公共汽车
发表于 2025-3-25 04:42:35
,The Nature of C—H Hydrogen Bonding, of 1920. While it was realised even then that certain groups containing hydrogen atoms show a propensity for forming weak bonds with electron-rich groups on the same or another molecule, the mechanism of formation of this bond has proven to be a considerable challenge.
Calibrate
发表于 2025-3-25 08:27:44
Experimental Techniques,en bonds involving C—H groups. For the interested reader, a more detailed description of these and other techniques is given in reference . Therein, Pimentel and McClellan suggest that these may be divided into two broad classes:
JOT
发表于 2025-3-25 13:23:40
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洁净
发表于 2025-3-25 19:35:50
Introduction,In the now classic monograph by Pimentel and McClellan entitled . (309), the brief section concerned with the C—H groups was entitled ‘Do C—H Groups Form Hydrogen Bonds?’ The conclusions, for the compounds and classes of compounds considered, were as follows:
口味
发表于 2025-3-25 23:13:48
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外形
发表于 2025-3-26 02:59:18
https://doi.org/10.1007/978-1-349-02172-7bonding; chemical bond; hydrogen
interference
发表于 2025-3-26 05:11:58
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heartburn
发表于 2025-3-26 10:22:31
sp Carbon,—C bond moment of 3.80 × 10. C m (hydrogen positive). Hence, end-to-end interaction of HCN molecules is to be expected. The resultant C≡N bond length, 115.3 pm , is nearly identical to that for other nitrile bonds .
POWER
发表于 2025-3-26 13:05:52
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思想灵活
发表于 2025-3-26 17:05:56
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