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The chemical compound "W(CO)4(P(CH2CH3)(C6H5)2)(P(CH3)3)" is a complex organometallic compound consisting of a tungsten (W) center. It features four carbonyl (CO) ligands, which are linear molecules that bind to the metal through a triple bond. Attached to the tungsten are two different phosphine ligands: one is diphenylethylphosphine, denoted as P(CH2CH3)(C6H5)2, which has a central phosphorus atom bonded to an ethyl group and two phenyl groups; the other is trimethylphosphine, P(CH3)3, with a phosphorus atom bonded to three methyl groups. W(CO)4(P(CH2CH3)(C6H5)2)(P(CH3)3) is significant in organometallic chemistry due to its potential applications in catalysis and its unique electronic properties arising from the combination of metal and organic ligands.

97704-45-5

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97704-45-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 97704-45-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,7,0 and 4 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 97704-45:
(7*9)+(6*7)+(5*7)+(4*0)+(3*4)+(2*4)+(1*5)=165
165 % 10 = 5
So 97704-45-5 is a valid CAS Registry Number.

97704-45-5Downstream Products

97704-45-5Relevant academic research and scientific papers

Relative phosphorus ligand sizes from cis:trans distributions of W(CO)4(L)(L′) products obtained from the reaction of W(CO)4(L) (py) with L′ (L and L′ = phosphines), reaction kinetics, and syntheses of starting materials

Boyles, Melissa L.,Brown, Daniel V.,Drake, Dennis A.,Hostetler, Cheryl K.,Maves, Constance K.,Mosbo, John A.

, p. 3126 - 3131 (2008/10/08)

The relative sizes of 12 phosphines (L′ = PMe3, PPhMe2, PEt3, P(n-Bu)3, PPh2Me, PPh2Et, PPh3, P(p-tol)3, PPh2(i-Pr), PPh2(t-Bu), PBz3, or PCy3) have been studied by determining cis:trans ratios of W(CO)4(L)(L′) products obtained from reactions of W(CO)4(L)(py) complexes with L′ (L = PPhMe2, PPh2Et, or P(p-tol)3). In general, a decrease in the cis:trans ratio was observed as the Tolman cone angle of L′ increased. Exceptions occurred with PEt3 and P(H-Bu)3, for which cone angles of 140-145°, rather than Tolman's value of 132°, would be consistent with the other ratio data. Kinetic studies of these reactions indicate that dissociative loss of pyridine is rate limiting. Also reported are the synthesis of W(CO)4(L)(py) from W(CO)4(py)2 and L and 31P NMR data for 21 new W(CO)4(L)(L′) complexes.

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