return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C5H6 (Cyclopropylacetylene)

using model chemistry: B3PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-193.980780
Energy at 298.15K-193.985970
Nuclear repulsion energy147.577016
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 B3PW91/6-31G(2df,p)
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 3510 3374 75.54      
2 A 3257 3131 8.75      
3 A 3163 3041 6.34      
4 A 3157 3035 5.49      
5 A 2239 2153 15.43      
6 A 1496 1438 0.60      
7 A 1381 1327 3.73      
8 A 1226 1179 1.17      
9 A 1136 1092 0.45      
10 A 1060 1019 4.71      
11 A 983 945 19.69      
12 A 812 781 0.93      
13 A 762 732 1.57      
14 A 657 631 42.59      
15 A 504 484 5.70      
16 A 201 193 0.84      
17 A 3242 3117 0.08      
18 A 3153 3031 15.12      
19 A 1460 1403 2.20      
20 A 1197 1150 0.46      
21 A 1113 1070 1.24      
22 A 1073 1032 5.00      
23 A 912 877 2.94      
24 A 827 795 6.17      
25 A 593 570 49.56      
26 A 519 499 0.03      
27 A 209 201 0.93      

Unscaled Zero Point Vibrational Energy (zpe) 19918.5 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 19149.7 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 B3PW91/6-31G(2df,p)
ABC
0.53297 0.11176 0.10609

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.631 0.000
C2 -1.081 -0.308 0.000
H3 -0.304 1.674 0.000
C4 1.280 0.314 0.748
C5 1.280 0.314 -0.748
C6 -1.993 -1.095 0.000
H7 -2.798 -1.790 0.000
H8 1.764 1.133 1.268
H9 1.326 -0.641 1.258
H10 1.764 1.133 -1.268
H11 1.326 -0.641 -1.258

Atom - Atom Distances (Å)
  C1 C2 H3 C4 C5 C6 H7 H8 H9 H10 H11
C11.43221.08661.51631.51632.63663.69972.22972.22712.22972.2271
C21.43222.12942.55432.55431.20442.26753.43252.73723.43252.7372
H31.08662.12942.21782.21783.24414.26862.48483.09832.48483.0983
C41.51632.55432.21781.49533.64144.64931.08451.08372.22882.2221
C51.51632.55432.21781.49533.64144.64932.22882.22211.08451.0837
C62.63661.20443.24413.64143.64141.06314.54853.57884.54853.5788
H73.69972.26754.26864.64934.64931.06315.56444.46235.56444.4623
H82.22973.43252.48481.08452.22884.54855.56441.82742.53573.1179
H92.22712.73723.09831.08372.22213.57884.46231.82743.11792.5168
H102.22973.43252.48482.22881.08454.54855.56442.53573.11791.8274
H112.22712.73723.09832.22211.08373.57884.46233.11792.51681.8274

picture of Cyclopropylacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 179.855 C1 C4 C5 60.457
C1 C4 H8 117.067 C1 C4 H9 116.898
C1 C5 C4 60.457 C1 C5 H10 117.067
C1 C5 H11 116.898 C2 C1 H3 114.745
C2 C1 C4 120.039 C2 C1 C5 120.039
C2 C6 H7 179.974 H3 C1 C4 115.891
H3 C1 C5 115.891 C4 C1 C5 59.086
C4 C5 H10 118.666 C4 C5 H11 118.119
C5 C4 H8 118.666 C5 C4 H9 118.119
H8 C4 H9 114.882 H10 C5 H11 114.882
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.194      
2 C 0.314      
3 H 0.144      
4 C -0.299      
5 C -0.299      
6 C -0.491      
7 H 0.217      
8 H 0.147      
9 H 0.157      
10 H 0.147      
11 H 0.157      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.808 0.384 0.000 0.895
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.378 2.536 0.000
y 2.536 -26.781 0.000
z 0.000 0.000 -30.627
Traceless
 xyz
x 0.326 2.536 0.000
y 2.536 2.721 0.000
z 0.000 0.000 -3.048
Polar
3z2-r2-6.096
x2-y2-1.597
xy2.536
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.097 2.240 0.000
y 2.240 6.916 0.000
z 0.000 0.000 5.652


<r2> (average value of r2) Å2
<r2> 119.868
(<r2>)1/2 10.948