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All results from a given calculation for C6H5CCH (phenylacetylene)

using model chemistry: MP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-31G*
 hartrees
Energy at 0K-307.379802
Energy at 298.15K-307.384097
HF Energy-306.374140
Nuclear repulsion energy298.116788
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 MP2/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3518 3318 70.05      
2 A1 3249 3064 9.21      
3 A1 3237 3052 8.79      
4 A1 3222 3038 0.68      
5 A1 2157 2034 0.77      
6 A1 1675 1579 3.65      
7 A1 1549 1460 18.93      
8 A1 1245 1174 1.35      
9 A1 1230 1160 0.06      
10 A1 1069 1008 3.79      
11 A1 1028 969 0.39      
12 A1 782 737 1.90      
13 A1 473 446 0.24      
14 A2 888 838 0.00      
15 A2 824 777 0.00      
16 A2 393 370 0.00      
17 B1 893 842 0.22      
18 B1 862 813 0.77      
19 B1 724 683 92.53      
20 B1 560 528 9.70      
21 B1 488 460 0.54      
22 B1 404 381 23.54      
23 B1 284 267 8.64      
24 B1 136 128 0.37      
25 B2 3243 3058 18.65      
26 B2 3229 3045 1.27      
27 B2 1647 1553 2.04      
28 B2 1504 1419 5.74      
29 B2 1454 1371 0.21      
30 B2 1359 1282 0.04      
31 B2 1216 1147 0.01      
32 B2 1123 1059 3.73      
33 B2 638 602 0.01      
34 B2 579 546 45.36      
35 B2 511 482 1.18      
36 B2 156 147 0.59      

Unscaled Zero Point Vibrational Energy (zpe) 23772.9 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 22417.9 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 MP2/6-31G*
ABC
0.18916 0.05078 0.04003

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.589
C2 0.000 0.000 2.020
C3 0.000 1.214 -0.120
C4 0.000 -1.214 -0.120
C5 0.000 1.209 -1.513
C6 0.000 -1.209 -1.513
C7 0.000 0.000 -2.214
C8 0.000 0.000 3.244
H9 0.000 0.000 4.311
H10 0.000 2.151 0.431
H11 0.000 -2.151 0.431
H12 0.000 2.152 -2.054
H13 0.000 -2.152 -2.054
H14 0.000 0.000 -3.302

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14
C11.43131.40561.40562.42522.42522.80342.65473.72142.15712.15713.40863.40863.8908
C21.43132.46032.46033.73483.73484.23471.22342.29012.67462.67464.60814.60815.3221
C31.40562.46032.42741.39372.79472.42083.57594.59351.08753.40982.15013.88213.4056
C41.40562.46032.42742.79471.39372.42083.57594.59353.40981.08753.88212.15013.4056
C52.42523.73481.39372.79472.41741.39724.90845.94802.16113.88221.08743.40392.1585
C62.42523.73482.79471.39372.41741.39724.90845.94803.88222.16113.40391.08742.1585
C72.80344.23472.42082.42081.39721.39725.45826.52483.40993.40992.15792.15791.0874
C82.65471.22343.57593.57594.90844.90845.45821.06673.54103.54105.71855.71856.5455
H93.72142.29014.59354.59355.94805.94806.52481.06674.43584.43586.71886.71887.6122
H102.15712.67461.08753.40982.16113.88223.40993.54104.43584.30252.48564.96954.3085
H112.15712.67463.40981.08753.88222.16113.40993.54104.43584.30254.96952.48564.3085
H123.40864.60812.15013.88211.08743.40392.15795.71856.71882.48564.96954.30392.4873
H133.40864.60813.88212.15013.40391.08742.15795.71856.71884.96952.48564.30392.4873
H143.89085.32213.40563.40562.15852.15851.08746.54557.61224.30854.30852.48732.4873

picture of phenylacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C8 180.000 C1 C3 C5 120.080
C1 C3 H10 119.271 C1 C4 C6 120.080
C1 C4 H11 119.271 C2 C1 C3 120.286
C2 C1 C4 120.286 C2 C8 H9 180.000
C3 C1 C4 119.428 C3 C5 C7 120.316
C3 C5 H12 119.626 C4 C6 C7 120.316
C4 C6 H13 119.626 C5 C3 H10 120.649
C5 C7 C6 119.781 C5 C7 H14 120.110
C6 C4 H11 120.649 C6 C7 H14 120.110
C7 C5 H12 120.058 C7 C6 H13 120.058
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability