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

using model chemistry: MP2/CEP-31G*

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/CEP-31G*
 hartrees
Energy at 0K-34.494875
Energy at 298.15K-34.499587
HF Energy-33.902534
Nuclear repulsion energy75.796384
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-31G*
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 3289 3122 0.90      
2 A1 3256 3091 0.85      
3 A1 1583 1503 22.72      
4 A1 1471 1397 30.64      
5 A1 1252 1189 14.59      
6 A1 1112 1056 40.84      
7 A1 1072 1018 9.67      
8 A1 875 831 9.65      
9 A2 904 858 0.00      
10 A2 861 817 0.00      
11 A2 511 486 0.00      
12 B1 893 848 0.41      
13 B1 740 702 106.76      
14 B1 569 540 31.07      
15 B2 19535 18546 0.00      
16 B2 3260 3095 104.21      
17 B2 3242 3078 57.14      
18 B2 1315 1249 139.19      
19 B2 1290 1224 15.20      
20 B2 1024 973 0.12      
21 B2 875 830 4.75      

Unscaled Zero Point Vibrational Energy (zpe) 24464.8 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 23226.8 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-31G*
ABC
0.32652 0.28743 0.15287

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.260
C2 0.000 1.066 0.429
C3 0.000 -1.066 0.429
C4 0.000 0.700 -0.996
C5 0.000 -0.700 -0.996
H6 0.000 2.083 0.835
H7 0.000 -2.083 0.835
H8 0.000 1.382 -1.847
H9 0.000 -1.382 -1.847

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9
N11.35101.35102.36132.36132.12552.12553.40023.4002
C21.35102.13181.47112.26921.09493.17472.29823.3430
C31.35102.13182.26921.47113.17471.09493.34302.2982
C42.36131.47112.26921.40032.29443.33121.09102.2499
C52.36132.26921.47111.40033.33122.29442.24991.0910
H62.12551.09493.17472.29443.33124.16552.77234.3821
H72.12553.17471.09493.33122.29444.16554.38212.7723
H83.40022.29823.34301.09102.24992.77234.38212.7649
H93.40023.34302.29822.24991.09104.38212.77232.7649

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 113.518 N1 C2 H6 120.317
N1 C3 C5 113.518 N1 C3 H7 120.317
C2 N1 C3 104.174 C2 C4 C5 104.395
C2 C4 H8 126.895 C3 C5 C4 104.395
C3 C5 H9 126.895 C4 C2 H6 126.165
C4 C5 H9 128.710 C5 C3 H7 126.165
C5 C4 H8 128.710
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability