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The chemical compound "W(CO)4(P(CH3)2C6H5)(P(C6H5)2(CH(CH3)2))" is a complex organometallic compound consisting of a tungsten (W) center. It features four carbonyl (CO) ligands, which are common in transition metal complexes, providing stability through back-bonding. One of the ligands is a diphenylphosphinoethane (P(CH(CH3)2)2), which is a bidentate ligand with two phosphorus atoms bonded to the metal, enhancing the stability and electronic properties of the complex. The other ligand is a triphenylphosphine (P(C6H5)3) with one phenyl group replaced by an ethyl group (CH2CH3), adding steric bulk and potentially influencing the complex's reactivity and geometry. W(CO)4(P(CH3)2C6H5)(P(C6H5)2(CH(CH3)2)) is likely to be used in homogeneous catalysis, given the presence of phosphine ligands, which are known to modulate the electronic and steric properties of metal centers, affecting their catalytic activity.

97704-41-1

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97704-41-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 97704-41-1 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 1 respectively.
Calculate Digit Verification of CAS Registry Number 97704-41:
(7*9)+(6*7)+(5*7)+(4*0)+(3*4)+(2*4)+(1*1)=161
161 % 10 = 1
So 97704-41-1 is a valid CAS Registry Number.

97704-41-1Upstream product

97704-41-1Downstream Products

97704-41-1Relevant 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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