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All results from a given calculation for C5H7 (cyclopentenyl radical)

using model chemistry: QCISD/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at QCISD/cc-pVTZ
 hartrees
Energy at 0K-194.271717
Energy at 298.15K-194.278943
HF Energy-193.435776
Nuclear repulsion energy163.538861
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-pVTZ
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 3256 3111 8.66      
2 A1 3207 3064 8.30      
3 A1 3052 2916 38.47      
4 A1 1515 1447 2.66      
5 A1 1507 1440 1.30      
6 A1 1308 1250 0.29      
7 A1 1114 1064 2.92      
8 A1 1052 1006 0.04      
9 A1 930 888 2.13      
10 A1 819 782 0.16      
11 A2 3060 2924 0.00      
12 A2 1251 1196 0.00      
13 A2 1009 964 0.00      
14 A2 617 589 0.00      
15 A2 91 87 0.00      
16 B1 3082 2944 42.73      
17 B1 1158 1106 3.49      
18 B1 962 920 6.06      
19 B1 818 781 3.47      
20 B1 604 577 56.79      
21 B1 421 402 7.03      
22 B2 3245 3100 7.43      
23 B2 3038 2903 31.45      
24 B2 1490 1424 1.02      
25 B2 1431 1367 2.65      
26 B2 1334 1274 2.20      
27 B2 1322 1264 3.94      
28 B2 1086 1037 1.20      
29 B2 925 884 12.83      
30 B2 727 695 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 22713.7 cm-1
Scaled (by 0.9555) Zero Point Vibrational Energy (zpe) 21702.9 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 QCISD/cc-pVTZ
ABC
0.26225 0.25508 0.13573

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.268
C2 0.000 1.146 0.505
C3 0.000 -1.146 0.505
C4 0.000 0.772 -0.963
C5 0.000 -0.772 -0.963
H6 0.000 0.000 2.350
H7 0.000 2.202 0.723
H8 0.000 -2.202 0.723
H9 0.875 1.182 -1.475
H10 -0.875 1.182 -1.475
H11 0.875 -1.182 -1.475
H12 -0.875 -1.182 -1.475

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.37671.37672.36102.36101.08182.26822.26823.11193.11193.11193.1119
C21.37672.29161.51512.41492.17191.07833.35472.16442.16443.17823.1782
C31.37672.29162.41491.51512.17193.35471.07833.17823.17822.16442.1644
C42.36101.51512.41491.54303.40182.21123.41821.09311.09312.20042.2004
C52.36102.41491.51511.54303.40183.41822.21122.20042.20041.09311.0931
H61.08182.17192.17193.40183.40182.73762.73764.09734.09734.09734.0973
H72.26821.07833.35472.21123.41822.73764.40362.57602.57604.12834.1283
H82.26823.35471.07833.41822.21122.73764.40364.12834.12832.57602.5760
H93.11192.16443.17821.09312.20044.09732.57604.12831.74962.36332.9405
H103.11192.16443.17821.09312.20044.09732.57604.12831.74962.94052.3633
H113.11193.17822.16442.20041.09314.09734.12832.57602.36332.94051.7496
H123.11193.17822.16442.20041.09314.09734.12832.57602.94052.36331.7496

picture of cyclopentenyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 109.364 C1 C2 H7 134.657
C1 C3 C5 109.364 C1 C3 H8 134.657
C2 C1 C3 112.666 C2 C1 H6 123.667
C2 C4 C5 104.303 C2 C4 H9 111.135
C2 C4 H10 111.135 C3 C1 H6 123.667
C3 C5 C4 104.303 C3 C5 H11 111.135
C3 C5 H12 111.135 C4 C2 H7 115.979
C4 C5 H11 112.037 C4 C5 H12 112.037
C5 C3 H8 115.979 C5 C4 H9 112.037
C5 C4 H10 112.037 H9 C4 H10 106.311
H11 C5 H12 106.311
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability