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

using model chemistry: CCD/6-31G**

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 CCD/6-31G**
 hartrees
Energy at 0K-244.497127
Energy at 298.15K 
HF Energy-243.832848
Nuclear repulsion energy123.562201
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 CCD/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' 3920 3676 80.71      
2 A' 3890 3647 72.47      
3 A' 3746 3512 69.19      
4 A' 1926 1806 536.50      
5 A' 1679 1574 153.75      
6 A' 1499 1405 141.18      
7 A' 1278 1198 210.52      
8 A' 1118 1048 33.19      
9 A' 996 934 33.18      
10 A' 597 560 40.34      
11 A' 498 466 6.04      
12 A" 789 740 43.35      
13 A" 605 567 72.17      
14 A" 497 466 67.07      
15 A" 260i 244i 289.40      

Unscaled Zero Point Vibrational Energy (zpe) 11388.6 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 10677.9 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 CCD/6-31G**
ABC
0.38545 0.36333 0.18703

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.131 0.000
O2 -0.067 1.342 0.000
N3 1.139 -0.604 0.000
O4 -1.088 -0.684 0.000
H5 2.016 -0.122 0.000
H6 1.108 -1.604 0.000
H7 -1.850 -0.093 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21321.35551.35992.03162.05871.8639
O21.21322.28982.26922.54613.17232.2890
N31.35552.28982.22911.00061.00083.0328
O41.35992.26922.22913.15492.38140.9643
H52.03162.54611.00063.15491.73853.8663
H62.05873.17231.00082.38141.73853.3219
H71.86392.28903.03280.96433.86633.3219

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 118.361 C1 N3 H6 121.043
C1 O4 H7 105.369 O2 C1 N3 126.009
O2 C1 O4 123.641 N3 C1 O4 110.350
H5 N3 H6 120.597
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at CCD/6-31G**
 hartrees
Energy at 0K-244.497328
Energy at 298.15K-244.502194
HF Energy-243.832602
Nuclear repulsion energy123.499594
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 CCD/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 3919 3674 80.74      
2 A 3856 3615 57.61      
3 A 3721 3488 53.36      
4 A 1928 1808 505.73      
5 A 1685 1580 132.29      
6 A 1497 1403 145.35      
7 A 1283 1203 179.99      
8 A 1132 1061 62.95      
9 A 997 935 31.72      
10 A 790 741 60.16      
11 A 602 564 66.53      
12 A 589 553 73.75      
13 A 511 479 26.83      
14 A 477 447 20.10      
15 A 359 337 307.58      

Unscaled Zero Point Vibrational Energy (zpe) 11672.9 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 10944.6 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 CCD/6-31G**
ABC
0.38538 0.36221 0.18708

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.041 0.124 -0.002
O2 -0.474 1.256 0.007
N3 1.275 -0.228 -0.055
O4 -0.827 -0.984 0.002
H5 1.934 0.501 0.143
H6 1.529 -1.170 0.176
H7 -1.734 -0.657 0.006

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21221.36291.35882.01572.04241.8646
O21.21222.29462.26792.52763.15102.2905
N31.36292.29462.23441.00281.00303.0398
O41.35882.26792.23443.13832.36980.9643
H52.01572.52761.00283.13831.71993.8490
H62.04243.15101.00302.36981.71993.3076
H71.86462.29053.03980.96433.84903.3076

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 116.044 C1 N3 H6 118.576
C1 O4 H7 105.502 O2 C1 N3 125.923
O2 C1 O4 123.695 N3 C1 O4 110.357
H5 N3 H6 118.058
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability