C-Ta (Carbon-Tantalum)
نویسندگان
چکیده
منابع مشابه
Insertion of carbon dioxide and isocyanide into tantalum–amide and tantalum–methyl bonds
The methyl–amide complex [TaCp*(NBu)Me(NMe2)] (1a) was isolated by reaction of the chloro–methyl [TaCp*(NBu)MeCl] complex with LiNMe2. Reaction of the mono-amide compounds [TaCp*(N Bu)XY] (X=NMe2, Y=Me (1a); X=NHBu, Y=Me (1b), Cl (1c)) with CO2 gives the h-carbamate derivatives [TaCp*(NBu)(h-O2CX)Y] (X=NMe2, Y=Me (2a); X=NHBu, Y=Me (2b), Cl (2c)). A similar reaction with the di-amide complex [T...
متن کاملSynthesis and characterization of the cycloheptatrienyl tantalum "mixed-sandwich" compounds (c5r5)ta(c7h7).
The molecule (cycloheptatrienyl)(cyclopentadienyl)tantalum, (C(5)H(5))Ta(C(7)H(7)) (1), and its methylcyclopentadienyl and pentamethylcyclopentadienyl analogues (C(5)H(4)Me)Ta(C(7)H(7)) (2), and (C(5)Me(5))Ta(C(7)H(7)) (3) have been synthesized by magnesium reduction of the corresponding (C(5)R(5))TaCl(4) species in the presence of cycloheptatriene. The crystal structures of 2 and 3 show that t...
متن کاملSp 3 content in ta - C
Tetrahedral amorphous carbon (ta-C) films were studied with and without applying fixed pulse bias and frequency at variable pulse widths in double bent Filtered Cathodic Vacuum Arc(FCVA) system. Both from Raman and X-ray photoelectron spectroscopy(XPS) analyses it has been observed that the ratio of sp/sp is maximal at pulse width of 15 μs with fixed pulse bias 3kV and frequency 200 kHz. Increa...
متن کاملÜber die Staudinger-Reaktion mit Tantaltetrachloridazid. Die Kristallstruktur von Tantal(V)-(triphenylphosphinimino)tetrachlorid, Ta[NP(C6H5)3]Cl4 On the Staudinger Reaction with Tantalum Tetrachloride Azide. The Crystal Structure of Tantalum(V)(triphenyl-phosphinimino)tetrachloride, Ta[NP(C6H5)3]Cl4
[TaCl4N3]2 reacts easily w i t h P P h 3 y ie lding T a C l 4 ( N P P h 3 ) , T a C l 4 ( N P P h 3 ) ( N H P P h 3 ) and T a d s . T h e lat ter are supposed to be products of the reaction of pr imari ly formed TaCl 4 (NPPh 3 ) 2 -TaCl 4 + w i t h the solvent C1CH 2 -CH 2 C1. T a C l 4 ( N P P h 3 ) crystal l izes in the monoclinic s y s t e m w i t h the space group P2i/c. T h e crys ta l s t...
متن کاملInfluence of ion energy and substrate temperature on the optical and electronic properties of tetrahedral amorphous carbon (ta-C) films
The properties of amorphous carbon ~a-C! deposited using a filtered cathodic vacuum arc as a function of the ion energy and substrate temperature are reported. The sp fraction was found to strongly depend on the ion energy, giving a highly sp bonded a-C denoted as tetrahedral amorphous carbon ~ta-C! at ion energies around 100 eV. The optical band gap was found to follow similar trends to other ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Phase Equilibria
سال: 1998
ISSN: 1054-9714
DOI: 10.1007/s12385-006-5013-9