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All results from a given calculation for C6H5CCH (phenylacetylene)

using model chemistry: CCD/3-21G

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/3-21G
 hartrees
Energy at 0K-305.407759
Energy at 298.15K-305.412515
HF Energy-304.667018
Nuclear repulsion energy296.434361
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/3-21G
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 3445 3349 46.54      
2 A 3185 3097 9.70      
3 A 3167 3079 9.99      
4 A 3152 3064 0.65      
5 A 2200 2139 0.40      
6 A 1625 1580 3.42      
7 A 1541 1499 17.60      
8 A 1242 1207 0.04      
9 A 1215 1181 2.33      
10 A 1062 1033 2.50      
11 A 1025 996 0.60      
12 A 776 754 2.22      
13 A 482 469 0.00      
14 A 935 909 0.00      
15 A 833 810 0.00      
16 A 408 397 0.00      
17 A 941 915 0.14      
18 A 881 857 1.35      
19 A 729 709 111.39      
20 A 675 656 0.26      
21 A 614 597 23.58      
22 A 496 482 14.80      
23 A 325 316 0.34      
24 A 133 129 1.55      
25 A 3175 3087 22.16      
26 A 3158 3070 0.36      
27 A 1595 1551 2.67      
28 A 1495 1454 5.46      
29 A 1388 1350 0.10      
30 A 1258 1223 0.18      
31 A 1172 1140 0.40      
32 A 1106 1075 2.41      
33 A 699 679 39.57      
34 A 658 640 0.96      
35 A 541 526 5.69      
36 A 162 157 1.22      

Unscaled Zero Point Vibrational Energy (zpe) 23745.3 cm-1
Scaled (by 0.9723) Zero Point Vibrational Energy (zpe) 23087.5 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/3-21G
ABC
0.18713 0.05012 0.03953

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.592
C2 0.000 0.000 2.043
C3 0.000 1.220 -0.120
C4 0.000 -1.220 -0.120
C5 0.000 1.217 -1.524
C6 0.000 -1.217 -1.524
C7 0.000 0.000 -2.229
C8 0.000 0.000 3.259
H9 0.000 0.000 4.327
H10 0.000 2.161 0.430
H11 0.000 -2.161 0.430
H12 0.000 2.161 -2.066
H13 0.000 -2.161 -2.066
H14 0.000 0.000 -3.318

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14
C11.45121.41261.41262.44002.44002.82082.66773.73542.16682.16683.42543.42543.9100
C21.45122.48332.48333.76813.76814.27201.21652.28422.69602.69604.64254.64255.3612
C31.41262.48332.44071.40372.81222.43683.59284.61131.08973.42572.16153.90163.4234
C41.41262.48332.44072.81221.40372.43683.59284.61133.42571.08973.90162.16153.4234
C52.44003.76811.40372.81222.43301.40634.93515.97572.17033.90191.08943.42102.1683
C62.44003.76812.81221.40372.43301.40634.93515.97573.90192.17033.42101.08942.1683
C72.82084.27202.43682.43681.40631.40635.48846.55613.42683.42682.16742.16741.0893
C82.66771.21653.59283.59284.93514.93515.48841.06773.55963.55965.74705.74706.5777
H93.73542.28424.61134.61135.97575.97576.55611.06774.45554.45556.74836.74837.6454
H102.16682.69601.08973.42572.17033.90193.42683.55964.45554.32162.49644.99124.3271
H112.16682.69603.42571.08973.90192.17033.42683.55964.45554.32164.99122.49644.3271
H123.42544.64252.16153.90161.08943.42102.16745.74706.74832.49644.99124.32262.4980
H133.42544.64253.90162.16153.42101.08942.16745.74706.74834.99122.49644.32262.4980
H143.91005.36123.42343.42342.16832.16831.08936.57777.64544.32714.32712.49802.4980

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 120.086
C1 C3 H10 119.417 C1 C4 C6 120.086
C1 C4 H11 119.417 C2 C1 C3 120.244
C2 C1 C4 120.244 C2 C8 H9 180.000
C3 C1 C4 119.513 C3 C5 C7 120.272
C3 C5 H12 119.700 C4 C6 C7 120.272
C4 C6 H13 119.700 C5 C3 H10 120.497
C5 C7 C6 119.771 C5 C7 H14 120.115
C6 C4 H11 120.497 C6 C7 H14 120.115
C7 C5 H12 120.028 C7 C6 H13 120.028
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability