Synthesis and characterization of Group 6 metal silicide–silicon carbide composites via solid-state displacement reactions of nanosize grains of M2C and silicon

1993 ◽  
Vol 3 (3) ◽  
pp. 321-322 ◽  
Author(s):  
Dongshui Zeng ◽  
Mark J. Hampden-Smith ◽  
Lu-Min Wang
1993 ◽  
Vol 322 ◽  
Author(s):  
D. Zeng ◽  
M. J. Hampden-Smith ◽  
L.-M. Wang

AbstractCo-reduction of mixtures of MoCl3(THF)3 and SiCls4 in THF using Li/C10H8 or both Li/C10Hs8 and LiBEt3H resulted in formation and separation of black powders which upon thermal annealing at temperatures ranging from 750°C to 1 100°C produced crystalline molybdenum silicide and silicon carbide composite. Co-reduction of mixtures of WCI4 and GeBr4 with LiBEt3H in THF formed W2C and elemental Ge which upon thermal treatment at 750°C for 4 hours generated a small amount of crystalline W5Ge3.


2021 ◽  
Vol 98 (3) ◽  
pp. 100040
Author(s):  
Ranjit Bag ◽  
Suman Gomosta ◽  
Alaka Nanda Pradhan ◽  
Thierry Roisnel ◽  
Sundargopal Ghosh

2008 ◽  
Vol 179 (21-26) ◽  
pp. 1242-1245 ◽  
Author(s):  
Erika Dutková ◽  
Peter Baláž ◽  
Parviz Pourghahramani ◽  
Anh V. Nguyen ◽  
Vladimír Šepelák ◽  
...  

2002 ◽  
Vol 80 (11) ◽  
pp. 1524-1529 ◽  
Author(s):  
Tianle Zhang ◽  
Warren E Piers ◽  
Masood Parvez

Reaction of McConville's chelating amido titanium complex [(Ar)NCH2CH2CH2N(Ar)]Ti(CH3)2 (Ar = 2,6-i-Pr2C6H3) with either elemental Se or the tellurium atom source Te=PBu3 resulted in the formation of bis-µ-chalcogenido dimers [(Ar)NCH2CH2CH2N(Ar)]2Ti(µ-E)2 (E = Se, 2; Te, 3) with concommitant loss of EMe2. The dimers 2 and 3 were characterized spectroscopically and via X-ray crystallography. The two compounds are isostructural in the solid state. The tellurido dimer 3 may also be synthesized by reduction of the diamido dichloride [(Ar)NCH2CH2CH2N(Ar)]2TiCl2 with Na–Hg amalgam followed by treatment with Te=PBu3. This dimer is unreactive toward further Te=PBu3 or stannanes such as HSnBu3. Unlike decamethyltitanocene derivatives, the diamido complex is not an effective catalyst precursor for the heterohydrodecoupling of Te=PBu3 and HSnBu3.Key words: diamido titanium complexes, selenides, tellurides.


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