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

using model chemistry: MP2/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-244.758447
Energy at 298.15K 
HF Energy-243.923929
Nuclear repulsion energy123.669246
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/cc-pVTZ
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' 3822 3629 116.21      
2 A' 3821 3628 62.89      
3 A' 3673 3487 71.07      
4 A' 1861 1767 493.87      
5 A' 1622 1540 127.27      
6 A' 1445 1372 135.18      
7 A' 1234 1172 193.02      
8 A' 1081 1027 37.92      
9 A' 964 915 45.88      
10 A' 586 557 33.61      
11 A' 489 464 6.01      
12 A" 789 749 18.76      
13 A" 598 567 56.63      
14 A" 483 458 61.95      
15 A" 246i 234i 216.58      

Unscaled Zero Point Vibrational Energy (zpe) 11110.1 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 10549.1 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/cc-pVTZ
ABC
0.38571 0.36444 0.18738

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.131 0.000
O2 -0.072 1.341 0.000
N3 1.139 -0.600 0.000
O4 -1.085 -0.689 0.000
H5 2.014 -0.114 0.000
H6 1.109 -1.599 0.000
H7 -1.841 -0.089 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21131.35381.36082.02862.05561.8544
O21.21132.28732.26902.54263.16832.2746
N31.35382.28732.22671.00011.00023.0243
O41.36082.26902.22673.15212.37560.9655
H52.02862.54261.00013.15211.73943.8551
H62.05563.16831.00022.37561.73943.3146
H71.85442.27463.02430.96553.85513.3146

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 118.257 C1 N3 H6 120.935
C1 O4 H7 104.427 O2 C1 N3 126.080
O2 C1 O4 123.699 N3 C1 O4 110.220
H5 N3 H6 120.808
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at MP2/cc-pVTZ
 hartrees
Energy at 0K-244.758618
Energy at 298.15K-244.763437
HF Energy-243.923838
Nuclear repulsion energy123.613981
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/cc-pVTZ
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 3821 3628 97.71      
2 A 3790 3599 69.03      
3 A 3651 3466 57.78      
4 A 1861 1767 469.48      
5 A 1628 1546 111.46      
6 A 1444 1371 138.84      
7 A 1238 1176 163.40      
8 A 1094 1039 67.98      
9 A 966 917 43.98      
10 A 788 749 27.41      
11 A 592 562 57.39      
12 A 580 551 53.13      
13 A 500 475 22.80      
14 A 468 445 25.17      
15 A 338 321 249.77      

Unscaled Zero Point Vibrational Energy (zpe) 11379.2 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 10804.6 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/cc-pVTZ
ABC
0.38548 0.36358 0.18745

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.041 0.125 -0.002
O2 -0.479 1.254 0.006
N3 1.273 -0.223 -0.054
O4 -0.821 -0.989 0.002
H5 1.931 0.508 0.142
H6 1.529 -1.166 0.169
H7 -1.726 -0.651 0.008

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21041.36041.36002.01332.03991.8557
O21.21042.29192.26822.52563.14852.2772
N31.36042.29192.23091.00221.00243.0305
O41.36002.26822.23093.13562.36310.9655
H52.01332.52561.00223.13561.72183.8385
H62.03993.14851.00242.36311.72183.2996
H71.85572.27723.03050.96553.83853.2996

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 116.071 C1 N3 H6 118.608
C1 O4 H7 104.596 O2 C1 N3 126.030
O2 C1 O4 123.763 N3 C1 O4 110.182
H5 N3 H6 118.399
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability