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WBr4(P(CH3)2C6H5)2 is a complex organometallic compound consisting of a tungsten (W) center, four bromine (Br) atoms, and two phosphorus-containing ligands. The tungsten atom is at the center, bonded to four bromine atoms, forming a square planar geometry. The two phosphorus ligands, P(CH3)2C6H5, are bidentate, meaning each ligand binds to the tungsten center through two points, in this case, the phosphorus atom and one of the carbon atoms from the phenyl group (C6H5). WBr4(P(CH3)2C6H5)2 is an example of a metal-phosphine complex, which are important in various applications, including catalysis and the formation of metal-organic frameworks. The specific combination of tungsten and bromine with phosphorus ligands in WBr4(P(CH3)2C6H5)2 suggests it may have unique electronic and steric properties that could be exploited in chemical reactions or materials science.

25731-32-2

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25731-32-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 25731-32-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,7,3 and 1 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 25731-32:
(7*2)+(6*5)+(5*7)+(4*3)+(3*1)+(2*3)+(1*2)=102
102 % 10 = 2
So 25731-32-2 is a valid CAS Registry Number.

25731-32-2Upstream product

25731-32-2Downstream Products

25731-32-2Relevant academic research and scientific papers

Synthesis and Structure Determinations of Complexes Containing a Five-Membered Lactam Structure Based on Organohydrazido(2-) Ligands

Seino, Hidetake,Ishii, Youichi,Hidai, Masanobu

, p. 161 - 171 (1997)

Acid-catalyzed reactions of the hydrazido(2-) complexes cis,mer-[WX2(NNH2)(PMe2Ph)3] (X = Cl, Br) with phthalaldehyde gave the (phthalimidin-2-yl)imido complexes cis,mer-[WX2(NNCH2CH2C6H 4CO)(PMe2Ph)3], via the condensation of the terminal NH2 group with one of the formyl groups and the following cyclization to form a phthalimidine ring. Crystal structure of the chloro complex 3a was unambiguously determined by X-ray analysis. Reaction of 3a with HBr liberated the (phthalimidin-2-yl)imido ligand as 2-aminophthalimidine in moderate yield, while treatment of 3a with KOH in THF selectively cleaved the N-N bond to give phthalimidine. A similar condensation of the hydrazido(2-) complex trans-[WF(NNH2)(dppe)2]+ (8a+; dppe = Ph2PCH2CH2PPh2) with phthalaldehyde resulted in the formation of the diazoalkane complex trans-[WF(NN=CHC6H4CHO)(dppe)2]+. However, further treatment of the latter complex with AlCl3 afforded the corresponding (phthalimidin-2-yl)imido complex trans-[WF(NNCH2C6H4CO)(dppe)2] +. When 8a+ and its molybdenum analogue were reacted with 2,5-dimethoxy-2,5-dihydrofuran in the presence of a catalytic amount of acid, trans-[MF(NNCH=:CHCH2CO)(dppe)2]+ (11+; M = Mo, W) was formed as the kinetic product, which gradually isomerized to the thermodynamically more stable compound trans-[MF(NNCH2CH=CHCO)(dppe)2]+ (12+). Both 11+ and 12+ (M = W) were crystallographically characterized, and the mechanism for the isomerization of 11+ to 12+ was proposed based on the results of the 1H NMR measurements.

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