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

using model chemistry: QCISD(T)/aug-cc-pVDZ

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(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-244.612117
Energy at 298.15K 
HF Energy-243.866053
Nuclear repulsion energy122.410935
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(T)/aug-cc-pVDZ
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' 3781 3697        
2 A' 3769 3685        
3 A' 3621 3541        
4 A' 1801 1761        
5 A' 1616 1580        
6 A' 1421 1389        
7 A' 1238 1211        
8 A' 1073 1049        
9 A' 936 916        
10 A' 575 562        
11 A' 480 469        
12 A" 766 749        
13 A" 582 569        
14 A" 477 467        
15 A" 251i 245i        

Unscaled Zero Point Vibrational Energy (zpe) 10942.9 cm-1
Scaled (by 0.9778) Zero Point Vibrational Energy (zpe) 10700.0 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(T)/aug-cc-pVDZ
ABC
0.37733 0.35732 0.18353

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.133 0.000
O2 -0.068 1.355 0.000
N3 1.150 -0.607 0.000
O4 -1.099 -0.695 0.000
H5 2.034 -0.118 0.000
H6 1.118 -1.616 0.000
H7 -1.863 -0.096 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.22431.36711.37532.04902.07581.8772
O21.22432.30932.29392.56693.19952.3081
N31.36712.30932.25051.00971.01013.0561
O41.37532.29392.25053.18502.40090.9707
H52.04902.56691.00973.18501.75573.8969
H62.07583.19951.01012.40091.75573.3464
H71.87722.30813.05610.97073.89693.3464

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 118.331 C1 N3 H6 120.930
C1 O4 H7 104.983 O2 C1 N3 125.942
O2 C1 O4 123.766 N3 C1 O4 110.292
H5 N3 H6 120.740
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at QCISD(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-244.612350
Energy at 298.15K-244.617132
HF Energy-243.865870
Nuclear repulsion energy122.335293
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(T)/aug-cc-pVDZ
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 3780 3696        
2 A 3725 3642        
3 A 3589 3510        
4 A 1802 1762        
5 A 1617 1581        
6 A 1418 1386        
7 A 1243 1215        
8 A 1089 1065        
9 A 937 916        
10 A 764 747        
11 A 578 565        
12 A 563 550        
13 A 490 479        
14 A 458 448        
15 A 351 343        

Unscaled Zero Point Vibrational Energy (zpe) 11200.6 cm-1
Scaled (by 0.9778) Zero Point Vibrational Energy (zpe) 10952.0 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(T)/aug-cc-pVDZ
ABC
0.37732 0.35596 0.18358

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/aug-cc-pVDZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.040 0.126 -0.001
O2 -0.470 1.272 0.007
N3 1.285 -0.238 -0.061
O4 -0.841 -0.990 0.002
H5 1.950 0.494 0.158
H6 1.530 -1.188 0.190
H7 -1.750 -0.650 0.006

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.22331.37571.37402.03012.05671.8783
O21.22332.31562.29212.54583.17542.3096
N31.37572.31562.25641.01271.01313.0643
O41.37402.29212.25643.16512.38670.9708
H52.03012.54581.01273.16511.73463.8763
H62.05673.17541.01312.38671.73463.3293
H71.87832.30963.06430.97083.87633.3293

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 115.585 C1 N3 H6 118.053
C1 O4 H7 105.161 O2 C1 N3 125.893
O2 C1 O4 123.786 N3 C1 O4 110.287
H5 N3 H6 117.799
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability