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

using model chemistry: QCISD/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-193.518179
Energy at 298.15K-193.524394
HF Energy-192.806356
Nuclear repulsion energy155.226529
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/cc-pVDZ
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 3260 3127 3.81      
2 A1 3233 3102 8.54      
3 A1 3058 2934 13.97      
4 A1 1599 1534 1.71      
5 A1 1431 1373 2.46      
6 A1 1410 1353 12.83      
7 A1 1127 1081 0.08      
8 A1 1019 977 0.06      
9 A1 936 898 8.65      
10 A1 805 773 0.00      
11 A2 1134 1088 0.00      
12 A2 933 896 0.00      
13 A2 719 690 0.00      
14 A2 507 486 0.00      
15 B1 3100 2974 11.70      
16 B1 946 908 0.78      
17 B1 931 893 22.41      
18 B1 681 653 61.05      
19 B1 341 328 6.02      
20 B2 3251 3119 22.94      
21 B2 3225 3094 1.34      
22 B2 1662 1594 0.09      
23 B2 1333 1279 1.20      
24 B2 1279 1227 0.75      
25 B2 1109 1064 1.23      
26 B2 982 942 8.50      
27 B2 809 776 4.64      

Unscaled Zero Point Vibrational Energy (zpe) 20409.5 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 19580.8 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/cc-pVDZ
ABC
0.27696 0.27017 0.14039

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.889 0.000 1.890
H2 -0.889 0.000 1.890
H3 0.000 2.230 0.614
H4 0.000 -2.230 0.614
H5 0.000 1.366 -1.900
H6 0.000 -1.366 -1.900
C7 0.000 1.186 0.285
C8 0.000 -1.186 0.285
C9 0.000 0.000 1.229
C10 0.000 0.743 -1.000
C11 0.000 -0.743 -1.000

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 C9 C10 C11
H11.77842.71892.71894.12554.12552.18502.18501.10833.11373.1137
H21.77842.71892.71894.12554.12552.18502.18501.10833.11373.1137
H32.71892.71894.45962.65794.38681.09393.43192.31302.19413.3823
H42.71892.71894.45964.38682.65793.43191.09392.31303.38232.1941
H54.12554.12552.65794.38682.73122.19233.35953.41351.09442.2925
H64.12554.12554.38682.65792.73123.35952.19233.41352.29251.0944
C72.18502.18501.09393.43192.19233.35952.37271.51581.35932.3180
C82.18502.18503.43191.09393.35952.19232.37271.51582.31801.3593
C91.10831.10832.31302.31303.41353.41351.51581.51582.34902.3490
C103.11373.11372.19413.38231.09442.29251.35932.31802.34901.4857
C113.11373.11373.38232.19412.29251.09442.31801.35932.34901.4857

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 106.700 H1 C9 C7 111.812
H1 C9 C8 111.812 H2 C9 C7 111.812
H2 C9 C8 111.812 H3 C7 C9 124.028
H3 C7 C10 126.517 H4 C8 C9 124.028
H4 C8 C11 126.517 H5 C10 C7 126.279
H5 C10 C11 124.681 H6 C11 C8 126.279
H6 C11 C10 124.681 C7 C9 C8 103.009
C7 C10 C11 109.040 C8 C11 C10 109.040
C9 C7 C10 109.455 C9 C8 C11 109.455
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability