高等学校化学学报 ›› 2020, Vol. 41 ›› Issue (9): 2046.doi: 10.7503/cjcu20200291
收稿日期:
2020-05-25
出版日期:
2020-09-10
发布日期:
2020-09-02
通讯作者:
王一波
E-mail:ybw@gzu.edu.cn
基金资助:
Received:
2020-05-25
Online:
2020-09-10
Published:
2020-09-02
Contact:
WANG Yibo
E-mail:ybw@gzu.edu.cn
Supported by:
摘要:
以CCSD(T)/CBS方法的结合能计算结果为标准, 选择CAM-B3LYP-D3BJ/def2-SVPD密度泛函理论方法计算了甲氧基柱[5]芳烃(MeP5)与CnH2n+2(n=1~10, 12, 14, 16) 复合物的结合能, 结果表明, 它们之间存在强烈的相互作用, 且随着烷烃分子碳链的增长而增大; 热力学函数计算结果表明, 在298.15 K, 101325 Pa下, MeP5与CnH2n+2(n=3~10, 12, 14, 16)形成复合物的过程中, ΔG和ΔH均小于零, 是焓驱动的自发过程. 烷烃与MeP5之间C―H…π和C―H…O的协同作用是主客体复合物稳定化的起因, 用二代绝对局域分子轨道能量分解(ALMO-EDA)方法分析此协同作用, 发现其中静电作用和色散作用的贡献相近, 二者加和约占总吸引的94%, 极化能和电荷转移能仅占6%.
中图分类号:
TrendMD:
孙涛, 王一波. 柱芳烃与烷烃间C―H…π和C―H…O的作用本质及协同性. 高等学校化学学报, 2020, 41(9): 2046.
SUN Tao, WANG Yibo. Theoretical Study on the Nature and Cooperation of C―H•••O and C―H•••π Interactions in the Pillar[5]arene and n⁃Alkanes Complexes. Chem. J. Chinese Universities, 2020, 41(9): 2046.
Method | ΔEb/(kJ·mol-1) | Method | ΔEb/(kJ·mol-1) | ||
---|---|---|---|---|---|
def2?SVPD | def2?TZVPP | def2?SVPD | def2?TZVPP | ||
CCSD(T)/CBS | -23.77 | -23.77 | PBE0?D3BJ | -24.69 | -24.89 |
ωB97X?V | -24.31 | -24.81 | B3LYP?D3BJ | -25.10 | -25.31 |
ωB97M?V | -24.48 | -25.19 | B3PW91?D3BJ | -24.85 | -25.15 |
ωB97X?D | -28.03 | -28.58 | CAM?B3LYP?D3BJ | -23.97 | -24.14 |
M06?2X?D3 | -23.26 | -23.10 | LC?ωPBE?D3BJ | -24.56 | -24.77 |
PBE?D3BJ | -24.94 | -25.15 | B2PLYP?D3BJ | -21.55 | -21.92 |
Table 1 Binding energies(ΔEb) of C10H14O2…C8H18 complex using density functional theory methods with different basis sets
Method | ΔEb/(kJ·mol-1) | Method | ΔEb/(kJ·mol-1) | ||
---|---|---|---|---|---|
def2?SVPD | def2?TZVPP | def2?SVPD | def2?TZVPP | ||
CCSD(T)/CBS | -23.77 | -23.77 | PBE0?D3BJ | -24.69 | -24.89 |
ωB97X?V | -24.31 | -24.81 | B3LYP?D3BJ | -25.10 | -25.31 |
ωB97M?V | -24.48 | -25.19 | B3PW91?D3BJ | -24.85 | -25.15 |
ωB97X?D | -28.03 | -28.58 | CAM?B3LYP?D3BJ | -23.97 | -24.14 |
M06?2X?D3 | -23.26 | -23.10 | LC?ωPBE?D3BJ | -24.56 | -24.77 |
PBE?D3BJ | -24.94 | -25.15 | B2PLYP?D3BJ | -21.55 | -21.92 |
Complex | (kJ·mol-1) | (kJ·mol-1) | Complex | (kJ·mol-1) | (kJ·mol-1) |
---|---|---|---|---|---|
MeP5…CH4 | -32.68 | -30.33 | MeP5…C8H18 | -129.37 | -113.80 |
MeP5…C2H6 | -55.69 | -49.62 | MeP5 …C9H20 | -133.43 | -117.53 |
MeP5 …C3H8 | -74.35 | -65.73 | MeP5…C10H22 | -137.74 | -121.38 |
MeP5…C4H10 | -91.42 | -81.34 | MeP5…C12H26 | -141.92 | -124.77 |
MeP5…C5H12 | -103.85 | -91.17 | MeP5…C14H30 | -144.10 | -126.52 |
MeP5…C6H14 | -112.97 | -100.29 | MeP5…C16H34 | -144.64 | -126.98 |
MeP5…C7H16 | -121.63 | -106.82 |
Table 2 Binding energies of MeP5…CnH2n+2(n=1―10, 12, 14, 16)
Complex | (kJ·mol-1) | (kJ·mol-1) | Complex | (kJ·mol-1) | (kJ·mol-1) |
---|---|---|---|---|---|
MeP5…CH4 | -32.68 | -30.33 | MeP5…C8H18 | -129.37 | -113.80 |
MeP5…C2H6 | -55.69 | -49.62 | MeP5 …C9H20 | -133.43 | -117.53 |
MeP5 …C3H8 | -74.35 | -65.73 | MeP5…C10H22 | -137.74 | -121.38 |
MeP5…C4H10 | -91.42 | -81.34 | MeP5…C12H26 | -141.92 | -124.77 |
MeP5…C5H12 | -103.85 | -91.17 | MeP5…C14H30 | -144.10 | -126.52 |
MeP5…C6H14 | -112.97 | -100.29 | MeP5…C16H34 | -144.64 | -126.98 |
MeP5…C7H16 | -121.63 | -106.82 |
Complex | EALMO-EDA/(kJ·mol-1) | EElec/(kJ·mol-1) | EPauli/(kJ·mol-1) | EDisp/(kJ·mol-1) | EPol/(kJ·mol-1) | ECT/(kJ·mol-1) |
---|---|---|---|---|---|---|
MeP5…C12H26 | -124.75 | -210.48(46.06%) | 332.23 | -219.45(48.02%) | -15.28(3.34%) | -11.76(2.57%) |
Model A | -21.18 | -72.98(47.92%) | 131.10 | -66.15(43.44%) | -5.13(3.37%) | -8.03(5.27%) |
Model B | -72.25 | -136.60(47.98%) | 212.49 | -131.44(46.16%) | -8.26(2.90%) | -8.43(2.96%) |
Table 3 Binding energies and energy components of MeP5…C12H26 in models A and B*
Complex | EALMO-EDA/(kJ·mol-1) | EElec/(kJ·mol-1) | EPauli/(kJ·mol-1) | EDisp/(kJ·mol-1) | EPol/(kJ·mol-1) | ECT/(kJ·mol-1) |
---|---|---|---|---|---|---|
MeP5…C12H26 | -124.75 | -210.48(46.06%) | 332.23 | -219.45(48.02%) | -15.28(3.34%) | -11.76(2.57%) |
Model A | -21.18 | -72.98(47.92%) | 131.10 | -66.15(43.44%) | -5.13(3.37%) | -8.03(5.27%) |
Model B | -72.25 | -136.60(47.98%) | 212.49 | -131.44(46.16%) | -8.26(2.90%) | -8.43(2.96%) |
Complex | EALMO-EDA/ (kJ·mol-1) | EElec/(kJ·mol-1) | EPauli/ (kJ·mol-1) | EDisp/(kJ·mol-1) | EPol/(kJ·mol-1) | ECT/(kJ·mol-1) |
---|---|---|---|---|---|---|
MeP5…CH4 | -30.34 | -41.40(43.88%) | 64.01 | -47.75(50.61%) | -2.85(3.02%) | -2.35(2.49%) |
MeP5…C2H6 | -49.62 | -80.48(46.13%) | 124.83 | -83.77(48.02%) | -5.79(3.32%) | -4.41(2.53%) |
MeP5…C3H8 | -65.72 | -84.80(43.68%) | 128.43 | -99.12(51.06%) | -6.19(3.19%) | -4.04(2.08%) |
MeP5…C4H10 | -81.34 | -107.92(43.70%) | 165.62 | -124.55(50.43%) | -8.51(3.44%) | -5.99(2.42%) |
MeP5…C5H12 | -91.17 | -140.68(45.25%) | 219.71 | -150.93(48.55%) | -10.99(3.53%) | -8.28(2.66%) |
MeP5 …C6H14 | -100.28 | -159.50(45.52%) | 250.15 | -168.81(48.17%) | -12.33(3.52%) | -9.79(2.79%) |
MeP5…C7H16 | -106.80 | -181.70(46.40%) | 284.80 | -185.67(47.41%) | -13.49(3.45%) | -10.74(2.74%) |
MeP5…C8H18 | -113.79 | -191.62(46.22%) | 300.76 | -197.79(47.71%) | -14.19(3.42%) | -10.95(2.64%) |
MeP5…C9H20 | -117.48 | -199.39(46.23%) | 313.78 | -206.06(47.78%) | -14.59(3.38%) | -11.22(2.60%) |
MeP5…C10H22 | -121.39 | -204.88(46.09%) | 323.10 | -213.30(47.99%) | -14.85(3.34%) | -11.46(2.58%) |
MeP5…C12H26 | -124.75 | -210.48(46.06%) | 332.23 | -219.45(48.02%) | -15.28(3.34%) | -11.76(2.57%) |
MeP5…C14H30 | -126.53 | -212.03(45.92%) | 335.19 | -222.26(48.14%) | -15.45(3.35%) | -11.98(2.60%) |
MeP5…C16H34 | -126.96 | -212.72(45.92%) | 336.25 | -223.09(48.16%) | -15.50(3.35%) | -11.89(2.57%) |
Table 4 ALMO-EDA energy components calculated with CAM-B3LYP-D3BJ/def2-SVPD*
Complex | EALMO-EDA/ (kJ·mol-1) | EElec/(kJ·mol-1) | EPauli/ (kJ·mol-1) | EDisp/(kJ·mol-1) | EPol/(kJ·mol-1) | ECT/(kJ·mol-1) |
---|---|---|---|---|---|---|
MeP5…CH4 | -30.34 | -41.40(43.88%) | 64.01 | -47.75(50.61%) | -2.85(3.02%) | -2.35(2.49%) |
MeP5…C2H6 | -49.62 | -80.48(46.13%) | 124.83 | -83.77(48.02%) | -5.79(3.32%) | -4.41(2.53%) |
MeP5…C3H8 | -65.72 | -84.80(43.68%) | 128.43 | -99.12(51.06%) | -6.19(3.19%) | -4.04(2.08%) |
MeP5…C4H10 | -81.34 | -107.92(43.70%) | 165.62 | -124.55(50.43%) | -8.51(3.44%) | -5.99(2.42%) |
MeP5…C5H12 | -91.17 | -140.68(45.25%) | 219.71 | -150.93(48.55%) | -10.99(3.53%) | -8.28(2.66%) |
MeP5 …C6H14 | -100.28 | -159.50(45.52%) | 250.15 | -168.81(48.17%) | -12.33(3.52%) | -9.79(2.79%) |
MeP5…C7H16 | -106.80 | -181.70(46.40%) | 284.80 | -185.67(47.41%) | -13.49(3.45%) | -10.74(2.74%) |
MeP5…C8H18 | -113.79 | -191.62(46.22%) | 300.76 | -197.79(47.71%) | -14.19(3.42%) | -10.95(2.64%) |
MeP5…C9H20 | -117.48 | -199.39(46.23%) | 313.78 | -206.06(47.78%) | -14.59(3.38%) | -11.22(2.60%) |
MeP5…C10H22 | -121.39 | -204.88(46.09%) | 323.10 | -213.30(47.99%) | -14.85(3.34%) | -11.46(2.58%) |
MeP5…C12H26 | -124.75 | -210.48(46.06%) | 332.23 | -219.45(48.02%) | -15.28(3.34%) | -11.76(2.57%) |
MeP5…C14H30 | -126.53 | -212.03(45.92%) | 335.19 | -222.26(48.14%) | -15.45(3.35%) | -11.98(2.60%) |
MeP5…C16H34 | -126.96 | -212.72(45.92%) | 336.25 | -223.09(48.16%) | -15.50(3.35%) | -11.89(2.57%) |
Fig.8 Subtracted value between the binding energy, electrostatics, dispersion, polarization and charge transfer of MeP5…CnH2n+2 and MeP5…Cn-1H2n(n=2―10, 12, 14, 16)
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