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nirenjie0627金蟲(chóng) (小有名氣)
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[求助]
請(qǐng)大家?guī)兔Ψg一段話,謝謝!
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| 從圖中可以看出CH3—,—CH2—伸縮振動(dòng)吸收帶在2850~3000cm-1范圍內(nèi),其彎曲變形振動(dòng)吸收帶在1450~1470 cm-1和720~725 cm-1范圍內(nèi),C—N伸縮振動(dòng)在1030~1230 cm-1范圍內(nèi),—C—O—C—伸縮振動(dòng)在1140 cm-1附近,存在于1620~1680、3410~3540 cm-1范圍內(nèi)的吸收帶表明樣品中含有一定的水,這可能歸結(jié)于—C—O—C—鍵中的氧原子易和H2O分子中的氫原子形成氫鍵,近而導(dǎo)致樣品易吸水。 |
鐵桿木蟲(chóng) (知名作家)
| It can be seen from the figure that the stretching vibration absorption bands of CH3-,-CH2- ranges from 2850 to 3000cm-1, with its bending vibration absorption bands at 1450 ~ 1470 cm-1 and 720 ~ 725 cm-1. The stretching vibration of C- N is at 1030 ~ 1230 cm-1 range while the stretching vibration of -C-O-C- is near 1140cm-1. The absorption bands which is in the range of 1620~1680 or 3410~3540cm-1 indicates that there is water in the samples, which might be attributed to the fact that the oxygen atoms in -C-O-C-bond can easily combine with the hydrogen atoms in the H2O molecule to form hydrogen bonds. |

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