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All results from a given calculation for C5H6 (Cyclopropylacetylene)

using model chemistry: CCD/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at CCD/6-31+G**
 hartrees
Energy at 0K-193.457724
Energy at 298.15K-193.462934
HF Energy-192.747363
Nuclear repulsion energy147.078986
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/6-31+G**
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 3527 3324 58.12      
2 A 3322 3131 13.55      
3 A 3242 3055 5.65      
4 A 3225 3039 5.65      
5 A 2241 2111 10.64      
6 A 1569 1478 0.58      
7 A 1429 1347 5.20      
8 A 1257 1184 0.94      
9 A 1169 1101 0.41      
10 A 1122 1057 5.16      
11 A 997 939 21.22      
12 A 835 787 1.24      
13 A 778 733 3.33      
14 A 637 600 57.20      
15 A 505 475 6.70      
16 A 198 186 1.58      
17 A 3310 3119 0.14      
18 A 3219 3033 15.29      
19 A 1522 1434 1.14      
20 A 1241 1169 0.80      
21 A 1166 1098 1.51      
22 A 1128 1063 4.31      
23 A 954 899 5.61      
24 A 860 810 9.00      
25 A 580 546 64.60      
26 A 504 475 1.27      
27 A 201 189 1.28      

Unscaled Zero Point Vibrational Energy (zpe) 20366.2 cm-1
Scaled (by 0.9423) Zero Point Vibrational Energy (zpe) 19191.1 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/6-31+G**
ABC
0.53017 0.11068 0.10511

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.640 0.000
C2 -1.083 -0.324 0.000
H3 -0.317 1.675 0.000
C4 1.279 0.332 0.751
C5 1.279 0.332 -0.751
C6 -1.989 -1.131 0.000
H7 -2.785 -1.837 0.000
H8 1.761 1.152 1.265
H9 1.334 -0.621 1.258
H10 1.761 1.152 -1.265
H11 1.334 -0.621 -1.258

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 C6 H7 H8 H9 H10 H11
C11.45011.08261.51481.51482.66363.72742.22802.22482.22802.2248
C21.45012.14102.56422.56421.21352.27743.44512.74083.44512.7408
H31.08262.14102.21692.21693.26704.29302.48833.09472.48833.0947
C41.51482.56422.21691.50123.65904.66781.08121.08082.22902.2236
C51.51482.56422.21691.50123.65904.66782.22902.22361.08121.0808
C62.66361.21353.26703.65903.65901.06384.56923.58964.56923.5896
H73.72742.27744.29304.66784.66781.06385.58594.47515.58594.4751
H82.22803.44512.48831.08122.22904.56925.58591.82342.53093.1131
H92.22482.74083.09471.08082.22363.58964.47511.82343.11312.5155
H102.22803.44512.48832.22901.08124.56925.58592.53093.11311.8234
H112.22482.74083.09472.22361.08083.58964.47513.11312.51551.8234

picture of Cyclopropylacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 179.959 C1 C4 C5 60.296
C1 C4 H8 117.260 C1 C4 H9 117.017
C1 C5 C4 60.296 C1 C5 H10 117.260
C1 C5 H11 117.017 C2 C1 H3 114.644
C2 C1 C4 119.724 C2 C1 C5 119.724
C2 C6 H7 179.884 H3 C1 C4 116.198
H3 C1 C5 116.198 C4 C1 C5 59.407
C4 C5 H10 118.437 C4 C5 H11 117.987
C5 C4 H8 118.437 C5 C4 H9 117.987
H8 C4 H9 114.994 H10 C5 H11 114.994
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability