过渡态是指反应物体系转变成产物体系过程中,经过的能量最高状态(或称活化络合物)。过渡态键的状况是:旧键未完全断裂,新键未完全形成。过渡态是不稳定的,不能分离出来。过渡态和反应物的能量差(△E)称为活化能。不同的反应体系有不同的活化能,活化能愈大反应愈困难。
... 六配位 过渡态 [gap=548]Keywords】: PHOSPHORYL COMPOUNDS,TRANSESTERIFICATION,HISTIDINE,HEXACOORDINATE,TRANSITION STATE ...
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... transition point 改变点,转换点 transition temperature 过渡态 transition temperature 过渡温度 ...
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BIG WINEBOTTLE SHAPE SHOARO PAPER » 大醉酒太白形状 SHOARO 纸 transition structure » 过渡态 may be network is slow » 可能是网络速度慢 ..
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Control problem of turbofan engine transient state, such as acceleration, deceleration and reheat acceleration, are discussed. And the feasible solutions, which can meet the requirement of optimal algorithm and engine, are presented.
根据优化算法的特点和发动机过渡态控制的要求,分析讨论并给出涡扇发动机加、减速和加力过程等过渡态的寻优控制可行实现形式。
参考来源 - X型涡扇发动机过渡态寻优控制By analyzing the calculation results and combining with the results of engine transition condition tests, the temperature field characters of transition condition are well investigated.
通过对计算结果的分析并结合发动机过渡态试验结果,充分研究了燃烧室过渡态温度场的特性。
参考来源 - 航空发动机燃烧室过渡态温度场数值研究According tothe transition state theory, we have simulated the structure of tetrahedronof ester hydrolysis to design and synthesize sulf-hapten and phosphorous-hapten and antigen.
以过渡态理论为基础,模拟酯水解的四面体中间态结构,分别以磷原子和硫原子为四面体过渡态类似物的中心原子来设计和合成了半抗原和全抗原。
参考来源 - 催化布洛芬甲酯选择性水解的抗体酶的研究In the following step, the bonding between C(1) and O(3) in the transition state breaks, with the formation of a new bond C(1)-O(31). A SN2 substitute reaction thus finishes with the generation of an alcohol and an acid product.
综上所述,所有的计算结果和细节分析,都支持了我们对该反应机理的判断,即:反应物的C(1)=O(2)羰键逐渐变弱,C(1)-O(31)之间形成弱单键,形成了过渡态;过渡态的C(1)-O(3)键断裂,同时C(1)-O(31)之间成键,完成双分子亲核取代反应,得到醇羟基和羧酸产物——这样的一个过程。
参考来源 - 拟除虫菊酯类农药降解机理的理论研究·2,447,543篇论文数据,部分数据来源于NoteExpress
它们的过渡态是离域双同芳香性的。
However, their transition states are delocalized and bishomoaromatic.
振动分析和IRC计算结果都证实了中间体和过渡态的真实性。
Intermediates and transition states are confirmed by the results of vibration analysis and IRC calculation.
该反应为放热基元反应,其结构过渡态出现在能量过渡态之后。
The reaction is an exothermic reaction, its structure transition state occurs after energy transition state.
Now we want to show a notation, how do we go from one equilibrium state like this describes to another equilibrium state?
现在我们要展示一种记号,来标记)我们如何,从这里描述的,这样的一个平衡态过渡到另一个平衡态?
I've gone from 1 equilibrium state to another equilibrium state and the equal sign means you go from this state to that state.
从一个平衡态,过渡到了另一个平衡态,等号表示,从这个态到了那个态。
So it applies to macroscopic systems that are in equilibrium, and how to go from one equilibrium state to another equilibrium state, and it's entirely empirical in its foundation.
因此,热力学研究的是平衡态的宏观系统,以及如何从,一个平衡态过渡到另一个平衡态,它完全是建立在经验的基础上的。
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