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All results from a given calculation for NH2COOH (Carbamic acid)

using model chemistry: CID/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
1 2 no C1 1A

Conformer 1 (CS)

Jump to S1C2
Energy calculated at CID/3-21G*
 hartrees
Energy at 0K-242.848605
Energy at 298.15K-242.853597
HF Energy-242.458273
Nuclear repulsion energy122.351812
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 CID/3-21G*
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' 3807 3542 63.16      
2 A' 3709 3452 36.79      
3 A' 3678 3423 70.69      
4 A' 1875 1745 442.60      
5 A' 1733 1612 97.27      
6 A' 1509 1404 128.44      
7 A' 1262 1175 210.93      
8 A' 1124 1046 80.37      
9 A' 958 892 49.08      
10 A' 598 557 40.02      
11 A' 500 465 8.83      
12 A" 798 743 137.17      
13 A" 600 559 110.75      
14 A" 499 464 208.69      
15 A" 488 454 218.21      

Unscaled Zero Point Vibrational Energy (zpe) 11570.1 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 10766.0 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 CID/3-21G*
ABC
0.37523 0.35879 0.18341

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.141 0.000
O2 -0.199 1.348 0.000
N3 1.196 -0.498 0.000
O4 -1.022 -0.797 0.000
H5 2.042 0.042 0.000
H6 1.234 -1.502 0.000
H7 -1.877 -0.315 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.22351.35631.38722.04472.05441.9315
O21.22352.31462.29742.59453.18992.3623
N31.35632.31462.23841.00381.00403.0786
O41.38722.29742.23843.17722.36350.9811
H52.04472.59451.00383.17721.74253.9355
H62.05443.18991.00402.36351.74253.3293
H71.93152.36233.07860.98113.93553.3293

picture of Carbamic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.321 C1 N3 H6 120.263
C1 O4 H7 108.061 O2 C1 N3 127.499
O2 C1 O4 123.156 N3 C1 O4 109.345
H5 N3 H6 120.416
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at CID/3-21G*
 hartrees
Energy at 0K-242.848605
Energy at 298.15K-242.853596
HF Energy-242.458270
Nuclear repulsion energy122.346234
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 CID/3-21G*
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 3807 3542 63.16      
2 A 3710 3452 36.89      
3 A 3678 3423 70.55      
4 A 1876 1746 442.58      
5 A 1733 1613 97.31      
6 A 1508 1404 128.31      
7 A 1262 1174 210.33      
8 A 1124 1046 80.37      
9 A 957 891 49.77      
10 A 798 743 137.02      
11 A 600 558 110.68      
12 A 598 557 40.21      
13 A 500 465 11.55      
14 A 498 464 223.29      
15 A 489 455 200.89      

Unscaled Zero Point Vibrational Energy (zpe) 11569.3 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 10765.3 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 CID/3-21G*
ABC
0.37516 0.35877 0.18339

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.031 0.138 -0.000
O2 0.493 1.271 0.000
N3 -1.277 -0.220 -0.000
O4 0.820 -1.004 0.000
H5 -1.982 0.494 0.001
H6 -1.536 -1.190 0.001
H7 1.760 -0.724 -0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.22331.35631.38772.04482.05431.9320
O21.22332.31452.29752.59493.18972.3626
N31.35632.31452.23871.00391.00403.0788
O41.38772.29752.23873.17772.36370.9811
H52.04482.59491.00393.17771.74233.9359
H62.05433.18971.00402.36371.74233.3294
H71.93202.36263.07880.98113.93593.3294

picture of Carbamic acid state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N3 H5 119.338 C1 N3 H6 120.270
C1 O4 H7 108.064 O2 C1 N3 127.517
O2 C1 O4 123.144 N3 C1 O4 109.339
H5 N3 H6 120.392
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability