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

using model chemistry: QCISD/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 QCISD/3-21G
 hartrees
Energy at 0K-207.484191
Energy at 298.15K-207.488757
HF Energy-207.012902
Nuclear repulsion energy148.084658
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/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 3253 3153 0.35      
2 A1 3224 3125 6.19      
3 A1 1539 1492 0.82      
4 A1 1369 1327 2.88      
5 A1 1182 1145 0.49      
6 A1 1066 1033 12.37      
7 A1 984 954 18.56      
8 A1 884 856 8.41      
9 A2 878 851 0.00      
10 A2 763 739 0.00      
11 A2 492 477 0.00      
12 B1 784 760 2.71      
13 B1 702 681 86.51      
14 B1 547 530 18.43      
15 B2 3230 3131 0.01      
16 B2 3216 3117 1.00      
17 B2 2181 2114 1329.38      
18 B2 1321 1280 37.87      
19 B2 1268 1229 73.22      
20 B2 959 929 6.50      
21 B2 834 809 10.54      

Unscaled Zero Point Vibrational Energy (zpe) 15337.8 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 14865.4 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/3-21G
ABC
0.31979 0.28286 0.15010

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.270
C2 0.000 1.096 0.435
C3 0.000 -1.096 0.435
C4 0.000 0.684 -1.005
C5 0.000 -0.684 -1.005
H6 0.000 2.107 0.825
H7 0.000 -2.107 0.825
H8 0.000 1.356 -1.854
H9 0.000 -1.356 -1.854

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9
N11.37781.37782.37552.37552.15402.15403.40623.4062
C21.37782.19171.49742.28941.08393.22682.30423.3546
C31.37782.19172.28941.49743.22681.08393.35462.3042
C42.37551.49742.28941.36852.31753.33751.08332.2101
C52.37552.28941.49741.36853.33752.31752.21011.0833
H62.15401.08393.22682.31753.33754.21482.78234.3786
H72.15403.22681.08393.33752.31754.21484.37862.7823
H83.40622.30423.35461.08332.21012.78234.37862.7120
H93.40623.35462.30422.21011.08334.37862.78232.7120

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 111.356 N1 C2 H6 121.633
N1 C3 C5 111.356 N1 C3 H7 121.633
C2 N1 C3 105.376 C2 C4 C5 105.956
C2 C4 H8 125.717 C3 C5 C4 105.956
C3 C5 H9 125.717 C4 C2 H6 127.011
C4 C5 H9 128.327 C5 C3 H7 127.011
C5 C4 H8 128.327
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability