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All results from a given calculation for C6H10 (2-Hexyne)

using model chemistry: MP2/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at MP2/CEP-31G*
 hartrees
Energy at 0K-39.399424
Energy at 298.15K-39.407902
HF Energy-38.669298
Nuclear repulsion energy111.347505
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2/CEP-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3188 3027 16.16      
2 A 3179 3018 38.38      
3 A 3106 2949 31.72      
4 A 3091 2934 37.55      
5 A 3085 2929 30.39      
6 A 3079 2923 32.29      
7 A 2253 2139 0.02      
8 A 1531 1453 7.44      
9 A 1516 1440 0.39      
10 A 1510 1433 1.75      
11 A 1509 1432 8.70      
12 A 1447 1374 1.37      
13 A 1444 1371 4.82      
14 A 1415 1344 3.99      
15 A 1313 1246 10.09      
16 A 1181 1121 0.84      
17 A 1138 1081 3.60      
18 A 1079 1025 0.78      
19 A 1062 1008 0.47      
20 A 914 868 3.80      
21 A 756 718 0.14      
22 A 453 430 3.03      
23 A 314 298 0.80      
24 A 217 206 6.40      
25 A 82 78 1.33      
26 A 3189 3028 17.73      
27 A 3185 3024 82.50      
28 A 3166 3005 1.77      
29 A 3145 2986 5.33      
30 A 1529 1452 8.79      
31 A 1510 1433 7.93      
32 A 1353 1285 0.00      
33 A 1283 1218 0.01      
34 A 1131 1073 0.49      
35 A 1056 1002 0.51      
36 A 875 830 0.31      
37 A 746 708 3.86      
38 A 239 227 0.20      
39 A 218 207 10.42      
40 A 200 189 0.10      
41 A 77 73 0.57      
42 A 22 21 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 31390.5 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 29802.2 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2/CEP-31G*
ABC
0.54907 0.03912 0.03756

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.389 -2.734 0.000
C2 -2.002 2.784 0.000
C3 1.008 -0.204 0.000
C4 0.000 0.891 0.000
C5 0.339 -1.601 0.000
C6 -0.944 1.731 0.000
H7 0.903 -3.725 0.000
H8 -3.004 2.322 0.000
H9 2.036 -2.669 0.894
H10 2.036 -2.669 -0.894
H11 -0.313 -1.682 -0.888
H12 -0.313 -1.682 0.888
H13 1.658 -0.103 -0.890
H14 1.658 -0.103 0.890
H15 -1.910 3.422 0.896
H16 -1.910 3.422 -0.896

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
C16.47632.55803.88171.54465.03731.10426.69801.10531.10532.18932.18932.79012.79017.04117.0411
C26.47634.24152.75514.97071.49267.12781.10406.84416.84414.85664.85664.74554.74551.10371.1037
C32.55804.24151.48881.54912.74893.52254.74182.81622.81622.17252.17251.10611.10614.74024.7402
C43.88172.75511.48882.51501.26364.70363.32774.19764.19762.74002.74002.12802.12803.29503.2950
C51.54464.97071.54912.51503.57022.19775.15442.19572.19571.10501.10502.18542.18545.57585.5758
C65.03731.49262.74891.26363.57025.75992.14335.38895.38893.58243.58243.30533.30532.14392.1439
H71.10427.12783.52254.70362.19775.75997.19961.78841.78842.53822.53823.80543.80547.73267.7326
H86.69801.10404.74183.32775.15442.14337.19967.14987.14984.90564.90565.33005.33001.79121.7912
H91.10536.84412.81624.19762.19575.38891.78847.14981.78713.10982.54853.14772.59397.25777.4752
H101.10536.84412.81624.19762.19575.38891.78847.14981.78712.54853.10982.59393.14777.47527.2577
H112.18934.85662.17252.74001.10503.58242.53824.90563.10982.54851.77702.52563.08875.63775.3477
H122.18934.85662.17252.74001.10503.58242.53824.90562.54853.10981.77703.08872.52565.34775.6377
H132.79014.74551.10612.12802.18543.30533.80545.33003.14772.59392.52563.08871.77925.32415.0156
H142.79014.74551.10612.12802.18543.30533.80545.33002.59393.14773.08872.52561.77925.01565.3241
H157.04111.10374.74023.29505.57582.14397.73261.79127.25777.47525.63775.34775.32415.01561.7926
H167.04111.10374.74023.29505.57582.14397.73261.79127.47527.25775.34775.63775.01565.32411.7926

picture of 2-Hexyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 C3 111.548 C1 C5 H11 110.332
C1 C5 H12 110.332 C2 C6 C4 176.743
C3 C4 C6 174.280 C3 C5 H11 108.728
C3 C5 H12 108.728 C4 C3 C5 111.746
C4 C3 H13 109.296 C4 C3 H14 109.296
C5 C1 H7 111.039 C5 C1 H9 110.819
C5 C1 H10 110.819 C5 C3 H13 109.654
C5 C3 H14 109.654 C6 C2 H8 110.365
C6 C2 H15 110.437 C6 C2 H16 110.437
H7 C1 H9 108.080 H7 C1 H10 108.080
H8 C2 H15 108.464 H8 C2 H16 108.464
H9 C1 H10 107.882 H11 C5 H12 107.045
H13 C3 H14 107.079 H15 C2 H16 108.611
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability