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All results from a given calculation for C4H5N (Pyrrole)

using model chemistry: MP2/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/CEP-121G
 hartrees
Energy at 0K-34.890850
Energy at 298.15K 
HF Energy-34.433910
Nuclear repulsion energy81.702832
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 MP2/CEP-121G
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 3637 3550 48.75      
2 A1 3227 3150 0.69      
3 A1 3200 3123 11.22      
4 A1 1462 1427 9.68      
5 A1 1389 1356 6.01      
6 A1 1126 1099 0.00      
7 A1 1090 1064 5.36      
8 A1 1022 997 40.67      
9 A1 892 870 0.57      
10 A2 648 632 0.00      
11 A2 532 519 0.00      
12 A2 221i 216i 0.00      
13 B1 684 668 116.72      
14 B1 627 612 141.96      
15 B1 579 565 14.26      
16 B1 462 451 42.64      
17 B2 3217 3140 14.51      
18 B2 3188 3111 3.07      
19 B2 1534 1497 7.36      
20 B2 1437 1403 15.78      
21 B2 1306 1274 0.01      
22 B2 1181 1153 0.63      
23 B2 1058 1032 25.82      
24 B2 876 855 1.20      

Unscaled Zero Point Vibrational Energy (zpe) 17075.0 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 16665.2 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 MP2/CEP-121G
ABC
0.29074 0.28717 0.14447

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.148
H2 0.000 0.000 2.163
C3 0.000 1.157 0.341
C4 0.000 -1.157 0.341
C5 0.000 0.728 -1.008
C6 0.000 -0.728 -1.008
H7 0.000 2.152 0.778
H8 0.000 -2.152 0.778
H9 0.000 1.379 -1.880
H10 0.000 -1.379 -1.880

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N11.01421.41031.41032.27582.27582.18372.18373.32753.3275
H21.01422.15752.15753.25303.25302.55892.55894.27124.2712
C31.41032.15752.31311.41572.31761.08723.33732.23243.3708
C41.41032.15752.31312.31761.41573.33731.08723.37082.2324
C52.27583.25301.41572.31761.45562.28453.38881.08822.2800
C62.27583.25302.31761.41571.45563.38882.28452.28001.0882
H72.18372.55891.08723.33732.28453.38884.30412.76844.4196
H82.18372.55893.33731.08723.38882.28454.30414.41962.7684
H93.32754.27122.23243.37081.08822.28002.76844.41962.7576
H103.32754.27123.37082.23242.28001.08824.41962.76842.7576

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 107.281 N1 C3 H7 121.394
N1 C4 C6 107.281 N1 C4 H8 121.394
H2 N1 C3 124.910 H2 N1 C4 124.910
C3 N1 C4 110.180 C3 C5 C6 107.629
C3 C5 H9 125.629 C4 C6 C5 107.629
C4 C6 H10 125.629 C5 C3 H7 131.325
C5 C6 H10 126.742 C6 C4 H8 131.325
C6 C5 H9 126.742
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability