return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: PBEPBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at PBEPBE/6-31+G**
 hartrees
Energy at 0K-234.289315
Energy at 298.15K-234.298049
Nuclear repulsion energy204.998953
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 PBEPBE/6-31+G**
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 3055 3020 32.00      
2 A 3033 2998 8.63      
3 A 2983 2949 31.01      
4 A 2971 2937 30.93      
5 A 2965 2931 47.57      
6 A 2945 2911 26.05      
7 A 2286 2260 0.01      
8 A 1461 1444 7.48      
9 A 1448 1431 1.02      
10 A 1433 1417 8.46      
11 A 1426 1409 1.24      
12 A 1368 1353 3.68      
13 A 1367 1351 2.06      
14 A 1333 1318 1.61      
15 A 1259 1245 9.35      
16 A 1154 1141 2.20      
17 A 1077 1065 2.87      
18 A 1028 1016 0.93      
19 A 1011 1000 0.98      
20 A 875 865 4.17      
21 A 756 747 0.24      
22 A 460 455 2.24      
23 A 326 322 0.08      
24 A 265 262 8.28      
25 A 98 97 2.36      
26 A 3048 3013 54.83      
27 A 3032 2998 8.82      
28 A 3021 2987 3.88      
29 A 2976 2942 7.37      
30 A 1456 1439 9.95      
31 A 1433 1417 7.87      
32 A 1279 1265 0.00      
33 A 1214 1200 0.15      
34 A 1081 1069 0.33      
35 A 1011 999 1.11      
36 A 845 836 0.74      
37 A 723 715 2.71      
38 A 345 342 0.01      
39 A 241 238 0.09      
40 A 212 210 12.29      
41 A 82 81 0.53      
42 A 34 34 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 30207.0 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 29862.6 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 PBEPBE/6-31+G**
ABC
0.59646 0.03936 0.03798

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.230 -2.843 0.000
C2 -1.733 2.879 0.000
C3 0.929 -0.303 0.000
C4 0.000 0.828 0.000
C5 0.230 -1.682 0.000
C6 -0.793 1.761 0.000
H7 0.712 -3.817 0.000
H8 -2.779 2.524 0.000
H9 1.882 -2.812 0.891
H10 1.882 -2.812 -0.891
H11 -0.429 -1.746 -0.884
H12 -0.429 -1.746 0.884
H13 1.594 -0.235 -0.883
H14 1.594 -0.235 0.883
H15 -1.599 3.518 0.891
H16 -1.599 3.518 -0.891

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
C16.44412.55833.87231.53275.02921.10256.69921.10431.10432.17692.17692.77832.77837.01857.0185
C26.44414.14892.68514.96561.46097.12851.10416.80086.80084.88594.88594.64214.64211.10411.1041
C32.55834.14891.46391.54642.68803.52084.66272.82792.82792.17022.17021.10791.10794.66714.6671
C43.87232.68511.46392.52091.22434.69953.25544.19374.19372.75552.75552.11012.11013.25323.2532
C51.53274.96561.54642.52093.59172.18875.17132.19082.19081.10461.10462.17662.17665.58345.5834
C65.02921.46092.68801.22433.59175.77742.12735.37225.37223.63483.63483.23473.23472.12812.1281
H71.10257.12853.52084.69952.18875.77747.23841.78081.78082.52462.52463.79363.79367.74147.7414
H86.69921.10414.66273.25545.17132.12737.23847.14067.14064.95324.95325.24565.24561.78081.7808
H91.10436.80082.82794.19372.19085.37221.78087.14061.78143.10292.54523.14202.59347.22377.4401
H101.10436.80082.82794.19372.19085.37221.78087.14061.78142.54523.10292.59343.14207.44017.2237
H112.17694.88592.17022.75551.10463.63482.52464.95323.10292.54521.76832.52583.08285.67655.3919
H122.17694.88592.17022.75551.10463.63482.52464.95322.54523.10291.76833.08282.52585.39195.6765
H132.77834.64211.10792.11012.17663.23473.79365.24563.14202.59342.52583.08281.76655.23704.9274
H142.77834.64211.10792.11012.17663.23473.79365.24562.59343.14203.08282.52581.76654.92745.2370
H157.01851.10414.66713.25325.58342.12817.74141.78087.22377.44015.67655.39195.23704.92741.7814
H167.01851.10414.66713.25325.58342.12817.74141.78087.44017.22375.39195.67654.92745.23701.7814

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 112.375 C1 C5 H11 110.212
C1 C5 H12 110.212 C2 C6 C4 179.683
C3 C4 C6 179.022 C3 C5 H11 108.752
C3 C5 H12 108.752 C4 C3 C5 113.705
C4 C3 H13 109.488 C4 C3 H14 109.488
C5 C1 H7 111.265 C5 C1 H9 111.328
C5 C1 H10 111.328 C5 C3 H13 109.058
C5 C3 H14 109.058 C6 C2 H8 111.309
C6 C2 H15 111.379 C6 C2 H16 111.379
H7 C1 H9 107.599 H7 C1 H10 107.599
H8 C2 H15 107.503 H8 C2 H16 107.503
H9 C1 H10 107.526 H11 C5 H12 106.339
H13 C3 H14 105.737 H15 C2 H16 107.563
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.656      
2 C -1.156      
3 C -1.148      
4 C 0.791      
5 C -0.140      
6 C 0.486      
7 H 0.171      
8 H 0.194      
9 H 0.169      
10 H 0.169      
11 H 0.177      
12 H 0.177      
13 H 0.189      
14 H 0.189      
15 H 0.194      
16 H 0.194      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.153 -0.096 0.000 0.181
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.024 -3.250 0.000
y -3.250 -35.373 0.000
z 0.000 0.000 -39.237
Traceless
 xyz
x 0.281 -3.250 0.000
y -3.250 2.757 0.000
z 0.000 0.000 -3.039
Polar
3z2-r2-6.077
x2-y2-1.651
xy-3.250
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.108 -3.496 0.000
y -3.496 14.000 0.000
z 0.000 0.000 8.177


<r2> (average value of r2) Å2
<r2> 297.991
(<r2>)1/2 17.262