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All results from a given calculation for C4H4N (pyrrolide radical)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-207.437477
Energy at 298.15K-207.442195
HF Energy-207.013585
Nuclear repulsion energy149.228667
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 MP2/3-21G
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 3306 3156 0.01      
2 A1 3279 3130 3.58      
3 A1 1527 1458 0.22      
4 A1 1371 1308 9.34      
5 A1 1234 1178 4.69      
6 A1 1110 1060 26.78      
7 A1 1024 977 22.38      
8 A1 919 877 12.12      
9 A2 866 826 0.00      
10 A2 851 812 0.00      
11 A2 528 504 0.00      
12 B1 873 833 0.69      
13 B1 713 681 90.04      
14 B1 587 560 24.82      
15 B2 7954 7593 457564.90      
16 B2 3278 3129 78.31      
17 B2 3269 3120 38.90      
18 B2 1338 1277 20.38      
19 B2 1299 1240 93.68      
20 B2 976 931 10.70      
21 B2 864 825 16.81      

Unscaled Zero Point Vibrational Energy (zpe) 18581.2 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 17735.7 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 MP2/3-21G
ABC
0.32376 0.28838 0.15252

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.257
C2 0.000 1.082 0.432
C3 0.000 -1.082 0.432
C4 0.000 0.691 -0.994
C5 0.000 -0.691 -0.994
H6 0.000 2.090 0.821
H7 0.000 -2.090 0.821
H8 0.000 1.359 -1.842
H9 0.000 -1.359 -1.842

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9
N11.36071.36072.35472.35472.13452.13453.38403.3840
C21.36072.16381.47862.27501.08053.19542.29073.3360
C31.36072.16382.27501.47863.19541.08053.33602.2907
C42.35471.47862.27501.38152.29223.32081.07972.2184
C52.35472.27501.47861.38153.32082.29222.21841.0797
H62.13451.08053.19542.29223.32084.17932.76204.3577
H72.13453.19541.08053.32082.29224.17934.35772.7620
H83.38402.29073.33601.07972.21842.76204.35772.7184
H93.38403.33602.29072.21841.07974.35772.76202.7184

picture of pyrrolide radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C4 111.995 N1 C2 H6 121.517
N1 C3 C5 111.995 N1 C3 H7 121.517
C2 N1 C3 105.330 C2 C4 C5 105.340
C2 C4 H8 126.408 C3 C5 C4 105.340
C3 C5 H9 126.408 C4 C2 H6 126.489
C4 C5 H9 128.252 C5 C3 H7 126.489
C5 C4 H8 128.252
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability