78803-21-1

Basic information

• Product Name: (η-C5H5)Mo(CO)3{P(OPh)3}BF4
• CAS NO: 78803-21-1
• Molecular Weight: 642.16
• Mol File: 78803-21-1.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: (η-C5H5)Mo(CO)3{P(OPh)3}BF4(CAS DataBase Reference)
• NIST Chemistry Reference: (η-C5H5)Mo(CO)3{P(OPh)3}BF4(78803-21-1)
• EPA Substance Registry System: (η-C5H5)Mo(CO)3{P(OPh)3}BF4(78803-21-1)

Safety Data

• Hazardous Substances Data: 78803-21-1(Hazardous Substances Data)

Upstream product

• 80823-49-0 [(C₅H₅)(CO)2(P(OC₆H₅)3)Mo]⁽¹⁺⁾*BF₄^(1-)=[(C₅H₅)(CO)2(P(OC₆H₅)3)Mo]BF₄ 
• 501-65-5 diphenyl acetylene 
• 101-02-0 triphenyl phosphite 
• 12176-06-6 hydrido(tricarbonyl)(cyclopentadienyl)molybdenum 
• 341-02-6 trityl tetrafluoroborate 
• 68868-78-0 Mo(CO)3(Cp)(BF₄) 

Downstream Products

• 118332-78-8 cis-(η-C5H5)Mo(CO)2{P(OPh)3}CHO 

Relevant articles and documents

Reactions of cis- and trans-(η5-C5H5)Mo(CO) 2[P(OPh)3]CH2OCH3 with electrophiles

Reactions of trans- and cis-CpMo(CO)2[P(OPh)3]CH2OCH3 (1a,b) with a variety of protonic acids and with Me3SiOTf have been examined. The composition of product mixtures has been shown to be dependent upon the strength of the electrophile and the presence of nucleophiles such as Br- or PPh3 or the methylene acceptor Ph3SiH and is proposed to be governed by complex equilibria involving transient oxonium ions as well as methylidene cations. Neither type of transient intermediate can be observed in low-temperature reactions. Methoxymethylidene cations, trans- and cis-CpMo(CO)2[P(OPh)3](=CHOCH3)+, are generated in some low-temperature reactions with electrophiles. Independent synthesis of these has shown that they decompose in solution at room temperature to metallacycle 2, CpMo(CO)2[P(OPh)2(o-OC6H4CH 2)], and CpMo(CO)3[P(OPh)3]+. Reactions of trans- and cis-CpMo(CO)2[P(OPh)3]CH2OC(O)CF3 (6a,b) with CF3COOH indicate that metallacycle formation occurs directly from the cis isomer (6b) in an acid-catalyzed process. Thermolysis studies of 6a,b indicate that trans to cis isomerization is facile and that 6b is readily converted to 2. Thermolysis of trans-CpMo(CO)2[P(OPh)3]CH2Br (10b) yields 2 and its ring-opened derivative as major products. Metallacycle 2 has been characterized by X-ray crystallography: a = 14.457(3) ?, b = 10.729(2) ?, c = 15.611(3)?, β = 103.65(2)°, Z = 4, dc = 1.53 g cm-3, space group P21/n, and R = 0.024.

METALLORGANISCHE LEWIS-SAEUREN; METALLKOMPLEXE MIT SCHWACH KOORDINIERTEN LIGANDEN. VIII. REAKTIONEN VON TETRAFLUOROBORATO-KOMPLEXEN (η5-C5H5)(CO)2(L)(MoFBF3 (L = CO, PR3) MIT ALKINEN

The reaction of the tetrafluoroborato compounds (η5-C5H5)(CO)2(L)MoFBF3 with various alkynes gives mono- and bis-alkyne complexes 5-C5H5)Mo(CO)(RCCR')2>+ BF4- (III) and 5-C5H5)Mo(CO)(L)(RCCR')>