299188-34-4

Basic information

• Product Name: [(Nb(acetonitrile)2Cl3)2(μ-1,4-NC6H4N)]
• CAS NO: 299188-34-4
• Molecular Weight: 666.852
• Mol File: 299188-34-4.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: [(Nb(acetonitrile)2Cl3)2(μ-1,4-NC6H4N)](CAS DataBase Reference)
• NIST Chemistry Reference: [(Nb(acetonitrile)2Cl3)2(μ-1,4-NC6H4N)](299188-34-4)
• EPA Substance Registry System: [(Nb(acetonitrile)2Cl3)2(μ-1,4-NC6H4N)](299188-34-4)

Safety Data

• Hazardous Substances Data: 299188-34-4(Hazardous Substances Data)

Upstream product

• 25811-68-1 N,N,N',N'-tetrakis(trimethylsilyl)-1,4-phenylenediamine 
• 10026-12-7 niobium pentachloride 
• 75-05-8 acetonitrile 

Relevant articles and documents

Synthesis and structural characterization of new organo-diimido and organo-imido niobium and titanium complexes

The organo-diimido complexes [{Nb(L2)Cl3}2(μ-l,4-NC 6H4N)], L = CH3CN 1a or 4-'Bupy 2a, [{Nb(L2)Cl3}2(μ-1,3-NC6H 4N)], L = CH3CN Ib or 4-′Bupy 2b, and [{Nb(L2)Cl3}2(μ-1,2-NC6H 4N)], L = CH3CN le or 4-'Bupy 2c were isolated by treating NbCl5 in the presence of CH3CN or 4-'Bupy with the appropriate amount of the corresponding aniline A′,N,N′,N′-tetrakis(trimethylsilyl)-1,4-, -1,3-, or -1,2-phenylenediamine, respectively. Compound la reacts with appropriate alkylating reagents to give the corresponding alkyl complexes, namely [{NbLR3}2(μ-1,4-NC6H4N)], L = CH3CN, R = CH2SiMe3 3a; or CH2CMe3 3b; L = THF, R = CH2SiMe3 4a or CH2CMe3 4b. The crystal structure determination of 3a was carried out. Reaction of [Ti(py)3Q2(N′Bu)] with N′,N′,N′-tetramethyl-M-phenylenediamine, in 2:1 or 1:1 stoichiometric ratio, afforded the organo-imido complexes [Ti(py)nCl2(1,4-NC6Me4NH 2)], n = 3 (5a) or 2 (5b), while analogous reactions with 1,4- or 1,3-phenylenediamine give intractable mixtures of products. Organo-imido and organo-diimido titanium complexes were easily prepared by treating TiCl4 with the appropriate N′,N′,N′-tetrakisftrimethylsirytyphenylenediamines in CH2Cl2 in 1:1 and 2:1 molar ratios in the presence of 4-tert-butylpyridine or W.A^W.W-tetramethylethylenediamine (TMEDA). The compounds prepared in this way are [Ti(4-Bupy)2Cl2{1,4-NC6H4N(SiMe 3)2}] 6a, [Ti(TMEDA)-Cl2{1,4-NC6H4N(SiMe 3)2}] 6b, [Ti(TMEDA)Cl2{1,3-NC6H4N(SiMe3) 2}] 7b, [{Ti(4-'Bupy)2C2(μ-1,4-NC6H4N)] 8a, [{Ti(TMEDA)Cl2}2(μ3-1,4-NC6H4N)] 8b, [{Ti(4-′Bupy)2Cl2}2(u-l,3-NC6H4N)] 9a and [{Ti(TMEDA)Cl2}2-(μ-1,3-NC6H4N)] 9b. Finally, the same reaction with N′,N′,N′.-tetrakisOrimethylsilyO-1,2-phenylenediamine, in the presence of 4-'Bupy or TMEDA, gives the diamido complexes [Ti(4-'Bupy)2Cl2{ 1,2-C6H4(NH)2}] 10a and [Ti(TMEDA)Cl2{1,: 2-C6H4(NH)2} lOb. The structures of the different families of complexes were determined by spectroscopic methods. The Royal Society of Chemistry 2000.