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

using model chemistry: CCD/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 CCD/6-31+G**
 hartrees
Energy at 0K-244.515424
Energy at 298.15K 
HF Energy-243.842096
Nuclear repulsion energy123.387788
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/6-31+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' 3904 3678 96.96      
2 A' 3872 3648 83.31      
3 A' 3728 3513 74.93      
4 A' 1881 1772 672.84      
5 A' 1674 1577 136.99      
6 A' 1478 1393 177.50      
7 A' 1267 1194 204.16      
8 A' 1114 1050 36.73      
9 A' 990 932 40.75      
10 A' 594 560 37.56      
11 A' 498 469 6.45      
12 A" 780 735 25.97      
13 A" 591 557 67.20      
14 A" 469 442 85.07      
15 A" 315i 296i 269.83      

Unscaled Zero Point Vibrational Energy (zpe) 11261.1 cm-1
Scaled (by 0.9423) Zero Point Vibrational Energy (zpe) 10611.4 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/6-31+G**
ABC
0.38470 0.36207 0.18652

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.129 0.000
O2 -0.072 1.343 0.000
N3 1.143 -0.600 0.000
O4 -1.088 -0.688 0.000
H5 2.019 -0.113 0.000
H6 1.119 -1.602 0.000
H7 -1.860 -0.107 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21631.35581.36082.03362.06091.8747
O21.21632.29152.27132.54783.17652.3023
N31.35582.29152.23341.00221.00243.0431
O41.36082.27132.23343.16042.38880.9655
H52.03362.54781.00223.16041.74033.8789
H62.06093.17651.00242.38881.74033.3324
H71.87472.30233.04310.96553.87893.3324

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 118.410 C1 N3 H6 121.106
C1 O4 H7 106.139 O2 C1 N3 125.893
O2 C1 O4 123.508 N3 C1 O4 110.599
H5 N3 H6 120.484
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at CCD/6-31+G**
 hartrees
Energy at 0K-244.515697
Energy at 298.15K-244.520581
HF Energy-243.841761
Nuclear repulsion energy123.328442
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/6-31+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 3902 3677 96.73      
2 A 3839 3618 68.09      
3 A 3703 3490 58.55      
4 A 1884 1775 630.76      
5 A 1682 1585 119.03      
6 A 1476 1391 176.08      
7 A 1273 1199 167.86      
8 A 1129 1064 71.51      
9 A 990 933 39.28      
10 A 785 740 43.18      
11 A 598 564 54.29      
12 A 578 544 78.84      
13 A 506 477 28.16      
14 A 466 439 26.68      
15 A 400 377 294.12      

Unscaled Zero Point Vibrational Energy (zpe) 11605.3 cm-1
Scaled (by 0.9423) Zero Point Vibrational Energy (zpe) 10935.7 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 CCD/6-31+G**
ABC
0.38471 0.36091 0.18657

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.039 0.123 -0.001
O2 -0.463 1.262 0.006
N3 1.275 -0.238 -0.056
O4 -0.838 -0.977 0.003
H5 1.941 0.486 0.145
H6 1.524 -1.185 0.171
H7 -1.747 -0.650 0.002

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21511.36311.35982.01782.04471.8755
O21.21512.29602.26982.52963.15572.3037
N31.36312.29602.23901.00431.00463.0502
O41.35982.26982.23903.14382.37710.9656
H52.01782.52961.00433.14381.72203.8618
H62.04473.15571.00462.37711.72203.3185
H71.87552.30373.05020.96563.86183.3185

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 116.111 C1 N3 H6 118.661
C1 O4 H7 106.275 O2 C1 N3 125.788
O2 C1 O4 123.555 N3 C1 O4 110.627
H5 N3 H6 118.010
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability