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

using model chemistry: QCISD/6-311G**

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 QCISD/6-311G**
 hartrees
Energy at 0K-244.614734
Energy at 298.15K 
HF Energy-243.895007
Nuclear repulsion energy123.682123
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 QCISD/6-311G**
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' 3897 3719 80.54      
2 A' 3825 3650 66.21      
3 A' 3689 3520 61.78      
4 A' 1883 1797 517.49      
5 A' 1647 1572 135.71      
6 A' 1469 1402 124.26      
7 A' 1273 1215 228.70      
8 A' 1098 1048 34.69      
9 A' 979 934 34.57      
10 A' 598 571 37.97      
11 A' 496 473 4.56      
12 A" 791 755 28.87      
13 A" 585 558 51.56      
14 A" 460 439 80.86      
15 A" 386i 369i 246.18      

Unscaled Zero Point Vibrational Energy (zpe) 11153.4 cm-1
Scaled (by 0.9541) Zero Point Vibrational Energy (zpe) 10641.5 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 QCISD/6-311G**
ABC
0.38718 0.36304 0.18736

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.133 0.000
O2 -0.050 1.339 0.000
N3 1.132 -0.620 0.000
O4 -1.098 -0.667 0.000
H5 2.017 -0.149 0.000
H6 1.086 -1.622 0.000
H7 -1.844 -0.061 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.20791.35891.35842.03622.06321.8542
O21.20792.28792.26412.54643.17152.2763
N31.35892.28792.22991.00261.00293.0276
O41.35842.26412.22993.15742.38310.9614
H52.03622.54641.00263.15741.74253.8616
H62.06323.17151.00292.38311.74253.3195
H71.85422.27633.02760.96143.86163.3195

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 118.347 C1 N3 H6 121.006
C1 O4 H7 104.827 O2 C1 N3 125.978
O2 C1 O4 123.726 N3 C1 O4 110.296
H5 N3 H6 120.647
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at QCISD/6-311G**
 hartrees
Energy at 0K-244.615428
Energy at 298.15K-244.620387
HF Energy-243.894674
Nuclear repulsion energy123.589655
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 QCISD/6-311G**
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 3896 3717 80.71      
2 A 3772 3599 44.12      
3 A 3651 3483 39.98      
4 A 1887 1800 475.12      
5 A 1656 1580 110.27      
6 A 1467 1400 125.32      
7 A 1282 1224 173.78      
8 A 1124 1072 86.77      
9 A 980 935 30.90      
10 A 797 760 61.18      
11 A 602 575 57.52      
12 A 566 540 78.52      
13 A 507 484 22.20      
14 A 496 473 170.71      
15 A 443 423 118.69      

Unscaled Zero Point Vibrational Energy (zpe) 11562.4 cm-1
Scaled (by 0.9541) Zero Point Vibrational Energy (zpe) 11031.7 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 QCISD/6-311G**
ABC
0.38699 0.36138 0.18746

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.043 0.125 -0.003
O2 -0.475 1.252 0.009
N3 1.279 -0.228 -0.070
O4 -0.826 -0.983 0.003
H5 1.921 0.504 0.185
H6 1.518 -1.160 0.223
H7 -1.728 -0.652 0.005

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.20631.37081.35672.00952.03491.8556
O21.20632.29632.26222.51643.13602.2792
N31.37082.29632.23791.00611.00643.0386
O41.35672.26222.23793.12882.36030.9615
H52.00952.51641.00613.12881.71283.8324
H62.03493.13601.00642.36031.71283.2928
H71.85562.27923.03860.96153.83243.2928

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 114.567 C1 N3 H6 116.906
C1 O4 H7 105.066 O2 C1 N3 125.885
O2 C1 O4 123.814 N3 C1 O4 110.265
H5 N3 H6 116.662
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability