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

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 2A2
Energy calculated at QCISD/cc-pVDZ
 hartrees
Energy at 0K-194.090427
Energy at 298.15K-194.097557
HF Energy-193.384669
Nuclear repulsion energy162.062776
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
(Å4/u)
Dep P Dep U
1 A1 3254 3122 9.34      
2 A1 3208 3078 9.15      
3 A1 3052 2928 39.82      
4 A1 1503 1442 0.06      
5 A1 1491 1431 3.29      
6 A1 1307 1254 0.08      
7 A1 1101 1056 2.67      
8 A1 1054 1011 0.02      
9 A1 930 893 2.30      
10 A1 811 778 0.16      
11 A2 3068 2943 0.00      
12 A2 1235 1185 0.00      
13 A2 995 954 0.00      
14 A2 596 572 0.00      
15 A2 77 74 0.00      
16 B1 3087 2962 49.52      
17 B1 1144 1098 2.57      
18 B1 938 900 5.80      
19 B1 807 774 1.87      
20 B1 594 570 47.23      
21 B1 400 384 7.73      
22 B2 3242 3111 8.43      
23 B2 3037 2913 35.75      
24 B2 1467 1408 0.33      
25 B2 1426 1368 2.04      
26 B2 1331 1276 4.06      
27 B2 1304 1251 0.89      
28 B2 1072 1029 1.18      
29 B2 925 888 10.99      
30 B2 722 693 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 22589.6 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 21672.5 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
0.25755 0.25096 0.13347

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)
C1 0.000 0.000 1.280
C2 0.000 1.156 0.508
C3 0.000 -1.156 0.508
C4 0.000 0.776 -0.970
C5 0.000 -0.776 -0.970
H6 0.000 0.000 2.377
H7 0.000 2.229 0.719
H8 0.000 -2.229 0.719
H9 0.886 1.192 -1.489
H10 -0.886 1.192 -1.489
H11 0.886 -1.192 -1.489
H12 -0.886 -1.192 -1.489

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12
C11.39051.39052.37942.37941.09692.29872.29873.14183.14183.14183.1418
C21.39052.31291.52562.43232.19781.09353.39232.18462.18463.20743.2074
C31.39052.31292.43231.52562.19783.39231.09353.20743.20742.18462.1846
C42.37941.52562.43231.55163.43512.22823.44711.10811.10812.21982.2198
C52.37942.43231.52561.55163.43513.44712.22822.21982.21981.10811.1081
H61.09692.19782.19783.43513.43512.77792.77794.14104.14104.14104.1410
H72.29871.09353.39232.22823.44712.77794.45862.59532.59534.16744.1674
H82.29873.39231.09353.44712.22822.77794.45864.16744.16742.59532.5953
H93.14182.18463.20741.10812.21984.14102.59534.16741.77202.38452.9708
H103.14182.18463.20741.10812.21984.14102.59534.16741.77202.97082.3845
H113.14183.20742.18462.21981.10814.14104.16742.59532.38452.97081.7720
H123.14183.20742.18462.21981.10814.14104.16742.59532.97082.38451.7720

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 109.278 C1 C2 H7 135.122
C1 C3 C5 109.278 C1 C3 H8 135.122
C2 C1 C3 112.547 C2 C1 H6 123.726
C2 C4 C5 104.449 C2 C4 H9 111.094
C2 C4 H10 111.094 C3 C1 H6 123.726
C3 C5 C4 104.449 C3 C5 H11 111.094
C3 C5 H12 111.094 C4 C2 H7 115.600
C4 C5 H11 112.075 C4 C5 H12 112.075
C5 C3 H8 115.600 C5 C4 H9 112.075
C5 C4 H10 112.075 H9 C4 H10 106.173
H11 C5 H12 106.173
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability