184172-09-6

Basic information

• Product Name: Nb(η5-(trimethylsilyl)cyclopentadienyl)2(H)(CN(2,6-(CH3)2C6H3))
• Synonyms: Nb(η5-(trimethylsilyl)cyclopentadienyl)2(H)(CN(2,6-(CH3)2C6H3))
• CAS NO: 184172-09-6
• Molecular Weight: 499.645
• Mol File: 184172-09-6.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: Nb(η5-(trimethylsilyl)cyclopentadienyl)2(H)(CN(2,6-(CH3)2C6H3))(CAS DataBase Reference)
• NIST Chemistry Reference: Nb(η5-(trimethylsilyl)cyclopentadienyl)2(H)(CN(2,6-(CH3)2C6H3))(184172-09-6)
• EPA Substance Registry System: Nb(η5-(trimethylsilyl)cyclopentadienyl)2(H)(CN(2,6-(CH3)2C6H3))(184172-09-6)

Safety Data

• Hazardous Substances Data: 184172-09-6(Hazardous Substances Data)

Upstream product

• 119072-54-7 2,6-dimethylphenyl isonitrile 

Downstream Products

• 315245-68-2 [(η5-C5H4SiMe3)2(2,6-dimethylphenylisocyanido)Nb(μ-H)BF3] 
• 315245-62-6 [(η5-C5H4SiMe3)2(2,6-dimethylphenylisocyanido)Nb(μ-H)B(C6F5)3] 
• 193358-25-7 Nb(η(5)-C5H4SiMe3)2(CN-2,6-xylyl)(η(1)-OC(H)NPh) 
• 193358-27-9 Nb(η(5)-C5H4SiMe3)2(CN-2,6-xylyl)(η(1)-SC(H)NPh) 
• 184171-83-3 Nb(η(5)-C5H4SiMe3)2(CNC6H3Me2)(C(CO2Me)=CH2) 
• 184171-82-2 Nb(η(5)-C5H4SiMe3)2(CNC6H3Me2)(C(CO2tBu)=CHCO2tBu) 
• 184171-81-1 Nb(η(5)-C5H4SiMe3)2(CNC6H3Me2)(C(CO2Me)=CHCO2Me) 
• 184171-84-4 Nb(η(5)-C5H4SiMe3)2(CNC6H3Me2)(C(CO2Me)=CHCH3) 
• 192436-29-6 (C₅H₄Si(CH₃)3)2NbH₂(CNC₆H₃(CH₃)2)⁽¹⁺⁾*CF₃COO^(1-) = [(C₅H₄Si(CH₃)3)2NbH₂(CNC₆H₃(CH₃)2)](CF₃COO) 
• 861144-92-5 [(η5-C5H4SiMe3)Nb(κ-O,O'-OOCC6H5)(xylylNC)] 
• 947261-87-2 (η5-C5H4SiMe3)2Nb(CNC6H3-2,6-Me2)(κ1-2-mercaptobenzoxazole(1-)) 
• 947261-88-3 (η5-C5H4SiMe3)2Nb(CNC6H3-2,6-Me2)(κ1-1,3,5-triazine-2,4,6-trithiol(3-)) 
• 947261-85-0 (η5-C5H4SiMe3)2Nb(CNC6H3-2,6-Me2)(κ1-2-mercaptobenzothiazole(1-)) 

Relevant articles and documents

Synthesis and characterization of the first Niobocene germyl complexes and reactivity of triphenylsilyl-, triphenylgermyl-, and triphenylstannylniobocene derivatives. X-ray molecular structures of d0 Nb(η5-C5H4SiMe3) 2(H)2(EPh3) (E = Ge, Sn)

Thermal treatment of Nb(η5-C5H4SiMe3) 2(H)3 (1) with the appropriate organogermanium hydrides (HGeR3) and HSnPh3 gives the corresponding niobocene germyl hydrides Nb(η5-C5H4SiMe3) 2(H)2(GeR3), GeR3=GePh3 (2), GePh2H (3), GeEt3 (4), Ge(C6H13)3 (5), GeiAm3 (iAm = CH2CH2CH(CH3)2) (6), Ge(C6H13)2Cl (7), GeiAm2Cl (8), Ge(C6H13)2H (9), GeiAm2H (10), and Nb(η5-C5H4SiMe3) 2(H)2(SnPh3) (11) in good yields. Spectroscopic data indicate the presence of only one of the two possible structural isomers in which the germyl or stannyl group is in the equatorial plane with a symmetrical structure. Reactivity studies on the series Nb(η5-C5H4SiMe3) 2(H)2(ER3), E = Si (12), Ge (2), Sn (11), were carried out. 12 reacts with H2 to give 1, but 2 and 11 were unreactive toward this reagent. Furthermore, a similar behavior was observed with CO and CN(2,6-Me2C6H3). Thus, 12 reacts with these reagents to give rise, after elimination of HSiPh3, to Nb(η5-C5H4SiMe3) 2(H)(CO) and Nb(η5-C5H4SiMe3) 2-(H)(CN(2,6-Me2C6H3)), respectively, while 2 and 11 do not react. Reactions of 12 with HGePh3 and HSnPh3 and of 2 with HSnPh3 gave σ-bond metathesis products, but no reactions were observed between 2 and HSiPh3 or between 11 and HSiPh3 or 11 and HGePh3. The kinetics of these processes have been studied by 1H NMR spectroscopy and indicated the following reactivity trends Nb-SiPh3 > Nb-GePh3 > Nb-SnPh3 for the different processes considered. The X-ray molecular structures of 2 and 11 were established by diffraction studies The two isostructural complexes show a bent-sandwich coordination with the two hydrides flanking either side of the Nb-Ge and Nb-Sn bonds (2.710(1), 2.830(1) A? in 2 and 11, respectively).