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/6-31+G**

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/6-31+G**
Rotational Constants (cm-1) from geometry optimized at B2PLYP=FULL/6-31+G**
See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31+G**
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at B2PLYP=FULL/6-31+G**
 hartrees
Energy at 0K-260.832526
Energy at 298.15K-260.837518
HF Energy-260.581878
Nuclear repulsion energy126.430916
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 A' 3563 3388 38.61      
2 A' 1632 1552 63.48      
3 A' 1381 1313 231.35      
4 A' 1009 960 16.77      
5 A' 791 752 137.23      
6 A' 715 680 96.82      
7 A' 633 602 112.27      
8 A" 3710 3528 67.10      
9 A" 1672 1590 312.23      
10 A" 1248 1187 47.87      
11 A" 565 537 1.37      
12 A" 418 398 28.01      

Unscaled Zero Point Vibrational Energy (zpe) 8667.5 cm-1
Scaled (by 0.951) Zero Point Vibrational Energy (zpe) 8242.8 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 B2PLYP=FULL/6-31+G**
ABC
0.41406 0.39534 0.20357

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.081 -1.250 0.000
N2 0.002 0.140 0.000
O3 0.002 0.688 1.103
O4 0.002 0.688 -1.103
H5 -0.307 -1.617 -0.860
H6 -0.307 -1.617 0.860

Atom - Atom Distances (Å)
  N1 N2 O3 O4 H5 H6
N11.39182.23072.23071.01231.0123
N21.39181.23181.23181.98051.9805
O32.23071.23182.20693.04332.3380
O42.23071.23182.20692.33803.0433
H51.01231.98053.04332.33801.7198
H61.01231.98052.33803.04331.7198

picture of nitramide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 N2 O3 116.345 N1 N2 O4 116.345
N2 N1 H5 109.934 N2 N1 H6 109.934
O3 N2 O4 127.219 H5 N1 H6 116.314
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability