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All results from a given calculation for C4H5N (Pyrrole)

using model chemistry: QCISD/6-31G*

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/6-31G*
 hartrees
Energy at 0K-209.510389
Energy at 298.15K 
HF Energy-208.805949
Nuclear repulsion energy160.627800
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/6-31G*
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 3696 3519 64.63      
2 A1 3294 3137 0.18      
3 A1 3272 3116 5.71      
4 A1 1548 1474 10.06      
5 A1 1468 1398 5.50      
6 A1 1195 1138 2.84      
7 A1 1121 1067 11.05      
8 A1 1061 1010 26.99      
9 A1 907 864 0.31      
10 A2 814 775 0.00      
11 A2 678 646 0.00      
12 A2 605 577 0.00      
13 B1 804 766 6.94      
14 B1 732 697 136.90      
15 B1 635 605 0.27      
16 B1 421 401 90.10      
17 B2 3289 3132 7.98      
18 B2 3261 3105 2.86      
19 B2 1627 1550 5.11      
20 B2 1510 1438 13.42      
21 B2 1339 1275 1.36      
22 B2 1193 1136 1.73      
23 B2 1099 1047 19.00      
24 B2 885 843 1.43      

Unscaled Zero Point Vibrational Energy (zpe) 18226.4 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 17357.0 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/6-31G*
ABC
0.30392 0.30041 0.15108

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.123
H2 0.000 0.000 2.132
C3 0.000 1.126 0.331
C4 0.000 -1.126 0.331
C5 0.000 0.715 -0.983
C6 0.000 -0.715 -0.983
H7 0.000 2.117 0.767
H8 0.000 -2.117 0.767
H9 0.000 1.364 -1.850
H10 0.000 -1.364 -1.850

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N11.00951.37681.37682.22332.22332.14702.14703.27113.2711
H21.00952.12462.12463.19583.19582.51952.51954.20974.2097
C31.37682.12462.25201.37612.26091.08293.27242.19383.3099
C41.37682.12462.25202.26091.37613.27241.08293.30992.1938
C52.22333.19581.37612.26091.42912.24203.32841.08382.2523
C62.22333.19582.26091.37611.42913.32842.24202.25231.0838
H72.14702.51951.08293.27242.24203.32844.23442.72324.3550
H82.14702.51953.27241.08293.32842.24204.23444.35502.7232
H93.27114.20972.19383.30991.08382.25232.72324.35502.7277
H103.27114.20973.30992.19382.25231.08384.35502.72322.7277

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 107.735 N1 C3 H7 121.126
N1 C4 C6 107.735 N1 C4 H8 121.126
H2 N1 C3 125.131 H2 N1 C4 125.131
C3 N1 C4 109.737 C3 C5 C6 107.397
C3 C5 H9 125.799 C4 C6 C5 107.397
C4 C6 H10 125.799 C5 C3 H7 131.139
C5 C6 H10 126.805 C6 C4 H8 131.139
C6 C5 H9 126.805
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability