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

using model chemistry: CCSD(T)/cc-pVTZ

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)/cc-pVTZ
 hartrees
Energy at 0K-244.799851
Energy at 298.15K 
HF Energy-243.923953
Nuclear repulsion energy123.606020
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)/cc-pVTZ
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 3729        
2 A' 3797 3702        
3 A' 3657 3565        
4 A' 1853 1806        
5 A' 1624 1583        
6 A' 1451 1414        
7 A' 1244 1213        
8 A' 1083 1056        
9 A' 963 939        
10 A' 587 572        
11 A' 487 474        
12 A" 787 767        
13 A" 591 576        
14 A" 478 466        
15 A" 283i 275i        

Unscaled Zero Point Vibrational Energy (zpe) 11071.5 cm-1
Scaled (by 0.9748) Zero Point Vibrational Energy (zpe) 10792.5 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 CCSD(T)/cc-pVTZ
ABC
0.38608 0.36322 0.18715

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.131 0.000
O2 -0.063 1.340 0.000
N3 1.138 -0.608 0.000
O4 -1.092 -0.681 0.000
H5 2.015 -0.126 0.000
H6 1.102 -1.608 0.000
H7 -1.845 -0.077 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21071.35651.36072.03192.05881.8564
O21.21072.28792.26792.54353.16982.2771
N31.35652.28792.23101.00091.00113.0292
O41.36072.26792.23103.15662.38180.9645
H52.03192.54351.00093.15661.74073.8604
H62.05883.16981.00112.38181.74073.3203
H71.85642.27713.02920.96453.86043.3203

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 118.278 C1 N3 H6 120.933
C1 O4 H7 104.660 O2 C1 N3 125.954
O2 C1 O4 123.661 N3 C1 O4 110.384
H5 N3 H6 120.789
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at CCSD(T)/cc-pVTZ
 hartrees
Energy at 0K-244.800162
Energy at 298.15K-244.805022
HF Energy-243.923732
Nuclear repulsion energy123.522023
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)/cc-pVTZ
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 3823 3727        
2 A 3754 3660        
3 A 3626 3534        
4 A 1854 1808        
5 A 1631 1590        
6 A 1449 1412        
7 A 1251 1219        
8 A 1100 1072        
9 A 964 940        
10 A 787 767        
11 A 590 576        
12 A 572 557        
13 A 498 485        
14 A 461 450        
15 A 388 378        

Unscaled Zero Point Vibrational Energy (zpe) 11373.5 cm-1
Scaled (by 0.9748) Zero Point Vibrational Energy (zpe) 11086.9 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 CCSD(T)/cc-pVTZ
ABC
0.38620 0.36156 0.18720

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.041 0.124 -0.002
O2 -0.471 1.255 0.007
N3 1.277 -0.230 -0.062
O4 -0.830 -0.983 0.002
H5 1.928 0.499 0.164
H6 1.521 -1.169 0.197
H7 -1.732 -0.641 0.009

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.20971.36581.35942.01142.03761.8567
O21.20972.29482.26582.52073.14322.2769
N31.36582.29482.23811.00371.00413.0380
O41.35942.26582.23813.13532.36680.9647
H52.01142.52071.00373.13531.71713.8373
H62.03763.14321.00412.36681.71713.3015
H71.85672.27693.03800.96473.83733.3015

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 115.323 C1 N3 H6 117.780
C1 O4 H7 104.774 O2 C1 N3 125.894
O2 C1 O4 123.651 N3 C1 O4 110.424
H5 N3 H6 117.576
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability