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: BLYP/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A2
Energy calculated at BLYP/TZVP
 hartrees
Energy at 0K-209.499982
Energy at 298.15K-209.504330
HF Energy-209.499982
Nuclear repulsion energy149.895316
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 BLYP/TZVP
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 3174 3166 2.76      
2 A1 3128 3120 1.85      
3 A1 1502 1499 1.55      
4 A1 1373 1369 18.55      
5 A1 1163 1160 3.44      
6 A1 1057 1054 42.72      
7 A1 1012 1010 3.32      
8 A1 859 857 9.25      
9 A2 843 841 0.00      
10 A2 764 762 0.00      
11 A2 446 445 0.00      
12 B1 795 793 0.15      
13 B1 684 682 66.15      
14 B1 522 521 20.57      
15 B2 3156 3148 6.66      
16 B2 3124 3116 18.71      
17 B2 1314 1311 41.79      
18 B2 1263 1260 0.02      
19 B2 1038 1035 9.23      
20 B2 901 899 0.10      
21 B2 612 610 1.15      

Unscaled Zero Point Vibrational Energy (zpe) 14364.7 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 14328.8 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 BLYP/TZVP
ABC
0.32860 0.29000 0.15405

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.257
C2 0.000 1.072 0.426
C3 0.000 -1.072 0.426
C4 0.000 0.685 -0.990
C5 0.000 -0.685 -0.990
H6 0.000 2.085 0.823
H7 0.000 -2.085 0.823
H8 0.000 1.359 -1.840
H9 0.000 -1.359 -1.840

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 H6 H7 H8 H9
N11.35581.35582.34892.34892.12982.12983.38203.3820
C21.35582.14311.46802.25621.08873.18172.28443.3234
C31.35582.14312.25621.46803.18171.08873.32342.2844
C42.34891.46802.25621.36962.29123.31081.08512.2139
C52.34892.25621.46801.36963.31082.29122.21391.0851
H62.12981.08873.18172.29123.31084.17052.76054.3542
H72.12983.18171.08873.31082.29124.17054.35422.7605
H83.38202.28443.32341.08512.21392.76054.35422.7188
H93.38203.32342.28442.21391.08514.35422.76052.7188

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 112.510 N1 C2 H6 120.821
N1 C3 C5 112.510 N1 C3 H7 120.821
C2 N1 C3 104.433 C2 C4 C5 105.274
C2 C4 H8 126.288 C3 C5 C4 105.274
C3 C5 H9 126.288 C4 C2 H6 126.670
C4 C5 H9 128.438 C5 C3 H7 126.670
C5 C4 H8 128.438
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.115      
2 C -0.083      
3 C -0.083      
4 C -0.105      
5 C -0.105      
6 H 0.120      
7 H 0.120      
8 H 0.126      
9 H 0.126      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -2.070 2.070
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.640 0.000 0.000
y 0.000 -23.853 0.000
z 0.000 0.000 -32.541
Traceless
 xyz
x -3.443 0.000 0.000
y 0.000 8.237 0.000
z 0.000 0.000 -4.794
Polar
3z2-r2-9.589
x2-y2-7.786
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.356 0.000 0.000
y 0.000 9.054 0.000
z 0.000 0.000 7.972


<r2> (average value of r2) Å2
<r2> 83.251
(<r2>)1/2 9.124