm-3.

Remarkable reactions of cationic carbyne complexes of manganese and rhenium with diiron anions [Fe2(μ-CO)(μ-SeR)(CO)6]-. A route to RSe-bridged dimetal bridging carbene complexes

Wang, Ruitao,Xu, Qiang,Souma, Yoshie,Song, Li-Cheng,Sun, Jie,Chen, Jiabi

, p. 2226 - 2233 (2008/10/08)

The reactions of cationic carbyne complexes of manganese and rhenium, [η-C5H5(CO)2M≡CC6 H5]BBr4 (1, M = Mn; 2, M = Re), with diiron anionic compounds [Et3NH][Fe2(μ-CO) (μ-SeR)(CO)6] (3, R = C6H5; 4, R = p-CH3C6H4) in THF at low temperature gave the dimetal bridging carbene complexes [MFe{μ-C(SeR)C6H5} (CO)5(η-C5H5)] (10, M = Mn, R = C6H5); 11, M = Mn, R = p-CH3C6H4; 13, M = Re, R = C6H5; 14, M = Re, R = (p-CH3C6H4), [η-C5H5M(CO)3] (7, M = Mn; 12, M = Re), and [Fe2(μ-SeR)2(CO)6] (8, R = C6H5; 9, R = p-CH3C6H4). Complexes 1 and 2 also react with [MgBr][Fe2(μ-CO) (μ-SeC2H5)(CO)6] (5) to produce [Fe2(μ-SeC2H5)2(CO)6] (15) and dimetal bridging carbene complexes [MnFe{μ-C(SeC2H5)C6H5} (CO)5(η-C5H5)] (17) and [ReFe{μ-C(SeC2H5)C6H5} (CO)5(η-C5H5)] (18), respectively. 2 reacts similarly with [MgBr][Fe2(μ-CO)(μ-SeC4H9-n) (CO)6] (6) to give [Fe2(μ-SeC4H9-n)2(CO)6 ] (16) and a Re-Fe bridging carbene complex [ReFe{μ-C(SeC4H9-n)C6H5}(CO) 5(η-C5H5)] (19), while the analogous reaction of 1 with 6 produced an unexpected trimetal bridging carbyne complex [MnFe2(μ-H)(μ-CO)2(μ3 -CC6H5(CO)6) (η-C5H5)] (20). The structures of complexes 9, 10, 13, 18, and 20 have been established by X-ray diffraction studies.

Chemical reactivity of [(μ-RSe) (μ-S) {Fe2(CO)6}2(μ4-S)]-: Synthesis and characterization of (μ-RSe) (μ-R'S) {Fe2(CO)6}2(μ4-S) and (μ3-S)2

Zheng, Huai-Ben,Miao, Shao-Bin,Wang, Zhong-Xia,Zhou, Zhong-Yuan,Zhou, Xiang-Ge

, p. 713 - 718 (2008/10/08)

The reaction Of (μ-S2)Fe2(CO)6 with [(μ-RSe) (μ-CO)Fe2(CO)6]- gives the anionic complexes [(μ-RSe) (μ-S){Fe2(CO)6}2(μ4-S)]- (1). Reactions of 1 w

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