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

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/6-31+G**
 hartrees
Energy at 0K-193.526280
Energy at 298.15K-193.532491
HF Energy-192.807654
Nuclear repulsion energy156.194227
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 QCISD/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 A1 3300 3119 3.96      
2 A1 3275 3096 11.24      
3 A1 3091 2922 14.02      
4 A1 1605 1517 1.75      
5 A1 1481 1400 7.19      
6 A1 1441 1363 8.47      
7 A1 1156 1093 0.12      
8 A1 1030 974 0.19      
9 A1 947 896 8.03      
10 A1 816 772 0.00      
11 A2 1142 1080 0.00      
12 A2 905 856 0.00      
13 A2 711 672 0.00      
14 A2 499 472 0.00      
15 B1 3129 2958 10.53      
16 B1 955 903 28.22      
17 B1 934 883 3.63      
18 B1 678 641 94.38      
19 B1 338 320 4.95      
20 B2 3292 3112 25.86      
21 B2 3266 3088 1.36      
22 B2 1672 1581 0.18      
23 B2 1358 1284 1.30      
24 B2 1317 1245 1.09      
25 B2 1141 1078 1.12      
26 B2 996 941 10.33      
27 B2 820 776 4.74      

Unscaled Zero Point Vibrational Energy (zpe) 20647.1 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 19519.8 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 QCISD/6-31+G**
ABC
0.28010 0.27341 0.14199

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.880 0.000 1.877
H2 -0.880 0.000 1.877
H3 0.000 2.212 0.608
H4 0.000 -2.212 0.608
H5 0.000 1.353 -1.885
H6 0.000 -1.353 -1.885
C7 0.000 1.181 0.283
C8 0.000 -1.181 0.283
C9 0.000 0.000 1.223
C10 0.000 0.738 -0.995
C11 0.000 -0.738 -0.995

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 C9 C10 C11
H11.75922.69692.69694.09274.09272.16952.16951.09563.09273.0927
H21.75922.69692.69694.09274.09272.16952.16951.09563.09273.0927
H32.69692.69694.42312.63684.34961.08073.40802.29552.17743.3574
H42.69692.69694.42314.34962.63683.40801.08072.29553.35742.1774
H54.09274.09272.63684.34962.70542.17473.33453.38961.08122.2724
H64.09274.09274.34962.63682.70543.33452.17473.38962.27241.0812
C72.16952.16951.08073.40802.17473.33452.36181.50941.35272.3059
C82.16952.16953.40801.08073.33452.17472.36181.50942.30591.3527
C91.09561.09562.29552.29553.38963.38961.50941.50942.33792.3379
C103.09273.09272.17743.35741.08122.27241.35272.30592.33791.4767
C113.09273.09273.35742.17742.27241.08122.30591.35272.33791.4767

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 106.801 H1 C9 C7 111.798
H1 C9 C8 111.798 H2 C9 C7 111.798
H2 C9 C8 111.798 H3 C7 C9 123.971
H3 C7 C10 126.605 H4 C8 C9 123.971
H4 C8 C11 126.605 H5 C10 C7 126.274
H5 C10 C11 124.628 H6 C11 C8 126.274
H6 C11 C10 124.628 C7 C9 C8 102.955
C7 C10 C11 109.098 C8 C11 C10 109.098
C9 C7 C10 109.424 C9 C8 C11 109.424
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability