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

using model chemistry: CCSD=FULL/6-31G*

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=FULL/6-31G*
 hartrees
Energy at 0K-244.486269
Energy at 298.15K 
HF Energy-243.817359
Nuclear repulsion energy123.341413
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=FULL/6-31G*
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' 3795 3604 71.40      
2 A' 3764 3575 78.21      
3 A' 3664 3480 71.14      
4 A' 1909 1813 517.38      
5 A' 1662 1578 159.69      
6 A' 1497 1422 124.21      
7 A' 1280 1216 218.27      
8 A' 1114 1058 29.75      
9 A' 990 941 32.93      
10 A' 594 564 40.56      
11 A' 496 471 6.35      
12 A" 790 750 44.56      
13 A" 608 578 75.98      
14 A" 497 472 68.20      
15 A" 286i 272i 311.05      

Unscaled Zero Point Vibrational Energy (zpe) 11186.6 cm-1
Scaled (by 0.9498) Zero Point Vibrational Energy (zpe) 10625.1 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=FULL/6-31G*
ABC
0.38440 0.36258 0.18659

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.130 0.000
O2 -0.073 1.344 0.000
N3 1.141 -0.600 0.000
O4 -1.086 -0.690 0.000
H5 2.023 -0.113 0.000
H6 1.117 -1.608 0.000
H7 -1.856 -0.092 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21561.35521.36122.03762.06581.8693
O21.21562.29202.27222.55253.18202.2896
N31.35522.29202.22961.00721.00763.0401
O41.36122.27222.22963.16242.38660.9743
H52.03762.55251.00723.16241.74773.8790
H62.06583.18201.00762.38661.74773.3366
H71.86932.28963.04010.97433.87903.3366

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 118.461 C1 N3 H6 121.220
C1 O4 H7 105.130 O2 C1 N3 126.054
O2 C1 O4 123.617 N3 C1 O4 110.329
H5 N3 H6 120.319
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at CCSD=FULL/6-31G*
 hartrees
Energy at 0K-244.486549
Energy at 298.15K-244.491427
HF Energy-243.817216
Nuclear repulsion energy123.261982
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=FULL/6-31G*
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 3763 3574 80.60      
2 A 3758 3569 53.71      
3 A 3636 3453 52.65      
4 A 1911 1815 484.77      
5 A 1675 1590 131.65      
6 A 1495 1420 132.20      
7 A 1285 1221 182.04      
8 A 1132 1075 64.41      
9 A 991 941 31.52      
10 A 791 751 64.71      
11 A 601 571 82.03      
12 A 590 560 66.55      
13 A 512 486 25.73      
14 A 474 451 19.44      
15 A 386 367 326.40      

Unscaled Zero Point Vibrational Energy (zpe) 11498.8 cm-1
Scaled (by 0.9498) Zero Point Vibrational Energy (zpe) 10921.6 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=FULL/6-31G*
ABC
0.38428 0.36123 0.18661

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.041 0.124 -0.002
O2 -0.479 1.256 0.007
N3 1.277 -0.225 -0.059
O4 -0.824 -0.988 0.003
H5 1.936 0.510 0.153
H6 1.535 -1.169 0.188
H7 -1.740 -0.657 0.006

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21451.36361.36022.01962.04711.8706
O21.21452.29772.27082.53133.15782.2918
N31.36362.29772.23601.00961.01003.0485
O41.36022.27082.23603.14382.37350.9743
H52.01962.53131.00963.14381.72673.8597
H62.04713.15781.01002.37351.72673.3204
H71.87062.29183.04850.97433.85973.3204

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 115.835 C1 N3 H6 118.418
C1 O4 H7 105.306 O2 C1 N3 125.958
O2 C1 O4 123.666 N3 C1 O4 110.348
H5 N3 H6 117.516
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability