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

using model chemistry: MP3/6-31+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 MP3/6-31+G**
 hartrees
Energy at 0K-244.511778
Energy at 298.15K 
HF Energy-243.842475
Nuclear repulsion energy123.533506
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 MP3/6-31+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' 3933 3660 99.77      
2 A' 3891 3620 85.56      
3 A' 3748 3488 77.49      
4 A' 1891 1760 683.18      
5 A' 1678 1562 142.94      
6 A' 1485 1381 176.63      
7 A' 1272 1184 206.78      
8 A' 1118 1040 35.78      
9 A' 996 926 38.79      
10 A' 597 555 38.72      
11 A' 499 464 6.70      
12 A" 782 727 26.04      
13 A" 591 550 66.57      
14 A" 470 437 86.40      
15 A" 320i 298i 269.30      

Unscaled Zero Point Vibrational Energy (zpe) 11314.6 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 10528.2 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 MP3/6-31+G**
ABC
0.38606 0.36244 0.18694

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.128 0.000
O2 -0.069 1.341 0.000
N3 1.142 -0.601 0.000
O4 -1.089 -0.684 0.000
H5 2.017 -0.115 0.000
H6 1.116 -1.602 0.000
H7 -1.857 -0.102 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21461.35491.35892.03142.05871.8717
O21.21462.28872.26742.54383.17242.2979
N31.35492.28872.23271.00091.00123.0405
O41.35892.26742.23273.15782.38830.9637
H52.03142.54381.00093.15781.73883.8743
H62.05873.17241.00122.38831.73883.3299
H71.87172.29793.04050.96373.87433.3299

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 118.368 C1 N3 H6 121.066
C1 O4 H7 106.140 O2 C1 N3 125.837
O2 C1 O4 123.449 N3 C1 O4 110.713
H5 N3 H6 120.565
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at MP3/6-31+G**
 hartrees
Energy at 0K-244.512055
Energy at 298.15K-244.516951
HF Energy-243.842154
Nuclear repulsion energy123.476840
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 MP3/6-31+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 3931 3658 99.64      
2 A 3859 3591 70.30      
3 A 3725 3466 61.30      
4 A 1895 1763 642.16      
5 A 1686 1569 124.31      
6 A 1483 1380 176.47      
7 A 1278 1189 171.30      
8 A 1133 1054 69.69      
9 A 997 927 37.38      
10 A 787 733 43.50      
11 A 601 559 54.50      
12 A 579 539 78.36      
13 A 507 472 29.67      
14 A 468 435 26.77      
15 A 404 376 293.94      

Unscaled Zero Point Vibrational Energy (zpe) 11665.5 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 10854.8 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 MP3/6-31+G**
ABC
0.38611 0.36129 0.18700

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31+G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.038 0.122 -0.001
O2 -0.459 1.261 0.006
N3 1.273 -0.241 -0.055
O4 -0.841 -0.973 0.003
H5 1.940 0.482 0.144
H6 1.520 -1.187 0.169
H7 -1.747 -0.644 0.002

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21341.36211.35792.01582.04271.8725
O21.21342.29312.26602.52583.15182.2992
N31.36212.29312.23831.00301.00333.0476
O41.35792.26602.23833.14162.37670.9638
H52.01582.52581.00303.14161.72103.8575
H62.04273.15181.00332.37671.72103.3162
H71.87252.29923.04760.96383.85753.3162

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 116.109 C1 N3 H6 118.658
C1 O4 H7 106.276 O2 C1 N3 125.733
O2 C1 O4 123.487 N3 C1 O4 110.751
H5 N3 H6 118.141
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability