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zhanghuaiy銅蟲(chóng) (正式寫(xiě)手)
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【求助】puckering parameter計(jì)算 已有3人參與
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| 請(qǐng)問(wèn)各位大俠,ring puckering parameter是怎么計(jì)算的?謝謝了!! |
晶體好貼 |
金蟲(chóng) (正式寫(xiě)手)
銅蟲(chóng) (正式寫(xiě)手)
銀蟲(chóng) (正式寫(xiě)手)
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4.計(jì)算平面Q, T值(每個(gè)原子偏離由該組原子構(gòu)成平面的程度) 搜索詞:Ring Puckering Analysis示例: ==================================================================================================================================== 6-Membered Ring ( 1) Cu(1) --> O(3) --> C(21) --> C(16) --> C(15) --> N(3) -->------------------------------------------------------------------------------------------------------------------------------------ sp3 sp2 sp2 sp2 sp2 Dev. (Ang) -0.2468 0.1930 -0.0247 -0.0898 0.0361 0.1322 Cs(I)-Asym-Par (Deg) 9.47 17.77 27.11 9.47 17.77 27.11 C2(I)-Asym-Par (Deg) 41.03 38.18 32.23 41.03 38.18 32.23 Ring Bond Angle(Deg) 91.46 125.24 122.00 122.78 127.35 121.97 Tors(I-J) (Deg) 33.15 -26.30 1.64 4.54 12.84 -26.10 Cs(I-J)-Asym-Par (Deg) 38.44 28.94 35.98 38.44 28.94 35.98 C2(I-J)-Asym-Par (Deg) 7.92 31.08 26.11 7.92 31.08 26.11 Ring Bond Distance (Ang) 1.9005 1.3627 1.4050 1.4777 1.2575 2.0189 Weighted Average Ring Bond Distance = 1.5704(999,999) Ang. - NOTE: 1st esd. Internal, 2nd esd External. Weighted Average Abs. Torsion Angl. = 17.43( 41,528) Deg. see: e.g. Domenicano et al., Acta Cryst.(1975), B31, 221-234. Cremer & Pople Puckering Parameters [D. Cremer & J.A. Pople, J.Amer.Chem.Soc., 97, (1975), 1354-1358] ------------------------------------------------------------------------------------------------------------------------------------ Q(2) = 0.2978 Ang., hi(2) =191.7850 Deg Q(3) = -0.1922 Ang. :: C & P - Puckering Analysis may be DUBIOUS since %(Bond Distance Range/Average) = 48.5 > 25.0 % Puckering Amplitude (Q) = 0.3544 Ang, Theta = 122.84 Deg, hi =191.7850 Deg 說(shuō)明:該六元環(huán)由Cu(1) --> O(3) --> C(21) --> C(16) --> C(15) --> N(3)組成 計(jì)算結(jié)果為Puckering Amplitude (Q) = 0.3544 Ang, Theta = 122.84 Deg, hi =191.7850 Deg 但有時(shí)程序不能計(jì)算Puckering,如果計(jì)算的話(huà)就會(huì)給出數(shù)值。 |
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