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

using model chemistry: CISD/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 CISD/3-21G*
 hartrees
Energy at 0K-207.414220
Energy at 298.15K 
HF Energy-207.015446
Nuclear repulsion energy149.559009
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 CISD/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 4549 4250 525.78      
2 A1 3320 3102 5.36      
3 A1 3125 2920 10.09      
4 A1 1450 1355 3.96      
5 A1 1214 1134 4.22      
6 A1 1049 981 30.70      
7 A1 948 886 13.73      
8 A1 2110i 1972i 74.54      
9 A2 1378 1287 0.00      
10 A2 1023 956 0.00      
11 A2 621 580 0.00      
12 B1 1211 1132 179.75      
13 B1 917 857 4.22      
14 B1 582 544 0.00      
15 B2 24365 22767 0.00      
16 B2 3299 3083 733.89      
17 B2 2136 1996 8262.18      
18 B2 1489 1391 4164.28      
19 B2 1174 1097 2256.03      
20 B2 765 714 548.00      
21 B2 6865i 6415i 125.87      

Unscaled Zero Point Vibrational Energy (zpe) 22818.6 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 21321.7 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 CISD/3-21G*
ABC
0.32573 0.28895 0.15312

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.253
C2 0.000 1.084 0.433
C3 0.000 -1.084 0.433
C4 0.000 0.679 -0.995
C5 0.000 -0.679 -0.995
H6 0.000 2.089 0.820
H7 0.000 -2.089 0.820
H8 0.000 1.347 -1.838
H9 0.000 -1.347 -1.838

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9
N11.35951.35952.34812.34812.13382.13383.37213.3721
C21.35952.16901.48432.26921.07673.19732.28673.3275
C31.35952.16902.26921.48433.19731.07673.32752.2867
C42.34811.48432.26921.35832.29813.31021.07602.1948
C52.34812.26921.48431.35833.31022.29812.19481.0760
H62.13381.07673.19732.29813.31024.17872.76004.3446
H72.13383.19731.07673.31022.29814.17874.34462.7600
H83.37212.28673.32751.07602.19482.76004.34462.6941
H93.37213.32752.28672.19481.07604.34462.76002.6941

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 111.240 N1 C2 H6 121.864
N1 C3 C5 111.240 N1 C3 H7 121.864
C2 N1 C3 105.825 C2 C4 C5 105.847
C2 C4 H8 125.785 C3 C5 C4 105.847
C3 C5 H9 125.785 C4 C2 H6 126.896
C4 C5 H9 128.368 C5 C3 H7 126.896
C5 C4 H8 128.368
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability