125655-26-7

Basic information

• Product Name: Urea, N,N'-bis(diphenylphosphino)-N,N'-dimethyl-
• CAS NO: 125655-26-7
• Molecular Formula: C27H26N2OP2
• Molecular Weight: 456.464
• Mol File: 125655-26-7.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: Urea, N,N'-bis(diphenylphosphino)-N,N'-dimethyl-(CAS DataBase Reference)
• NIST Chemistry Reference: Urea, N,N'-bis(diphenylphosphino)-N,N'-dimethyl-(125655-26-7)
• EPA Substance Registry System: Urea, N,N'-bis(diphenylphosphino)-N,N'-dimethyl-(125655-26-7)

Safety Data

• Hazardous Substances Data: 125655-26-7(Hazardous Substances Data)

Upstream product

• 10218-17-4 N,N'-dimethyl-N,N'-bis(trimethylsilyl)urea 
• 1079-66-9 chloro-diphenylphosphine 
• 96-31-1 N,N'-Dimethylurea 

Downstream Products

• 263552-27-8 [{Ph₂PN(Me)}₂CO]PdCl₂ 
• 390811-12-8 cis-[PtMe(Cl)(Ph₂PN(Me)CON(Me)PPh₂)] 
• 390811-07-1 cis-[PtMe₂(Ph₂PN(Me)CON(Me)PPh₂)] 
• 390811-01-5 cis-[PtCl₂(Ph₂PN(Me)CON(Me)PPh₂)] 
• 390811-21-9 cis-[Mo(CO)4(Ph₂PN(Me)CON(Me)PPh₂)] 
• 263552-42-7 [Pd₂[(C₆H₅)2PN(CH₃)C(O)N(CH₃)]2[(C₆H₅)2PO]2] 

Relevant articles and documents

The preparation and coordination chemistry of phosphorus(III) derivatives of dialkyl ureas and thioureas

The preparation of Ph2PNEtC(O)NEtPPh2 and Ph2PNMeC(S)NMePPh2 is reported. The coordination chemistry of Ph2PNEtC(O)NEtPPh2, Ph2PNMeC(O)NMePPh2 and Ph2PNMeC(S)NMePPh2 with Pt(II) and Pd(II) has been studied. The urea derivatives react with MCl2(cod) (M = Pd, Pt) to give simple MCl2L complexes. Demonstrative examples of simple chelate Mo(CO)4L and bimetallic ClAu-L-AuCl complexes have also been prepared. However with Pd(OAc)2 bimetallic compounds [PdOPh2{N(Me)C(O)N(Me)PPh2}]2 containing hydrolysed ligands (P-N bond cleaved) are formed. Furthermore the thiourea compound reacts with PtCl2(cod) to give [Pt{Ph2PN(Me)- C(N(Me)HS)}Cl2], a true heterocycle containing a PtSCNP ring. The new compounds have been characterised spectroscopically and the X-ray structures of six complexes are reported.

Preparation of P-Chloro-Substituted N,N'-Dimethylurea-Bridged Diphosphorus Compounds, their Dehalogenation with Oxalic Acid Bis(trimethylsilyl) Ester and Subsequent Oxidation with Tetrachloro-o-benzoquinone

Reaction of N,N'-dimethyl-N,N'-bis(trimethylsilyl)urea (1) with dichlorophosphines, RPCl2 (R = Et: 14; R = Pri: 15) has furnished the P-chloro-substituted acyclic diphosphorus compounds, 16 and 17.In the analogous reaction of 1 with Ph2PCl the corresponding bis(diphenylphosphino)-substituted derivative, 21 was formed.Dehalogenation of 11, 16 and 17 with oxalic acid bis(trimethylsilyl)ester, 22 has produced the mixed-valent cyclic λ3P, λ4P-diphosphorus compounds, 23-25 in almost quantitative yield.Oxidation of the λ3P atom in 23-25 with tetrachloroorthobenzoquinone, 26 has given rise to partial cleavage of the P-P bond, and only moderate yields of the products, 29, 31 and 32, have been obtained.The characterization of the various compounds obtained rests, especially, on their 1H and 31P NMR spectra, and on a study of their mass spectral fragmentation pattern. - keywords: N,N'-Dimethyl-N,N'-bis(trimethylsilyl)urea, N,N'-Dimethyl-N,N'-bisalkyl(chlorophosphino)urea, N,N'-Dimethyl-N,N'-bis(diphenylphosphino)urea, Oxalic Acid Bis(trimethylsilyl) Ester, Mixed Valence Diphosphorus Compounds