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

using model chemistry: MP3=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 MP3=FULL/6-31G*
 hartrees
Energy at 0K-244.476091
Energy at 298.15K 
HF Energy-243.818175
Nuclear repulsion energy123.646429
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 MP3=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' 3828 3592 78.40      
2 A' 3813 3578 85.64      
3 A' 3698 3469 75.99      
4 A' 1938 1818 556.54      
5 A' 1672 1569 175.85      
6 A' 1509 1416 125.83      
7 A' 1290 1211 224.70      
8 A' 1123 1054 28.72      
9 A' 1003 941 31.79      
10 A' 601 564 42.17      
11 A' 500 469 6.69      
12 A" 798 749 45.80      
13 A" 610 573 77.23      
14 A" 503 472 69.83      
15 A" 267i 251i 314.26      

Unscaled Zero Point Vibrational Energy (zpe) 11308.9 cm-1
Scaled (by 0.9383) Zero Point Vibrational Energy (zpe) 10611.1 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 MP3=FULL/6-31G*
ABC
0.38712 0.36358 0.18749

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.130 0.000
O2 -0.071 1.339 0.000
N3 1.140 -0.600 0.000
O4 -1.086 -0.685 0.000
H5 2.019 -0.114 0.000
H6 1.114 -1.605 0.000
H7 -1.853 -0.090 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21151.35311.35752.03402.06171.8661
O21.21152.28612.26422.54603.17392.2839
N31.35312.28612.22691.00521.00553.0359
O41.35752.26422.22693.15722.38430.9713
H52.03402.54601.00523.15721.74473.8726
H62.06173.17391.00552.38431.74473.3317
H71.86612.28393.03590.97133.87263.3317

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 118.444 C1 N3 H6 121.174
C1 O4 H7 105.306 O2 C1 N3 126.010
O2 C1 O4 123.511 N3 C1 O4 110.479
H5 N3 H6 120.383
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at MP3=FULL/6-31G*
 hartrees
Energy at 0K-244.476301
Energy at 298.15K-244.481178
HF Energy-243.818095
Nuclear repulsion energy123.581016
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 MP3=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 3812 3577 87.96      
2 A 3796 3562 61.88      
3 A 3674 3447 59.85      
4 A 1940 1821 526.36      
5 A 1683 1579 148.28      
6 A 1508 1415 135.52      
7 A 1295 1215 193.35      
8 A 1139 1068 58.13      
9 A 1004 942 30.91      
10 A 799 750 62.92      
11 A 607 569 73.00      
12 A 595 558 74.52      
13 A 516 484 29.99      
14 A 480 450 20.38      
15 A 363 341 331.06      

Unscaled Zero Point Vibrational Energy (zpe) 11604.7 cm-1
Scaled (by 0.9383) Zero Point Vibrational Energy (zpe) 10888.7 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 MP3=FULL/6-31G*
ABC
0.38704 0.36242 0.18752

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.040 0.123 -0.002
O2 -0.473 1.253 0.007
N3 1.273 -0.228 -0.055
O4 -0.827 -0.982 0.002
H5 1.937 0.504 0.142
H6 1.532 -1.174 0.174
H7 -1.740 -0.649 0.006

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21041.36031.35672.01832.04541.8674
O21.21042.29082.26302.52763.15282.2859
N31.36032.29082.23251.00721.00763.0432
O41.35672.26302.23253.14112.37270.9714
H52.01832.52761.00723.14111.72653.8559
H62.04543.15281.00762.37271.72653.3175
H71.86742.28593.04320.97143.85593.3175

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 116.168 C1 N3 H6 118.735
C1 O4 H7 105.466 O2 C1 N3 125.925
O2 C1 O4 123.551 N3 C1 O4 110.500
H5 N3 H6 117.951
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability