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

using model chemistry: B2PLYP=FULL/STO-3G

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 B2PLYP=FULL/STO-3G
 hartrees
Energy at 0K-241.451255
Energy at 298.15K 
HF Energy-241.373660
Nuclear repulsion energy118.542661
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 B2PLYP=FULL/STO-3G
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' 4008 4008 14.01      
2 A' 3803 3803 17.05      
3 A' 3783 3783 43.00      
4 A' 1932 1932 130.54      
5 A' 1715 1715 39.12      
6 A' 1518 1518 41.12      
7 A' 1328 1328 211.24      
8 A' 1071 1071 16.78      
9 A' 946 946 7.52      
10 A' 510 510 18.76      
11 A' 433 433 5.63      
12 A" 642 642 13.04      
13 A" 553 553 64.20      
14 A" 445 445 15.38      
15 A" 514i 514i 285.95      

Unscaled Zero Point Vibrational Energy (zpe) 11085.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11085.1 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 B2PLYP=FULL/STO-3G
ABC
0.35247 0.33597 0.17201

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.157 0.000
O2 -0.092 1.407 0.000
N3 1.186 -0.621 0.000
O4 -1.115 -0.743 0.000
H5 2.109 -0.161 0.000
H6 1.145 -1.652 0.000
H7 -1.895 -0.085 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.25321.41801.43302.13242.14071.9107
O21.25322.39662.38092.70213.29932.3403
N31.41802.39662.30391.03111.03183.1271
O41.43302.38092.30393.27572.43571.0207
H52.13242.70211.03113.27571.77514.0045
H62.14073.29931.03182.43571.77513.4201
H71.91072.34033.12711.02074.00453.4201

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 120.258 C1 N3 H6 121.001
C1 O4 H7 100.944 O2 C1 N3 127.482
O2 C1 O4 124.696 N3 C1 O4 107.822
H5 N3 H6 118.741
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at B2PLYP=FULL/STO-3G
 hartrees
Energy at 0K-241.455443
Energy at 298.15K-241.459913
HF Energy-241.376114
Nuclear repulsion energy117.984959
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 B2PLYP=FULL/STO-3G
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 3835 3835 0.12      
2 A 3799 3799 12.80      
3 A 3633 3633 5.48      
4 A 1916 1916 91.03      
5 A 1794 1794 16.43      
6 A 1519 1519 40.78      
7 A 1354 1354 81.29      
8 A 1161 1161 79.79      
9 A 947 947 24.49      
10 A 732 732 225.58      
11 A 601 601 60.03      
12 A 556 556 75.24      
13 A 508 508 16.27      
14 A 449 449 0.79      
15 A 316 316 39.89      

Unscaled Zero Point Vibrational Energy (zpe) 11559.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11559.5 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 B2PLYP=FULL/STO-3G
ABC
0.35187 0.32842 0.17130

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/STO-3G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.062 0.143 0.001
O2 -0.608 1.269 0.010
N3 1.367 -0.144 -0.120
O4 -0.763 -1.099 0.005
H5 1.916 0.625 0.335
H6 1.590 -1.045 0.370
H7 -1.734 -0.785 0.004

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.25171.46241.42622.06362.06811.9122
O21.25172.43192.37372.62553.21182.3427
N31.46242.43192.33731.04881.04913.1688
O41.42622.37372.33733.20302.38191.0211
H52.06362.62551.04883.20301.70133.9273
H62.06813.21181.04912.38191.70133.3547
H71.91222.34273.16881.02113.92733.3547

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 109.412 C1 N3 H6 109.766
C1 O4 H7 101.484 O2 C1 N3 127.105
O2 C1 O4 124.724 N3 C1 O4 108.013
H5 N3 H6 108.371
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability