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

using model chemistry: CCSD(T)/TZVP

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 CCSD(T)/TZVP
 hartrees
Energy at 0K-244.661017
Energy at 298.15K 
HF Energy-243.915053
Nuclear repulsion energy123.343099
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 CCSD(T)/TZVP
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' 3827 3683        
2 A' 3793 3651        
3 A' 3653 3516        
4 A' 1842 1773        
5 A' 1635 1574        
6 A' 1441 1387        
7 A' 1253 1206        
8 A' 1088 1047        
9 A' 956 920        
10 A' 591 568        
11 A' 494 476        
12 A" 749 721        
13 A" 562 541        
14 A" 419 403        
15 A" 446i 429i        

Unscaled Zero Point Vibrational Energy (zpe) 10927.1 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 10517.4 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 CCSD(T)/TZVP
ABC
0.38405 0.36208 0.18637

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.132 0.000
O2 -0.068 1.343 0.000
N3 1.142 -0.602 0.000
O4 -1.091 -0.688 0.000
H5 2.020 -0.116 0.000
H6 1.113 -1.606 0.000
H7 -1.854 -0.094 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21221.35801.36522.03562.06381.8677
O21.21222.29062.27382.54763.17612.2918
N31.35802.29062.23531.00361.00393.0390
O41.36522.27382.23533.16382.38780.9667
H52.03562.54761.00363.16381.74403.8744
H62.06383.17611.00392.38781.74403.3300
H71.86772.29183.03900.96673.87443.3300

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 118.306 C1 N3 H6 121.071
C1 O4 H7 105.154 O2 C1 N3 125.957
O2 C1 O4 123.707 N3 C1 O4 110.336
H5 N3 H6 120.623
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at CCSD(T)/TZVP
 hartrees
Energy at 0K-244.661912
Energy at 298.15K-244.666849
HF Energy-243.914413
Nuclear repulsion energy123.244555
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 CCSD(T)/TZVP
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 3825 3682        
2 A 3738 3598        
3 A 3614 3479        
4 A 1845 1776        
5 A 1643 1581        
6 A 1438 1385        
7 A 1265 1218        
8 A 1112 1070        
9 A 957 921        
10 A 762 733        
11 A 596 574        
12 A 553 532        
13 A 534 514        
14 A 502 483        
15 A 429 413        

Unscaled Zero Point Vibrational Energy (zpe) 11406.7 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 10979.0 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 CCSD(T)/TZVP
ABC
0.38402 0.36019 0.18646

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/TZVP

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.040 0.126 -0.001
O2 -0.463 1.261 0.008
N3 1.279 -0.240 -0.072
O4 -0.838 -0.979 0.004
H5 1.927 0.485 0.191
H6 1.508 -1.176 0.222
H7 -1.743 -0.641 -0.002

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21071.37051.36342.00882.03451.8685
O21.21072.30012.27112.51973.14072.2929
N31.37052.30012.24341.00711.00763.0497
O41.36342.27112.24343.13432.36350.9668
H52.00882.51971.00713.13431.71283.8445
H62.03453.14071.00762.36351.71283.3023
H71.86852.29293.04970.96683.84453.3023

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 114.460 C1 N3 H6 116.818
C1 O4 H7 105.344 O2 C1 N3 125.919
O2 C1 O4 123.737 N3 C1 O4 110.291
H5 N3 H6 116.464
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability