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

using model chemistry: MP2/6-31+G**

19 10 17 12 22

States and conformations

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

Conformer 1 (CS)

Jump to S1C2
Energy calculated at MP2/6-31+G**
 hartrees
Energy at 0K-244.507946
Energy at 298.15K 
HF Energy-243.840486
Nuclear repulsion energy122.884771
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 MP2/6-31+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' 3859 3630 95.01      
2 A' 3841 3613 100.27      
3 A' 3706 3486 78.45      
4 A' 1845 1735 601.44      
5 A' 1654 1556 122.85      
6 A' 1445 1360 185.81      
7 A' 1236 1163 188.70      
8 A' 1094 1029 40.11      
9 A' 965 907 54.12      
10 A' 579 545 33.12      
11 A' 490 461 6.49      
12 A" 757 712 16.38      
13 A" 591 556 69.10      
14 A" 460 433 83.86      
15 A" 325i 306i 263.55      

Unscaled Zero Point Vibrational Energy (zpe) 11098.3 cm-1
Scaled (by 0.9406) Zero Point Vibrational Energy (zpe) 10439.1 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 MP2/6-31+G**
ABC
0.37940 0.36110 0.18501

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.130 0.000
O2 -0.082 1.352 0.000
N3 1.149 -0.593 0.000
O4 -1.085 -0.704 0.000
H5 2.023 -0.099 0.000
H6 1.131 -1.597 0.000
H7 -1.860 -0.121 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.22441.35761.36852.03552.06411.8773
O21.22442.30152.28742.55603.18812.3094
N31.35762.30152.23671.00371.00393.0461
O41.36852.28742.23673.16602.38890.9698
H52.03552.55601.00373.16601.74333.8830
H62.06413.18811.00392.38891.74333.3352
H71.87732.30943.04610.96983.88303.3352

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 118.325 C1 N3 H6 121.145
C1 O4 H7 105.538 O2 C1 N3 126.018
O2 C1 O4 123.715 N3 C1 O4 110.267
H5 N3 H6 120.530
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at MP2/6-31+G**
 hartrees
Energy at 0K-244.508231
Energy at 298.15K-244.513087
HF Energy-243.840120
Nuclear repulsion energy122.825591
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 MP2/6-31+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 3840 3612 103.97      
2 A 3827 3600 75.30      
3 A 3683 3464 62.23      
4 A 1845 1736 563.45      
5 A 1662 1563 108.42      
6 A 1443 1357 182.15      
7 A 1242 1168 150.06      
8 A 1109 1043 78.64      
9 A 965 908 53.41      
10 A 762 717 31.44      
11 A 587 552 76.80      
12 A 575 541 52.72      
13 A 499 469 27.51      
14 A 460 432 23.59      
15 A 412 387 291.71      

Unscaled Zero Point Vibrational Energy (zpe) 11454.4 cm-1
Scaled (by 0.9406) Zero Point Vibrational Energy (zpe) 10774.0 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 MP2/6-31+G**
ABC
0.37929 0.36007 0.18507

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.038 0.124 0.000
O2 -0.474 1.268 0.006
N3 1.277 -0.231 -0.056
O4 -0.831 -0.991 0.003
H5 1.941 0.497 0.146
H6 1.531 -1.178 0.170
H7 -1.744 -0.663 0.002

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.22331.36431.36812.01962.04691.8784
O21.22332.30602.28622.53893.16702.3107
N31.36432.30602.24201.00581.00603.0526
O41.36812.28622.24203.14942.37590.9698
H52.01962.53891.00583.14941.72473.8659
H62.04693.16701.00602.37591.72473.3199
H71.87842.31073.05260.96983.86593.3199

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 116.062 C1 N3 H6 118.656
C1 O4 H7 105.658 O2 C1 N3 125.956
O2 C1 O4 123.733 N3 C1 O4 110.274
H5 N3 H6 118.024
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability