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 H2NO (nitroxide)

using model chemistry: CCSD/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no C2V 2B1
1 2 yes CS 2A'

Conformer 1 (C2V)

Jump to S1C2
Energy calculated at CCSD/TZVP
 hartrees
Energy at 0K-130.820701
Energy at 298.15K 
HF Energy-130.444808
Nuclear repulsion energy35.079674
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 CCSD/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 3522 3361 4.55      
2 A1 1711 1633 16.44      
3 A1 1388 1325 1.31      
4 B1 328i 313i 222.88      
5 B2 3665 3498 9.00      
6 B2 1297 1238 2.23      

Unscaled Zero Point Vibrational Energy (zpe) 5627.3 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 5370.7 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 CCSD/TZVP
ABC
10.87376 1.13529 1.02797

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 -0.543
O2 0.000 0.000 0.736
H3 0.000 0.877 -1.044
H4 0.000 -0.877 -1.044

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.27841.01051.0105
O21.27841.98461.9846
H31.01051.98461.7540
H41.01051.98461.7540

picture of nitroxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 119.783 O2 N1 H4 119.783
H3 N1 H4 120.434
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at CCSD/TZVP
 hartrees
Energy at 0K-130.820909
Energy at 298.15K-130.823321
HF Energy-130.445304
Nuclear repulsion energy35.030382
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 CCSD/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 A' 3494 3334 2.00      
2 A' 1706 1628 15.96      
3 A' 1371 1308 1.29      
4 A' 444 424 209.54      
5 A" 3632 3466 5.11      
6 A" 1312 1252 1.69      

Unscaled Zero Point Vibrational Energy (zpe) 5979.0 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 5706.4 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 CCSD/TZVP
ABC
10.64353 1.13186 1.03036

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -0.023 0.547 0.000
O2 -0.023 -0.735 0.000
H3 0.171 1.027 0.870
H4 0.171 1.027 -0.870

Atom - Atom Distances (Å)
  N1 O2 H3 H4
N11.28161.01261.0126
O21.28161.97491.9749
H31.01261.97491.7399
H41.01261.97491.7399

picture of nitroxide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 H3 118.347 O2 N1 H4 118.347
H3 N1 H4 118.440
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability