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/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at PBEPBE/6-31G**
 hartrees
Energy at 0K-234.279500
Energy at 298.15K-234.288234
Nuclear repulsion energy205.221187
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/6-31G**
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 3064 3022 29.57      
2 A 3035 2993 11.48      
3 A 2990 2949 29.25      
4 A 2978 2937 24.52      
5 A 2966 2926 42.16      
6 A 2945 2905 27.22      
7 A 2304 2272 0.02      
8 A 1472 1452 4.13      
9 A 1457 1437 0.60      
10 A 1441 1422 5.99      
11 A 1434 1414 1.09      
12 A 1377 1358 1.77      
13 A 1374 1355 5.30      
14 A 1341 1323 2.04      
15 A 1263 1246 13.84      
16 A 1161 1145 1.97      
17 A 1082 1067 3.46      
18 A 1032 1017 0.78      
19 A 1014 1000 1.76      
20 A 879 867 3.67      
21 A 760 749 0.30      
22 A 463 457 1.49      
23 A 326 321 0.13      
24 A 267 263 5.41      
25 A 98 97 1.44      
26 A 3056 3014 52.29      
27 A 3034 2992 11.60      
28 A 3028 2987 5.26      
29 A 2977 2936 10.48      
30 A 1465 1445 6.95      
31 A 1441 1421 5.62      
32 A 1284 1267 0.02      
33 A 1219 1203 0.13      
34 A 1085 1070 0.80      
35 A 1014 1000 1.98      
36 A 847 836 0.64      
37 A 726 716 3.72      
38 A 347 343 0.00      
39 A 243 240 0.03      
40 A 216 213 7.79      
41 A 83 82 0.34      
42 A 25 25 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 30304.4 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 29889.2 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 PBEPBE/6-31G**
ABC
0.59336 0.03951 0.03811

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.240 -2.834 0.000
C2 -1.750 2.861 0.000
C3 0.934 -0.295 0.000
C4 0.000 0.830 0.000
C5 0.238 -1.675 0.000
C6 -0.800 1.753 0.000
H7 0.726 -3.808 0.000
H8 -2.793 2.498 0.000
H9 1.892 -2.800 0.890
H10 1.892 -2.800 -0.890
H11 -0.421 -1.740 -0.883
H12 -0.421 -1.740 0.883
H13 1.601 -0.227 -0.882
H14 1.601 -0.227 0.882
H15 -1.625 3.502 0.890
H16 -1.625 3.502 -0.890

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16
C16.43152.55703.86771.53115.02011.10186.68521.10361.10362.17592.17592.77592.77597.00997.0099
C26.43154.14302.68074.95271.45887.11351.10406.78986.78984.86934.86934.64104.64101.10401.1040
C32.55704.14301.46241.54592.68413.51944.65782.82582.82582.16902.16901.10781.10784.66464.6646
C43.86772.68071.46242.51671.22194.69463.25324.18934.18932.74972.74972.11142.11143.25133.2513
C51.53114.95271.54592.51673.58262.18775.15842.18882.18881.10411.10412.17572.17575.57405.5740
C65.02011.45882.68411.22193.58265.76702.12735.36425.36423.62293.62293.23493.23492.12832.1283
H71.10187.11353.51944.69462.18775.76707.22161.77981.77982.52442.52443.79103.79107.73027.7302
H86.68521.10404.65783.25325.15842.12737.22167.12847.12844.93634.93635.24505.24501.77881.7788
H91.10366.78982.82584.18932.18885.36421.77987.12841.77943.10122.54463.13812.59017.21717.4332
H101.10366.78982.82584.18932.18885.36421.77987.12841.77942.54463.10122.59013.13817.43327.2171
H112.17594.86932.16902.74971.10413.62292.52444.93633.10122.54461.76602.52563.08135.66295.3783
H122.17594.86932.16902.74971.10413.62292.52444.93632.54463.10121.76603.08132.52565.37835.6629
H132.77594.64101.10782.11142.17573.23493.79105.24503.13812.59012.52563.08131.76445.23914.9304
H142.77594.64101.10782.11142.17573.23493.79105.24502.59013.13813.08132.52561.76444.93045.2391
H157.00991.10404.66463.25135.57402.12837.73021.77887.21717.43325.66295.37835.23914.93041.7794
H167.00991.10404.66463.25135.57402.12837.73021.77887.43327.21715.37835.66294.93045.23911.7794

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 112.404 C1 C5 H11 110.277
C1 C5 H12 110.277 C2 C6 C4 179.700
C3 C4 C6 178.795 C3 C5 H11 108.728
C3 C5 H12 108.728 C4 C3 C5 113.532
C4 C3 H13 109.695 C4 C3 H14 109.695
C5 C1 H7 111.344 C5 C1 H9 111.321
C5 C1 H10 111.321 C5 C3 H13 109.024
C5 C3 H14 109.024 C6 C2 H8 111.461
C6 C2 H15 111.537 C6 C2 H16 111.537
H7 C1 H9 107.607 H7 C1 H10 107.607
H8 C2 H15 107.338 H8 C2 H16 107.338
H9 C1 H10 107.441 H11 C5 H12 106.216
H13 C3 H14 105.560 H15 C2 H16 107.391
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.365      
2 C -0.480      
3 C -0.336      
4 C 0.093      
5 C -0.213      
6 C -0.041      
7 H 0.121      
8 H 0.152      
9 H 0.120      
10 H 0.120      
11 H 0.125      
12 H 0.125      
13 H 0.137      
14 H 0.137      
15 H 0.152      
16 H 0.152      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.127 -0.083 0.000 0.152
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.706 -3.096 0.000
y -3.096 -34.360 0.000
z 0.000 0.000 -38.039
Traceless
 xyz
x 0.494 -3.096 0.000
y -3.096 2.512 0.000
z 0.000 0.000 -3.006
Polar
3z2-r2-6.013
x2-y2-1.346
xy-3.096
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.747 -3.458 0.000
y -3.458 12.567 0.000
z 0.000 0.000 7.061


<r2> (average value of r2) Å2
<r2> 296.386
(<r2>)1/2 17.216