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All results from a given calculation for C5H6 (Cyclopropylacetylene)

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 C1 1A'
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-193.102753
Energy at 298.15K-193.107795
HF Energy-192.649994
Nuclear repulsion energy145.318927
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 A 3483 3332 43.79      
2 A 3286 3144 18.77      
3 A 3195 3057 7.42      
4 A 3186 3048 5.20      
5 A 2120 2029 2.49      
6 A 1564 1496 0.54      
7 A 1423 1362 3.62      
8 A 1238 1185 0.39      
9 A 1174 1123 2.64      
10 A 1159 1109 8.54      
11 A 979 936 16.87      
12 A 847 811 0.53      
13 A 763 730 3.98      
14 A 596 571 61.35      
15 A 508 486 2.85      
16 A 191 183 0.75      
17 A 3270 3129 0.17      
18 A 3180 3043 13.72      
19 A 1547 1480 2.24      
20 A 1256 1202 0.74      
21 A 1199 1147 1.57      
22 A 1162 1112 7.75      
23 A 952 910 0.87      
24 A 852 816 14.80      
25 A 544 521 40.16      
26 A 453 433 22.97      
27 A 154 147 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 20140.5 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 19270.4 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
0.51803 0.10779 0.10232

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.639 0.000
C2 -1.108 -0.307 0.000
H3 -0.297 1.687 0.000
C4 1.300 0.331 0.760
C5 1.300 0.331 -0.760
C6 -2.019 -1.141 0.000
H7 -2.826 -1.844 0.000
H8 1.784 1.151 1.286
H9 1.359 -0.628 1.270
H10 1.784 1.151 -1.286
H11 1.359 -0.628 -1.270

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 C6 H7 H8 H9 H10 H11
C11.45681.08961.53721.53722.69173.76112.25802.25072.25802.2507
C21.45682.15232.60492.60491.23532.30453.48472.79403.48472.7940
H31.08962.15232.22922.22923.31084.34232.50473.11722.50473.1172
C41.53722.60492.22921.52013.71004.72541.08761.08762.25672.2460
C51.53722.60492.22921.52013.71004.72542.25672.24601.08761.0876
C62.69171.23533.31083.71003.71001.06944.62293.64604.62293.6460
H73.76112.30454.34234.72544.72541.06945.64524.53955.64524.5395
H82.25803.48472.50471.08762.25674.62295.64521.82852.57213.1429
H92.25072.79403.11721.08762.24603.64604.53951.82853.14292.5406
H102.25803.48472.50472.25671.08764.62295.64522.57213.14291.8285
H112.25072.79403.11722.24601.08763.64604.53953.14292.54061.8285

picture of Cyclopropylacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 177.997 C1 C4 C5 60.369
C1 C4 H8 117.665 C1 C4 H9 117.031
C1 C5 C4 60.369 C1 C5 H10 117.665
C1 C5 H11 117.031 C2 C1 H3 114.625
C2 C1 C4 120.899 C2 C1 C5 120.899
C2 C6 H7 178.593 H3 C1 C4 115.059
H3 C1 C5 115.059 C4 C1 C5 59.263
C4 C5 H10 118.924 C4 C5 H11 117.980
C5 C4 H8 118.924 C5 C4 H9 117.980
H8 C4 H9 114.418 H10 C5 H11 114.418
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability