angle strain是由于分子中某相邻键的角度与该类正常键的键角相差很大引起的.例如环丙烷C-C-C的夹角为60度,这与饱和烃中C-C-Csp3键角109.5度相差很大,所以不稳定.一般说成,由于存在angle strain,因此环丙烷有开环的倾...结果一 题目 angle strain,torsional strain和steric strain之间有什么区别呀? 答案 angle...
angle strain是由于分子中某相邻键的角度与该类正常键的键角相差很大引起的。例如环丙烷C-C-C的夹角为60度，这与饱和烃中C-C-Csp3键角109.5度相差很大，所以不稳定。一般说成，由于存在angle strain，因此环丙烷有开环的倾向，易于开环来释放angle strain.torsional strain是由于重叠式构象带来的空间...
答案解析 查看更多优质解析 举报 angle strain是由于分子中某相邻键的角度与该类正常键的键角相差很大引起的.例如环丙烷C-C-C的夹角为60度,这与饱和烃中C-C-Csp3键角109.5度相差很大,所以不稳定.一般说成,由于存在angle strain,因此环丙烷有开环的倾... 解析看不懂?免费查看同类题视频解析查看解答 ...
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For the entire series, there appears to be a delicate balance between angle and torsional deformation, but twisting appears to produce smaller relief from steric strain than angle bending. In the crystallographically characterized trisubstituted alkenes, the choice between the two is mainly determined ...
The torsional stress and strain can be calculated from torque and angle of twist with the help of torsional equation. The expression of torsional...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our...
For the entire series, there appears to be a delicate balance between angle and torsional deformation, but twisting appears to produce smaller relief from steric strain than angle bending. In the crystallographically characterized trisubstituted alkenes, the choice between the two is mainly determined ...
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strain state of soil and the nature of the fluid in soil voids. The λ parameter was determined by the initial dilatancy angles of granular soil at the onset of shearing on the same initial state of the soil in the drained and undrained tests. In addition, the generalized dilatancy angle ...
‾‾Mz is the torsional moment about the z-axis. ‾εz is the axial strain along the beam. ‾κx is the bending curvature about the x-axis. ‾κy is the bending curvature about the y-axis. ‾κz is the torsional twist about the z-axis.Ports...