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qulihua新蟲(chóng) (小有名氣)
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[求助]
求一段關(guān)于鍵長(zhǎng)分析——漢譯英
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C(8)-N(2) 、C(7)-N(1)的鍵長(zhǎng)分別為為1.481(2)Å、1.474(2)Å,接近典型的C-N鍵鍵長(zhǎng)1.47-1.50Å;由于N(1)和N(2)的孤對(duì)電子分別與苯環(huán)發(fā)生p-π共軛效應(yīng),造成C(1)-N(2)、C(6)-N(1)的鍵長(zhǎng)分別縮短為1.430(2)Å、1.427(2)Å;C(7)-C(8) 的鍵長(zhǎng)為1.514(3)Å,接近典型的C-C鍵長(zhǎng)1.53Å;C(9)-O(1)、C(11)-O(2)的鍵長(zhǎng)分別為1.211(2)Å、1.214(2)Å,接近C=O的鍵長(zhǎng)(1.21Å-1.23Å ;N(1)的孤對(duì)電子與C(11)-O(2)的雙鍵發(fā)生p-π共軛效應(yīng),造成C(11)-N(1)的鍵長(zhǎng)縮短為1.352(2)Å;N(2)的孤對(duì)電子與C(9)-O(1)的雙鍵發(fā)生p-π共軛效應(yīng),造成C(9)-N(1)的鍵長(zhǎng)縮短為1.362(2)Å。 |
版主 (文壇精英)
米米
| The bond lengths of C8-N2 and C7-N1 are 1.481(2) Å and 1.474(2) Å respectively, which are close to 1.47-1.50A, the typical C-N bond length. Because the lone pairs of N1 and N2 have p-π conjugation with benzene ring respectively, the bond lengths of C1-N2 and C6-N1 decrease to 1.430(2) Å and 1.427(2) Å. The bond length of C7-C8 is 1.514(3) Å, which is close to 1.53Å, the typical C-C bond length. The bond length of C9-O1 and C11-O2 are respectively 1.211(2) Å and 1.214(2) Å, which are close to 1.21Å-1.23Å, the C=O bond length. The lone pair electrons of N1 have p-π conjugation with double bond in C11-O2 and the bond length of C11-N1 decreases to 1.352(2)Å. The lone pair electrons of N2 have p-π conjugation with double bond in C9-O1 and the bond length of C9-N1 decreases to 1.362(2)Å. |
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