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141.
Reactions of electronically excited NH(a 1Δ) with propane have been investigated in the gas phase at room temperature. Pressure dependence of the yields of insertion and fragmentation products was measured. The relative secondary/primary CH bond reactivities (per bond) are determined to be 1.5 for insertion and 7.5 for abstraction. 相似文献
142.
Title azaannulenes were synthesized starting from annulenones, and the 1H-NMR spectra are discussed in connection with tropicity of these annulenes. 相似文献
143.
Weak coupling perturbative calculations of the Wilson loop in lattice gauge theory are carried out numerically up to order g4. Comparison of the results with those of the Monte Carlo calculations shows that there exists a non-perturbative contribution of an essential singularity type which may be identified as the string tension. 相似文献
144.
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147.
Itoh T Shichi T Yui T Takagi K 《Langmuir : the ACS journal of surfaces and colloids》2005,21(8):3217-3220
The present investigation reports on the significant differences observed in the efficiency of the polymerization depending on the odd- or even-numbered methylene chains of diacetylenecarboxylates, CH3(CH2)(m-1)C[triple bond]C-C[triple bond]C(CH2)(n-1)CO2- (mono-[m,n]), incorporated in layered double hydroxide (LDH) clay. Upon gamma-ray irradiation of the diacetylenecarboxylates, or mono-[m,n], in LDH clay, polymer hybrids or poly-[m,n]/LDH, which exhibited coloring from light orange to violet, were obtained. The color of the poly-[m,n]/LDH hybrids was strongly dependent on the extent of the polymerization degrees. Moreover, the polymerization degrees were controlled by the number of methylene spacers n between the carboxyl and diacetylene groups. An odd-numbered n for the methylene chain of mono-[m,n] was found to be the determining factor in the efficient polymerization of these self-assembling aggregates within the interlayers of LDH clay. 相似文献
148.
Edward A. Nodiff Shuichiro Ina Noriichi Oda Takanori Hayazaki Sansei Nishibe Tetsuya Kohno Martin Hausman Albert A. Manian 《Journal of heterocyclic chemistry》1967,4(2):239-245
The title compounds and various derivatives have been prepared as analytical standards for the identification of chlorpromazine metabolites in biological materials. Additional evidence is presented for the existence of a halogen-induced Smiles rearrangement in the phenothiazine series. 相似文献
149.
We calculate the correlation functions in the SU(2) gauge-spin system with spin in the fundamental representation. We analyze the result making use of finite size scaling. There is a possibility that there are no second order phase transition lines in this model, contrary to previous assertions. 相似文献
150.