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

using model chemistry: G3

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 G3
 hartrees
Energy at 0K-245.002539
Energy at 298.15K-244.997747
HF Energy-243.820318
Nuclear repulsion energy125.251734
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 HF/6-31G*
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' 4088 3852 136.42      
2 A' 3998 3767 89.58      
3 A' 3864 3641 74.00      
4 A' 2017 1901 689.22      
5 A' 1788 1685 165.83      
6 A' 1588 1496 189.15      
7 A' 1367 1288 228.06      
8 A' 1193 1124 46.16      
9 A' 1067 1005 20.08      
10 A' 645 608 49.97      
11 A' 533 502 6.49      
12 A" 878 827 86.34      
13 A" 632 595 74.48      
14 A" 543 512 79.90      
15 A" 160i 151i 330.93      

Unscaled Zero Point Vibrational Energy (zpe) 12019.6 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 11324.9 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=FULL/6-31G*
ABC
0.38098 0.36230 0.18570

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.132 0.000
O2 -0.083 1.349 0.000
N3 1.146 -0.593 0.000
O4 -1.082 -0.704 0.000
H5 2.025 -0.101 0.000
H6 1.127 -1.600 0.000
H7 -1.854 -0.107 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.22021.35581.36682.03792.06591.8697
O21.22022.29822.28282.55833.18742.2931
N31.35582.29822.23061.00681.00713.0394
O41.36682.28282.23063.16422.38360.9759
H52.03792.55831.00683.16421.74693.8789
H62.06593.18741.00712.38361.74693.3339
H71.86972.29313.03940.97593.87893.3339

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 118.365 C1 N3 H6 121.105
C1 O4 H7 107.364 O2 C1 N3 125.609
O2 C1 O4 123.194 N3 C1 O4 111.197
H5 N3 H6 120.530
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at G3
 hartrees
Energy at 0K-245.002109
Energy at 298.15K-245.007206
HF Energy-243.820345
Nuclear repulsion energy125.231986
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 HF/6-31G*
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 4088 3851 136.40      
2 A 3988 3757 83.47      
3 A 3857 3634 68.85      
4 A 2020 1903 677.81      
5 A 1791 1688 157.47      
6 A 1587 1495 190.10      
7 A 1369 1290 216.39      
8 A 1199 1130 56.85      
9 A 1066 1005 19.81      
10 A 878 827 93.91      
11 A 647 609 55.16      
12 A 625 589 83.88      
13 A 547 516 50.79      
14 A 525 495 21.64      
15 A 225 212 334.77      

Unscaled Zero Point Vibrational Energy (zpe) 12205.8 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 11500.3 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 MP2=FULL/6-31G*
ABC
0.38083 0.36131 0.18577

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.041 0.125 -0.001
O2 -0.490 1.259 0.007
N3 1.278 -0.216 -0.056
O4 -0.815 -1.000 0.002
H5 1.936 0.521 0.145
H6 1.544 -1.162 0.176
H7 -1.734 -0.670 0.005

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21931.36291.36582.02122.04871.8706
O21.21932.30302.28172.53923.16582.2949
N31.36292.30302.23561.00881.00923.0461
O41.36582.28172.23563.14692.37090.9760
H52.02122.53921.00883.14691.72823.8607
H62.04873.16581.00922.37091.72823.3186
H71.87062.29493.04610.97603.86073.3186

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 117.747 C1 N3 H6 120.420
C1 O4 H7 107.359 O2 C1 N3 125.585
O2 C1 O4 123.189 N3 C1 O4 111.221
H5 N3 H6 119.276
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability