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All results from a given calculation for C5H6 (Cyclopropylacetylene)

using model chemistry: QCISD/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 QCISD/6-31G**
 hartrees
Energy at 0K-193.454210
Energy at 298.15K-193.459388
HF Energy-192.740556
Nuclear repulsion energy147.063007
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 QCISD/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 3526 3320 53.06      
2 A 3318 3123 16.45      
3 A 3234 3045 7.83      
4 A 3222 3033 6.52      
5 A 2231 2101 4.80      
6 A 1570 1478 0.23      
7 A 1431 1347 5.89      
8 A 1256 1182 1.31      
9 A 1169 1100 0.52      
10 A 1122 1056 3.85      
11 A 997 938 16.87      
12 A 833 784 1.30      
13 A 778 732 2.57      
14 A 618 581 44.76      
15 A 500 471 2.72      
16 A 200 188 0.64      
17 A 3305 3112 0.10      
18 A 3216 3027 16.34      
19 A 1525 1435 0.59      
20 A 1242 1169 0.46      
21 A 1168 1099 1.47      
22 A 1126 1060 3.68      
23 A 955 899 4.29      
24 A 856 806 7.14      
25 A 562 529 41.19      
26 A 495 466 8.02      
27 A 204 192 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 20327.9 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 19136.7 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 QCISD/6-31G**
ABC
0.52934 0.11068 0.10516

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.642 0.000
C2 -1.085 -0.320 0.000
H3 -0.313 1.679 0.000
C4 1.279 0.331 0.750
C5 1.279 0.331 -0.750
C6 -1.988 -1.133 0.000
H7 -2.781 -1.841 0.000
H8 1.762 1.149 1.267
H9 1.330 -0.622 1.257
H10 1.762 1.149 -1.267
H11 1.330 -0.622 -1.257

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 C6 H7 H8 H9 H10 H11
C11.45061.08301.51491.51492.66523.72862.22882.22422.22882.2242
C21.45062.14342.56472.56471.21462.27803.44582.73983.44582.7398
H31.08302.14342.21622.21623.27344.29962.48813.09392.48813.0939
C41.51492.56472.21621.50023.65794.66571.08131.08082.22932.2225
C51.51492.56472.21621.50023.65794.66572.22932.22251.08131.0808
C62.66521.21463.27343.65793.65791.06344.56923.58504.56923.5850
H73.72862.27804.29964.66574.66571.06345.58494.46915.58494.4691
H82.22883.44582.48811.08132.22934.56925.58491.82282.53343.1131
H92.22422.73983.09391.08082.22253.58504.46911.82283.11312.5139
H102.22883.44582.48812.22931.08134.56925.58492.53343.11311.8228
H112.22422.73983.09392.22251.08083.58504.46913.11312.51391.8228

picture of Cyclopropylacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 179.552 C1 C4 C5 60.321
C1 C4 H8 117.320 C1 C4 H9 116.948
C1 C5 C4 60.321 C1 C5 H10 117.320
C1 C5 H11 116.948 C2 C1 H3 114.788
C2 C1 C4 119.715 C2 C1 C5 119.715
C2 C6 H7 179.740 H3 C1 C4 116.103
H3 C1 C5 116.103 C4 C1 C5 59.357
C4 C5 H10 118.540 C4 C5 H11 117.968
C5 C4 H8 118.540 C5 C4 H9 117.968
H8 C4 H9 114.936 H10 C5 H11 114.936
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability