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 NH2NO2 (nitramide)

using model chemistry: B2PLYP=FULL/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes CS 1A'

Conformer 1 (C2V)

Jump to S1C2
Vibrational Frequencies calculated at B2PLYP=FULL/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at B2PLYP=FULL/aug-cc-pVTZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/aug-cc-pVTZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at B2PLYP=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-261.000527
Energy at 298.15K-261.005535
HF Energy-260.677735
Nuclear repulsion energy127.302165
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/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3543 3399 32.94      
2 A' 1616 1551 54.71      
3 A' 1367 1312 219.71      
4 A' 1008 967 17.24      
5 A' 803 770 86.69      
6 A' 725 696 89.53      
7 A' 625 600 125.95      
8 A" 3673 3524 61.24      
9 A" 1652 1585 310.31      
10 A" 1246 1195 56.46      
11 A" 570 547 0.97      
12 A" 414 397 24.58      

Unscaled Zero Point Vibrational Energy (zpe) 8621.2 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 8271.2 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/aug-cc-pVTZ
ABC
0.42156 0.39894 0.20635

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.074 -1.245 0.000
N2 0.005 0.142 0.000
O3 0.005 0.683 1.093
O4 0.005 0.683 -1.093
H5 -0.318 -1.606 -0.857
H6 -0.318 -1.606 0.857

Atom - Atom Distances (Å)
  N1 N2 O3 O4 H5 H6
N11.38902.21822.21821.00901.0090
N21.38901.22001.22001.97331.9733
O32.21821.22002.18653.02472.3243
O42.21821.22002.18652.32433.0247
H51.00901.97333.02472.32431.7134
H61.00901.97332.32433.02471.7134

picture of nitramide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 N2 O3 116.317 N1 N2 O4 116.317
N2 N1 H5 109.734 N2 N1 H6 109.734
O3 N2 O4 127.296 H5 N1 H6 116.213
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability