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

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 2A2
Energy calculated at MP2/CEP-121G*
 hartrees
Energy at 0K-34.551377
Energy at 298.15K-34.555956
HF Energy-33.915446
Nuclear repulsion energy76.312820
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 3282 3127 1.54      
2 A1 3252 3099 0.48      
3 A1 1578 1504 23.11      
4 A1 1442 1374 26.93      
5 A1 1252 1193 17.07      
6 A1 1104 1052 47.05      
7 A1 1076 1026 2.62      
8 A1 881 840 10.88      
9 A2 846 806 0.00      
10 A2 726 692 0.00      
11 A2 436 415 0.00      
12 B1 863 822 1.95      
13 B1 701 668 88.32      
14 B1 561 534 27.26      
15 B2 49139 46820 0.00      
16 B2 3260 3106 86.81      
17 B2 3245 3092 73.73      
18 B2 1311 1249 130.19      
19 B2 1298 1237 23.23      
20 B2 1025 977 1.10      
21 B2 881 839 6.85      

Unscaled Zero Point Vibrational Energy (zpe) 39080.2 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 37235.6 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
0.33054 0.29194 0.15502

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 1.252
C2 0.000 1.062 0.424
C3 0.000 -1.062 0.424
C4 0.000 0.693 -0.987
C5 0.000 -0.693 -0.987
H6 0.000 2.072 0.825
H7 0.000 -2.072 0.825
H8 0.000 1.367 -1.835
H9 0.000 -1.367 -1.835

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9
N11.34641.34642.34362.34362.11572.11573.37653.3765
C21.34642.12371.45862.25161.08703.15962.28013.3175
C31.34642.12372.25161.45863.15961.08703.31752.2801
C42.34361.45862.25161.38542.27743.30571.08392.2278
C52.34362.25161.45861.38543.30572.27742.22781.0839
H62.11571.08703.15962.27743.30574.14442.75224.3483
H72.11573.15961.08703.30572.27744.14444.34832.7522
H83.37652.28013.31751.08392.22782.75224.34832.7345
H93.37653.31752.28012.22781.08394.34832.75222.7345

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 113.276 N1 C2 H6 120.418
N1 C3 C5 113.276 N1 C3 H7 120.418
C2 N1 C3 104.125 C2 C4 C5 104.661
C2 C4 H8 126.851 C3 C5 C4 104.661
C3 C5 H9 126.851 C4 C2 H6 126.305
C4 C5 H9 128.488 C5 C3 H7 126.305
C5 C4 H8 128.488
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability