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

using model chemistry: B3LYP/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3LYP/CEP-121G
 hartrees
Energy at 0K-31.774358
Energy at 298.15K-31.780645
Nuclear repulsion energy80.393419
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 B3LYP/CEP-121G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3211 3129 7.92      
2 A1 3178 3097 18.51      
3 A1 2984 2908 17.91      
4 A1 1528 1489 1.02      
5 A1 1448 1411 20.45      
6 A1 1395 1359 8.88      
7 A1 1127 1098 0.33      
8 A1 1008 982 0.20      
9 A1 918 894 12.96      
10 A1 813 792 0.01      
11 A2 1119 1091 0.00      
12 A2 988 963 0.00      
13 A2 736 717 0.00      
14 A2 525 511 0.00      
15 B1 3021 2944 20.45      
16 B1 974 949 0.09      
17 B1 934 910 31.59      
18 B1 699 681 99.02      
19 B1 355 346 10.06      
20 B2 3198 3117 45.80      
21 B2 3168 3087 2.43      
22 B2 1604 1563 0.01      
23 B2 1316 1282 0.91      
24 B2 1267 1235 2.93      
25 B2 1116 1088 2.72      
26 B2 977 952 16.72      
27 B2 817 796 5.03      

Unscaled Zero Point Vibrational Energy (zpe) 20211.3 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 19695.9 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 B3LYP/CEP-121G
ABC
0.27447 0.26795 0.13910

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.883 0.000 1.897
H2 -0.883 0.000 1.897
H3 0.000 2.231 0.615
H4 0.000 -2.231 0.615
H5 0.000 1.357 -1.902
H6 0.000 -1.357 -1.902
C7 0.000 1.196 0.287
C8 0.000 -1.196 0.287
C9 0.000 0.000 1.235
C10 0.000 0.744 -1.006
C11 0.000 -0.744 -1.006

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 C9 C10 C11
H11.76512.71982.71984.12964.12962.19112.19111.10283.12353.1235
H21.76512.71982.71984.12964.12962.19112.19111.10283.12353.1235
H32.71982.71984.46132.66474.38291.08573.44212.31532.19933.3875
H42.71982.71984.46134.38292.66473.44211.08572.31533.38752.1993
H54.12964.12962.66474.38292.71442.19503.36303.41881.08632.2845
H64.12964.12964.38292.66472.71443.36302.19503.41882.28451.0863
C72.19112.19111.08573.44212.19503.36302.39151.52641.36912.3309
C82.19112.19113.44211.08573.36302.19502.39151.52642.33091.3691
C91.10281.10282.31532.31533.41883.41881.52641.52642.36142.3614
C103.12353.12352.19933.38751.08632.28451.36912.33092.36141.4880
C113.12353.12353.38752.19932.28451.08632.33091.36912.36141.4880

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 106.313 H1 C9 C7 111.883
H1 C9 C8 111.883 H2 C9 C7 111.883
H2 C9 C8 111.883 H3 C7 C9 123.963
H3 C7 C10 126.875 H4 C8 C9 123.963
H4 C8 C11 126.875 H5 C10 C7 126.365
H5 C10 C11 124.367 H6 C11 C8 126.365
H6 C11 C10 124.367 C7 C9 C8 103.141
C7 C10 C11 109.268 C8 C11 C10 109.268
C9 C7 C10 109.162 C9 C8 C11 109.162
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.164      
2 H 0.164      
3 H 0.158      
4 H 0.158      
5 H 0.160      
6 H 0.160      
7 C -0.132      
8 C -0.132      
9 C -0.455      
10 C -0.123      
11 C -0.123      


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 0.524 0.524
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.341 0.000 0.000
y 0.000 -28.884 0.000
z 0.000 0.000 -27.155
Traceless
 xyz
x -5.321 0.000 0.000
y 0.000 1.364 0.000
z 0.000 0.000 3.957
Polar
3z2-r27.915
x2-y2-4.457
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.595 0.000 0.000
y 0.000 8.797 0.000
z 0.000 0.000 9.742


<r2> (average value of r2) Å2
<r2> 79.706
(<r2>)1/2 8.928