99714-75-7

Basic information

• Product Name: {1,1-bis(diphenylphosphino)-4-tolylbut-3-yne-P,P'}-tetracarbonyltungsten
• CAS NO: 99714-75-7
• Molecular Weight: 808.462
• Mol File: 99714-75-7.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: {1,1-bis(diphenylphosphino)-4-tolylbut-3-yne-P,P'}-tetracarbonyltungsten(CAS DataBase Reference)
• NIST Chemistry Reference: {1,1-bis(diphenylphosphino)-4-tolylbut-3-yne-P,P'}-tetracarbonyltungsten(99714-75-7)
• EPA Substance Registry System: {1,1-bis(diphenylphosphino)-4-tolylbut-3-yne-P,P'}-tetracarbonyltungsten(99714-75-7)

Safety Data

• Hazardous Substances Data: 99714-75-7(Hazardous Substances Data)

Upstream product

• 52999-17-4 lithium (p-tolyl)acetylide 
• 109-72-8 n-butyllithium 
• 84534-91-8 (CO)4W(PPh₂C(=CH₂)PPh₂) 
• 766-97-2 4-n-methylphenylacetylene 

Downstream Products

• 112574-38-6 (CO)4W(P(C₆H₅)2)2CCHCHCH(C₆H₄CH₃) 

Relevant articles and documents

Conjugate Addition of Acetylides to Complexes of Type > (M=Cr, Mo, or W): Crystal Structure of >formed by the Base-catalysed Isomerization of CPh>>

Although treatment of > with Li(C)CPh resulted in no conjugate addition, in the presence of Me2NCH2CH2NMe2 smooth addition occurred to give CPh>> (1c).Similar additions were effected with the corresponding complexes of Cr and other acetylides, Li(CCR) where R=C6H4Me-p, Me, Prn, or Bun, underwent addition.Treatment of CPh>> with KOBut in PriOH gave the dienephosphine comples > (2a); the p-tolylacetylide complex > was also prepared.Crystals of compound (2a) are monoclinic, space group P21/c with a=988.4(3), b=1069.7(2), c=3233.7(4) pm, β=94.73(2) deg, and Z=2; final R=0.0334 and R'=0,0316 for 3929 observed reflexions.Hydrogen-1 and 31P- n.m.r. and i.r. data are given.