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

using model chemistry: MP2/6-311G**

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 MP2/6-311G**
 hartrees
Energy at 0K-244.600375
Energy at 298.15K 
HF Energy-243.894383
Nuclear repulsion energy123.521259
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 MP2/6-311G**
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' 3873 3681 90.12      
2 A' 3832 3641 76.26      
3 A' 3688 3504 69.13      
4 A' 1885 1791 485.83      
5 A' 1635 1553 139.28      
6 A' 1452 1380 130.30      
7 A' 1253 1191 222.55      
8 A' 1088 1034 34.33      
9 A' 970 921 44.26      
10 A' 593 563 35.40      
11 A' 494 470 4.64      
12 A" 782 743 21.51      
13 A" 589 560 52.12      
14 A" 456 434 81.73      
15 A" 380i 361i 243.74      

Unscaled Zero Point Vibrational Energy (zpe) 11104.4 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 10551.4 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 MP2/6-311G**
ABC
0.38467 0.36352 0.18690

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.134 0.000
O2 -0.055 1.343 0.000
N3 1.133 -0.616 0.000
O4 -1.095 -0.677 0.000
H5 2.017 -0.142 0.000
H6 1.090 -1.618 0.000
H7 -1.841 -0.068 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21061.35871.36202.03552.06341.8524
O21.21062.29122.27172.54893.17492.2764
N31.35872.29122.22851.00291.00313.0246
O41.36202.27172.22853.15702.37880.9636
H52.03552.54891.00293.15701.74323.8588
H62.06343.17491.00312.37881.74323.3161
H71.85242.27643.02460.96363.85883.3161

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 118.282 C1 N3 H6 121.033
C1 O4 H7 104.286 O2 C1 N3 126.098
O2 C1 O4 123.917 N3 C1 O4 109.985
H5 N3 H6 120.685
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at MP2/6-311G**
 hartrees
Energy at 0K-244.600993
Energy at 298.15K-244.605935
HF Energy-243.894111
Nuclear repulsion energy123.448570
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 MP2/6-311G**
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 3872 3680 90.07      
2 A 3785 3596 54.47      
3 A 3654 3472 48.25      
4 A 1885 1791 447.78      
5 A 1642 1560 116.36      
6 A 1450 1378 132.95      
7 A 1262 1199 169.75      
8 A 1110 1055 85.42      
9 A 972 923 41.03      
10 A 787 748 47.98      
11 A 597 567 55.84      
12 A 571 543 72.70      
13 A 505 480 19.50      
14 A 487 463 162.21      
15 A 443 421 137.69      

Unscaled Zero Point Vibrational Energy (zpe) 11510.8 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 10937.5 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 MP2/6-311G**
ABC
0.38442 0.36224 0.18704

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.044 0.127 -0.002
O2 -0.485 1.253 0.008
N3 1.279 -0.220 -0.068
O4 -0.817 -0.993 0.003
H5 1.920 0.515 0.178
H6 1.524 -1.154 0.214
H7 -1.722 -0.662 0.004

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.20931.36891.36072.00992.03601.8540
O21.20932.29872.27012.52103.14172.2792
N31.36892.29872.23501.00591.00623.0339
O41.36072.27012.23503.12982.35620.9637
H52.00992.52101.00593.12981.71573.8311
H62.03603.14171.00622.35621.71573.2899
H71.85402.27923.03390.96373.83113.2899

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 114.769 C1 N3 H6 117.198
C1 O4 H7 104.513 O2 C1 N3 126.044
O2 C1 O4 123.984 N3 C1 O4 109.933
H5 N3 H6 117.004
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability