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All results from a given calculation for C5H6 (1,3-Cyclopentadiene)

using model chemistry: mPW1PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-192.991080
Energy at 298.15K-192.997377
HF Energy-192.991080
Nuclear repulsion energy156.230946
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 mPW1PW91/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3293 3127 2.85      
2 A1 3263 3098 4.81      
3 A1 3072 2917 2.57      
4 A1 1570 1491 0.56      
5 A1 1463 1389 18.36      
6 A1 1412 1341 11.66      
7 A1 1165 1106 0.43      
8 A1 1011 960 0.04      
9 A1 921 874 11.56      
10 A1 849 806 0.00      
11 A2 1183 1123 0.00      
12 A2 988 939 0.00      
13 A2 742 705 0.00      
14 A2 539 512 0.00      
15 B1 3109 2953 3.71      
16 B1 985 936 0.01      
17 B1 931 884 26.77      
18 B1 696 661 100.00      
19 B1 349 332 15.39      
20 B2 3281 3115 13.98      
21 B2 3253 3089 2.47      
22 B2 1654 1570 1.97      
23 B2 1347 1279 0.39      
24 B2 1276 1212 9.55      
25 B2 1148 1090 2.18      
26 B2 988 938 15.78      
27 B2 848 805 4.34      

Unscaled Zero Point Vibrational Energy (zpe) 20668.0 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 19626.4 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 mPW1PW91/3-21G*
ABC
0.28094 0.27271 0.14209

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.888 0.000 1.870
H2 -0.888 0.000 1.870
H3 0.000 2.212 0.612
H4 0.000 -2.212 0.612
H5 0.000 1.346 -1.885
H6 0.000 -1.346 -1.885
C7 0.000 1.184 0.280
C8 0.000 -1.184 0.280
C9 0.000 0.000 1.224
C10 0.000 0.738 -0.992
C11 0.000 -0.738 -0.992

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 C9 C10 C11
H11.77602.69532.69534.08714.08712.17222.17221.09863.08643.0864
H21.77602.69532.69534.08714.08712.17222.17221.09863.08643.0864
H32.69532.69534.42342.64304.34621.07983.41182.29482.17793.3575
H42.69532.69534.42344.34622.64303.41181.07982.29483.35752.1779
H54.08714.08712.64304.34622.69102.17173.33003.38761.08042.2671
H64.08714.08714.34622.64302.69103.33002.17173.38762.26711.0804
C72.17222.17221.07983.41182.17173.33002.36791.51381.34812.3050
C82.17222.17223.41181.07983.33002.17172.36791.51382.30501.3481
C91.09861.09862.29482.29483.38763.38761.51381.51382.33522.3352
C103.08643.08642.17793.35751.08042.26711.34812.30502.33521.4762
C113.08643.08643.35752.17792.26711.08042.30501.34812.33521.4762

picture of 1,3-Cyclopentadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C9 H2 107.867 H1 C9 C7 111.521
H1 C9 C8 111.521 H2 C9 C7 111.521
H2 C9 C8 111.521 H3 C7 C9 123.587
H3 C7 C10 127.184 H4 C8 C9 123.587
H4 C8 C11 127.184 H5 C10 C7 126.475
H5 C10 C11 124.211 H6 C11 C8 126.475
H6 C11 C10 124.211 C7 C9 C8 102.912
C7 C10 C11 109.314 C8 C11 C10 109.314
C9 C7 C10 109.230 C9 C8 C11 109.230
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.255      
2 H 0.255      
3 H 0.214      
4 H 0.214      
5 H 0.213      
6 H 0.213      
7 C -0.202      
8 C -0.202      
9 C -0.523      
10 C -0.219      
11 C -0.219      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.520 0.520
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.046 0.000 0.000
y 0.000 7.396 0.000
z 0.000 0.000 8.342


<r2> (average value of r2) Å2
<r2> 93.100
(<r2>)1/2 9.649