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All results from a given calculation for C6H5CCH (phenylacetylene)

using model chemistry: CCD/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 CCD/6-31G*
 hartrees
Energy at 0K-307.408788
Energy at 298.15K-307.413356
HF Energy-306.375663
Nuclear repulsion energy298.280737
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 CCD/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 3501 3313 59.78      
2 A1 3234 3061 7.59      
3 A1 3222 3049 15.41      
4 A1 3204 3033 0.40      
5 A1 2248 2127 0.06      
6 A1 1706 1615 3.24      
7 A1 1568 1484 18.61      
8 A1 1250 1183 1.40      
9 A1 1233 1167 0.00      
10 A1 1076 1018 3.56      
11 A1 1037 981 0.31      
12 A1 786 744 2.23      
13 A1 476 451 0.16      
14 A2 919 870 0.00      
15 A2 843 798 0.00      
16 A2 401 380 0.00      
17 B1 916 867 0.40      
18 B1 884 837 1.24      
19 B1 738 698 91.78      
20 B1 597 565 5.87      
21 B1 543 514 4.45      
22 B1 456 431 31.30      
23 B1 339 321 0.61      
24 B1 142 134 0.85      
25 B2 3229 3056 22.14      
26 B2 3212 3041 3.16      
27 B2 1676 1587 1.77      
28 B2 1515 1434 5.83      
29 B2 1375 1301 0.08      
30 B2 1316 1246 0.51      
31 B2 1209 1144 0.07      
32 B2 1130 1069 3.43      
33 B2 645 610 0.12      
34 B2 612 580 46.20      
35 B2 528 500 0.31      
36 B2 161 152 0.67      

Unscaled Zero Point Vibrational Energy (zpe) 23962.5 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 22680.5 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 CCD/6-31G*
ABC
0.18949 0.05079 0.04005

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.587
C2 0.000 0.000 2.028
C3 0.000 1.212 -0.120
C4 0.000 -1.212 -0.120
C5 0.000 1.208 -1.513
C6 0.000 -1.208 -1.513
C7 0.000 0.000 -2.213
C8 0.000 0.000 3.238
H9 0.000 0.000 4.307
H10 0.000 2.150 0.431
H11 0.000 -2.150 0.431
H12 0.000 2.152 -2.055
H13 0.000 -2.152 -2.055
H14 0.000 0.000 -3.301

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14
C11.44071.40341.40342.42252.42252.79972.65093.71992.15612.15613.40733.40733.8881
C21.44072.46632.46633.74103.74104.24041.21012.27922.67842.67844.61494.61495.3288
C31.40342.46632.42441.39292.79232.41833.57014.58991.08803.40752.15083.88093.4042
C41.40342.46632.42442.79231.39292.41833.57014.58993.40751.08803.88092.15083.4042
C52.42253.74101.39292.79232.41581.39594.90195.94382.16033.88031.08863.40332.1579
C62.42253.74102.79231.39292.41581.39594.90195.94383.88032.16033.40331.08862.1579
C72.79974.24042.41832.41831.39591.39595.45056.51963.40783.40782.15782.15781.0884
C82.65091.21013.57013.57014.90194.90195.45051.06903.53603.53605.71345.71346.5390
H93.71992.27924.58994.58995.94385.94386.51961.06904.43254.43256.71576.71577.6080
H102.15612.67841.08803.40752.16033.88033.40783.53604.43254.30082.48564.96894.3072
H112.15612.67843.40751.08803.88032.16033.40783.53604.43254.30084.96892.48564.3072
H123.40734.61492.15083.88091.08863.40332.15785.71346.71572.48564.96894.30412.4869
H133.40734.61493.88092.15083.40331.08862.15785.71346.71574.96892.48564.30412.4869
H143.88815.32883.40423.40422.15792.15791.08846.53907.60804.30724.30722.48692.4869

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 120.076
C1 C3 H10 119.319 C1 C4 C6 120.076
C1 C4 H11 119.319 C2 C1 C3 120.255
C2 C1 C4 120.255 C2 C8 H9 180.000
C3 C1 C4 119.490 C3 C5 C7 120.263
C3 C5 H12 119.668 C4 C6 C7 120.263
C4 C6 H13 119.668 C5 C3 H10 120.604
C5 C7 C6 119.832 C5 C7 H14 120.084
C6 C4 H11 120.604 C6 C7 H14 120.084
C7 C5 H12 120.069 C7 C6 H13 120.069
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability