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The chemical compound "W(CO)4(P(CH3)2C6H5)(P(C6H5)2(C(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 center through a triple bond. One of the ligands is a diphenylphosphinoethane (P(CH3)2C6H5), which has two methyl groups attached to a phosphorus atom and is connected to a phenyl ring. The other ligand is a triisopropyldiphenylphosphine (P(C6H5)2(C(CH3)3)), which has two phenyl groups and a bulky triisopropylmethyl group attached to the phosphorus atom. W(CO)4(P(CH3)2C6H5)(P(C6H5)2(C(CH3)3)) is significant in organometallic chemistry due to its potential applications in catalysis and its unique electronic and steric properties.

97748-03-3

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97748-03-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 97748-03-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,7,4 and 8 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 97748-03:
(7*9)+(6*7)+(5*7)+(4*4)+(3*8)+(2*0)+(1*3)=183
183 % 10 = 3
So 97748-03-3 is a valid CAS Registry Number.

97748-03-3Downstream Products

97748-03-3Relevant 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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