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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-244.584648
Energy at 298.15K 
HF Energy-243.881803
Nuclear repulsion energy123.690379
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' 3849 3685 59.17      
2 A' 3822 3659 55.37      
3 A' 3688 3531 56.27      
4 A' 1886 1806 541.93      
5 A' 1688 1616 126.57      
6 A' 1482 1419 128.77      
7 A' 1289 1234 243.58      
8 A' 1114 1066 39.60      
9 A' 982 941 32.80      
10 A' 600 574 39.21      
11 A' 499 478 5.88      
12 A" 799 765 35.90      
13 A" 607 581 74.85      
14 A" 488 468 80.18      
15 A" 358i 343i 290.09      

Unscaled Zero Point Vibrational Energy (zpe) 11217.6 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 10739.7 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
0.38743 0.36299 0.18741

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 0.132 0.000
O2 -0.063 1.339 0.000
N3 1.137 -0.609 0.000
O4 -1.091 -0.676 0.000
H5 2.018 -0.133 0.000
H6 1.104 -1.611 0.000
H7 -1.853 -0.090 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.20891.35711.35752.03552.06331.8665
O21.20892.28812.26272.54903.17272.2912
N31.35712.28812.22821.00201.00233.0347
O41.35752.26272.22823.15582.38510.9621
H52.03552.54901.00203.15581.73813.8717
H62.06333.17271.00232.38511.73813.3254
H71.86652.29123.03470.96213.87173.3254

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 118.504 C1 N3 H6 121.237
C1 O4 H7 105.895 O2 C1 N3 126.083
O2 C1 O4 123.584 N3 C1 O4 110.333
H5 N3 H6 120.260
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at QCISD/6-311G*
 hartrees
Energy at 0K-244.585168
Energy at 298.15K-244.590139
HF Energy-243.881583
Nuclear repulsion energy123.604690
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 3848 3684 59.53      
2 A 3776 3615 38.90      
3 A 3655 3500 38.22      
4 A 1890 1810 501.79      
5 A 1701 1629 108.75      
6 A 1480 1417 127.02      
7 A 1297 1242 189.00      
8 A 1138 1089 90.06      
9 A 982 940 30.39      
10 A 803 769 66.35      
11 A 605 580 72.43      
12 A 590 565 82.25      
13 A 515 493 19.24      
14 A 481 461 111.80      
15 A 451 432 224.15      

Unscaled Zero Point Vibrational Energy (zpe) 11606.3 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 11111.9 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 QCISD/6-311G*
ABC
0.38726 0.36149 0.18747

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 -0.042 0.125 -0.003
O2 -0.475 1.252 0.008
N3 1.278 -0.228 -0.065
O4 -0.826 -0.981 0.004
H5 1.927 0.501 0.172
H6 1.523 -1.165 0.204
H7 -1.735 -0.665 0.004

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.20741.36751.35642.01202.03861.8683
O21.20742.29542.26102.52213.14222.2940
N31.36752.29542.23561.00481.00533.0447
O41.35642.26102.23563.13142.36470.9621
H52.01202.52211.00483.13141.71473.8466
H62.03863.14221.00532.36471.71473.3018
H71.86832.29403.04470.96213.84663.3018

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 115.164 C1 N3 H6 117.641
C1 O4 H7 106.131 O2 C1 N3 126.004
O2 C1 O4 123.642 N3 C1 O4 110.324
H5 N3 H6 117.088
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability