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

using model chemistry: MP2/CEP-121G

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 MP2/CEP-121G
 hartrees
Energy at 0K-48.667668
Energy at 298.15K-48.672362
HF Energy-48.225819
Nuclear repulsion energy66.976103
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 MP2/CEP-121G
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' 3755 3665 56.44      
2 A' 3629 3542 53.13      
3 A' 3591 3505 67.86      
4 A' 1725 1683 475.73      
5 A' 1667 1627 109.76      
6 A' 1388 1355 169.62      
7 A' 1201 1172 140.70      
8 A' 1079 1053 109.72      
9 A' 865 845 89.01      
10 A' 531 518 27.22      
11 A' 462 451 8.55      
12 A" 686 669 30.47      
13 A" 568 554 93.99      
14 A" 446 435 238.79      
15 A" 373 364 241.24      

Unscaled Zero Point Vibrational Energy (zpe) 10981.5 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 10717.9 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 MP2/CEP-121G
ABC
0.35181 0.34419 0.17398

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.142 0.000
O2 -0.215 1.389 0.000
N3 1.229 -0.494 0.000
O4 -1.040 -0.836 0.000
H5 2.069 0.068 0.000
H6 1.279 -1.504 0.000
H7 -1.912 -0.377 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.26491.38411.42832.07072.08501.9815
O21.26492.37292.37352.63843.25602.4496
N31.38412.37292.29481.01121.01123.1433
O41.42832.37352.29483.23842.41330.9855
H52.07072.63841.01123.23841.75994.0063
H62.08503.25601.01122.41331.75993.3842
H71.98152.44963.14330.98554.00633.3842

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 118.820 C1 N3 H6 120.217
C1 O4 H7 108.969 O2 C1 N3 127.160
O2 C1 O4 123.489 N3 C1 O4 109.352
H5 N3 H6 120.962
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at MP2/CEP-121G
 hartrees
Energy at 0K-48.667668
Energy at 298.15K-48.672360
HF Energy-48.225805
Nuclear repulsion energy66.973707
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 MP2/CEP-121G
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 3755 3665 56.36      
2 A 3630 3543 53.05      
3 A 3591 3505 67.74      
4 A 1726 1684 480.37      
5 A 1668 1628 105.70      
6 A 1387 1354 169.27      
7 A 1200 1172 139.38      
8 A 1078 1052 110.06      
9 A 864 843 90.45      
10 A 685 669 30.15      
11 A 567 553 92.63      
12 A 530 518 27.07      
13 A 462 451 8.52      
14 A 444 434 246.95      
15 A 374 365 234.81      

Unscaled Zero Point Vibrational Energy (zpe) 10980.3 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 10716.8 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 MP2/CEP-121G
ABC
0.35163 0.34429 0.17396

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.026 0.141 0.000
O2 0.461 1.328 -0.000
N3 -1.298 -0.266 -0.000
O4 0.873 -1.010 0.000
H5 -2.024 0.438 0.001
H6 -1.528 -1.250 -0.001
H7 1.813 -0.716 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.26431.38411.42912.07082.08521.9825
O21.26432.37282.37402.63903.25592.4510
N31.38412.37282.29451.01121.01133.1433
O41.42912.37402.29453.23842.41250.9854
H52.07082.63901.01123.23841.75974.0069
H62.08523.25591.01132.41251.75973.3835
H71.98252.45103.14330.98544.00693.3835

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 118.834 C1 N3 H6 120.233
C1 O4 H7 108.998 O2 C1 N3 127.204
O2 C1 O4 123.514 N3 C1 O4 109.282
H5 N3 H6 120.933
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability