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

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-192.936180
Energy at 298.15K-192.942461
HF Energy-192.936180
Nuclear repulsion energy156.353595
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 B1B95/3-21G
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 3283 3141 2.58      
2 A1 3253 3112 5.51      
3 A1 3065 2932 2.54      
4 A1 1567 1499 0.67      
5 A1 1456 1393 17.86      
6 A1 1405 1344 11.23      
7 A1 1158 1108 0.38      
8 A1 1008 965 0.06      
9 A1 919 880 11.13      
10 A1 840 804 0.00      
11 A2 1172 1121 0.00      
12 A2 980 937 0.00      
13 A2 739 707 0.00      
14 A2 533 510 0.00      
15 B1 3101 2967 4.04      
16 B1 979 936 0.01      
17 B1 924 884 25.80      
18 B1 691 661 95.02      
19 B1 345 330 15.26      
20 B2 3272 3130 14.34      
21 B2 3243 3102 3.12      
22 B2 1649 1578 1.67      
23 B2 1340 1282 0.41      
24 B2 1267 1212 8.96      
25 B2 1142 1092 1.98      
26 B2 984 941 14.89      
27 B2 839 802 4.45      

Unscaled Zero Point Vibrational Energy (zpe) 20576.1 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 19685.1 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 B1B95/3-21G
ABC
0.28134 0.27321 0.14232

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.887 0.000 1.870
H2 -0.887 0.000 1.870
H3 0.000 2.210 0.612
H4 0.000 -2.210 0.612
H5 0.000 1.344 -1.884
H6 0.000 -1.344 -1.884
C7 0.000 1.183 0.280
C8 0.000 -1.183 0.280
C9 0.000 0.000 1.223
C10 0.000 0.737 -0.991
C11 0.000 -0.737 -0.991

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 C9 C10 C11
H11.77382.69352.69354.08504.08502.17102.17101.09793.08463.0846
H21.77382.69352.69354.08504.08502.17102.17101.09793.08463.0846
H32.69352.69354.42032.64184.34301.07933.40932.29312.17673.3548
H42.69352.69354.42034.34302.64183.40931.07932.29313.35482.1767
H54.08504.08502.64184.34302.68812.17043.32733.38531.07992.2648
H64.08504.08504.34302.64182.68813.32732.17043.38532.26481.0799
C72.17102.17101.07933.40932.17043.32732.36601.51261.34712.3028
C82.17102.17103.40931.07933.32732.17042.36601.51262.30281.3471
C91.09791.09792.29312.29313.38533.38531.51261.51262.33332.3333
C103.08463.08462.17673.35481.07992.26481.34712.30282.33331.4743
C113.08463.08463.35482.17672.26481.07992.30281.34712.33331.4743

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 107.771 H1 C9 C7 111.550
H1 C9 C8 111.550 H2 C9 C7 111.550
H2 C9 C8 111.550 H3 C7 C9 123.568
H3 C7 C10 127.209 H4 C8 C9 123.568
H4 C8 C11 127.209 H5 C10 C7 126.481
H5 C10 C11 124.192 H6 C11 C8 126.481
H6 C11 C10 124.192 C7 C9 C8 102.902
C7 C10 C11 109.327 C8 C11 C10 109.327
C9 C7 C10 109.222 C9 C8 C11 109.222
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.248      
2 H 0.248      
3 H 0.204      
4 H 0.204      
5 H 0.203      
6 H 0.203      
7 C -0.194      
8 C -0.194      
9 C -0.505      
10 C -0.207      
11 C -0.207      


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 0.519 0.519
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 3.050 0.000 0.000
y 0.000 7.428 0.000
z 0.000 0.000 8.353


<r2> (average value of r2) Å2
<r2> 92.982
(<r2>)1/2 9.643