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燈泡3204木蟲 (著名寫手)
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[求助]
加H不合理 已有2人參與
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checkcif時發(fā)現(xiàn)A類錯誤,Short Inter D-H..H-X H2’ ..H7 . 1.38 Ang. 2-x,1/2+y,-z = 2_755 Check 其中H2'是氧上的活潑H,H7為C上的H,重新加H,以及限制鍵長都沒有解決,請專家高手給與指導(dǎo),謝謝! lst文件中未顯示有無序,但是某些原子橢球率比較高, |
鐵桿木蟲 (正式寫手)

木蟲 (著名寫手)
鐵桿木蟲 (正式寫手)

木蟲 (著名寫手)
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重新解析后checkcif,錯誤變了 PLAT415_ALERT_2_A Short Inter D-H..H-X H1'A ..H6 . 1.75 Ang. 2-x,1/2+y,-z = 2_755 Check Short inter D-H..H-X contact. This might be a di-hydrogen bond of the type B-H..H-O. See: Crabtree et al. Acc. Chem. Res. 1996, 29, 348-354. PLAT415_ALERT_2_A Short Inter D-H..H-X H3' ..H5 . 1.39 Ang. 1+x,1+y,z = 1_665 Check Potential hydrogen bond donors are checked for the presence of suitable acceptors using commonly used (Jeffrey) H-bond criteria. As a general rule there should be an acceptor for each donor. Exceptions are very rare for O-H and more common for -NH and -NH2. A common error is an -OH on a calculated position pointing in the wrong direction. |
木蟲 (著名寫手)
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PLAT415_ALERT_2_A Short Inter D-H..H-X H1'A ..H6 . 1.75 Ang. 2-x,1/2+y,-z = 2_755 Check PLAT415_ALERT_2_A Short Inter D-H..H-X H3' ..H5 . 1.39 Ang. 1+x,1+y,z = 1_665 Check Short inter D-H..H-X contact. This might be a di-hydrogen bond of the type B-H..H-O. See: Crabtree et al. Acc. Chem. Res. 1996, 29, 348-354. Alert level B PLAT420_ALERT_2_B D-H Without Acceptor O2' --H2' . Please Check PLAT420_ALERT_2_B D-H Without Acceptor O3' --H3' . Please Check Potential hydrogen bond donors are checked for the presence of suitable acceptors using commonly used (Jeffrey) H-bond criteria. As a general rule there should be an acceptor for each donor. Exceptions are very rare for O-H and more common for -NH and -NH2. A common error is an -OH on a calculated position pointing in the wrong direction. |
木蟲 (著名寫手)
鐵桿木蟲 (正式寫手)

木蟲 (著名寫手)
木蟲 (著名寫手)
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