nhch3是甲基乙酰胺。为白色针状结晶。甲基(methylgroup),甲烷分子中去掉一个氢原子后剩下的电中性的一价基团。由碳和氢元素组成。甲基作为一个化学基团(-CH?),它能够结合在DNA上某些特定部位,这个甲基和DNA结合过程叫甲基化,相反,甲基从DNA上脱落的过程就叫做去甲基化。甲烷(系统名为“碳烷”...
nhch3是甲基乙酰胺。为白色针状结晶。甲基(methylgroup),甲烷分子中去掉一个氢原子后剩下的电中性的一价基团。由碳和氢元素组成。甲基作为一个化学基团(-CH₃),它能够结合在DNA上某些特定部位,这个甲基和DNA结合过程叫甲基化,相反,甲基从DNA上脱落的过程就叫做去甲基化。 甲烷(系统名为“碳烷”,但只在介绍系...
Two stable Conformers (I, II) of CH(3)NHNH(2) are identified by the rotation of the -CH(3) group. For each conformer, five hydrogen-abstraction channels are found. The reaction mechanisms of product radicals (CH(3)NNH(2) and CH(3)NHNH) with OH radical are also investigated ...
NH(CH3)3GeCl3, C3H10N+.Ge2+.3Cl, crystallizes at room temperature in an orthorhombic modification with a = 9.537(2), b = 8.235(2), c = 12.138(2), Z = 4, space group Cmc21. These cell parameters correspond to a derivative of the cubic perovskite structure type, with abacubic and...
Dielectric properties of the new [NH(CH3)3]2ZnCl4 and [NH(CH3)3]2CdCl4 crystals from the [(CH3) n NH4-n ]2MeCl4 group have been investigated in a wide temperature range (4.2320 K). A series of phase transitions has been discovered at T3 = 325 K,T4 = 251 K,T5 = 193 K, ...
Both compounds crystallize in the monoclinic system (space group C2 m; a... K Berroth,A Simon - 《Journal of the Less Common Metals》 被引量: 52发表: 1980年 First-principles study of cubic Bi pyrochlores We examined a range of cubic Bi2B2O6O′ (B=Ti, Ru, Rh, Ir, Os, and Pt)...
The chemistry of unsaturated organometallic compounds withmultiple bonds between a group 14 atom and a heteroatom has assumedincreasing importance during t... CH Lai - 《Chemical Communications》 被引量: 0发表: 2000年 Ab Initio Study of the F + CH3NHNH2 Reaction Mechanism The F + CH3NHNH2 re...
Theoretical group analysis of the phase transition sequence in (CH3)3NHCdCl3Recently three phases of (CH3)3NHCdCl3 (TrMCd) compound have been identified by X-ray diffraction as well as thermal expansion and calorimetric measurements in the range from 174 to 415 K. Following the Landau Theory...
Crystallization in orthorhombic P2 1 2 1 2 1 space group with lattice parameters a = 8.693 (4), b = 10.825 (3), c = 11.419 (5)A, Z = 4; the final R value is 0.046. Title compound is a natural product. The material was isolated from endophyte infected seeds of Festuca...
Taylor & Francis GroupFerroelectricsMiniewicz, A., Sworakowski, J., Jakubas, R., Bertault, M., Ecolivet, C.: Ferroelectrics 94 (1989) 323.A. Miniewicz,J. Sworakowski,R. Jakubas,M. Bertault,C. Ecolivet.  Studies of phase transitions in new ferroelectric crystal [nh(ch3)3]3...