return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B2PLYP=FULL/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at B2PLYP=FULL/6-31+G**
 hartrees
Energy at 0K-209.311767
Energy at 298.15K-209.316323
HF Energy-209.081239
Nuclear repulsion energy150.752942
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 B2PLYP=FULL/6-31+G**
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 3302 3140 1.28      
2 A1 3263 3103 0.85      
3 A1 1574 1497 2.70      
4 A1 1459 1388 25.63      
5 A1 1214 1155 5.26      
6 A1 1105 1051 42.08      
7 A1 1065 1013 0.16      
8 A1 883 840 8.62      
9 A2 882 839 0.00      
10 A2 828 787 0.00      
11 A2 488 464 0.00      
12 B1 833 792 0.03      
13 B1 710 675 80.31      
14 B1 542 516 21.66      
15 B2 3283 3122 5.66      
16 B2 3259 3100 12.81      
17 B2 1385 1317 37.90      
18 B2 1316 1251 0.14      
19 B2 1095 1041 12.92      
20 B2 966 919 0.28      
21 B2 726 690 0.48      

Unscaled Zero Point Vibrational Energy (zpe) 15089.5 cm-1
Scaled (by 0.951) Zero Point Vibrational Energy (zpe) 14350.1 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 B2PLYP=FULL/6-31+G**
ABC
0.33194 0.29371 0.15583

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.249
C2 0.000 1.065 0.423
C3 0.000 -1.065 0.423
C4 0.000 0.683 -0.984
C5 0.000 -0.683 -0.984
H6 0.000 2.072 0.818
H7 0.000 -2.072 0.818
H8 0.000 1.355 -1.828
H9 0.000 -1.355 -1.828

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9
N11.34761.34762.33482.33482.11672.11673.36243.3624
C21.34762.13021.45802.24421.08193.16232.27033.3056
C31.34762.13022.24421.45803.16231.08193.30562.2703
C42.33481.45802.24421.36632.27533.29251.07922.2062
C52.33482.24421.45801.36633.29252.27532.20621.0792
H62.11671.08193.16232.27533.29254.14482.74214.3303
H72.11673.16231.08193.29252.27534.14484.33032.7421
H83.36242.27033.30561.07922.20622.74214.33032.7100
H93.36243.30562.27032.20621.07924.33032.74212.7100

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 112.592 N1 C2 H6 120.816
N1 C3 C5 112.592 N1 C3 H7 120.816
C2 N1 C3 104.442 C2 C4 C5 105.187
C2 C4 H8 126.313 C3 C5 C4 105.187
C3 C5 H9 126.313 C4 C2 H6 126.592
C4 C5 H9 128.501 C5 C3 H7 126.592
C5 C4 H8 128.501
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability