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

using model chemistry: MP2=FULL/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
1 2 no C1 1A

Conformer 1 (CS)

Jump to S1C2
Energy calculated at MP2=FULL/6-31G
 hartrees
Energy at 0K-244.153979
Energy at 298.15K-244.158843
HF Energy-243.701773
Nuclear repulsion energy120.641219
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=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' 3796 3606 66.46      
2 A' 3657 3475 38.86      
3 A' 3649 3467 93.92      
4 A' 1784 1695 446.24      
5 A' 1694 1610 67.46      
6 A' 1447 1375 152.01      
7 A' 1228 1166 174.03      
8 A' 1103 1048 70.37      
9 A' 904 858 82.08      
10 A' 567 539 29.76      
11 A' 484 460 9.50      
12 A" 716 680 73.67      
13 A" 590 561 145.42      
14 A" 482 458 106.08      
15 A" 459 436 356.57      

Unscaled Zero Point Vibrational Energy (zpe) 11279.7 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 10716.9 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 MP2=FULL/6-31G
ABC
0.36136 0.35096 0.17804

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.138 0.000
O2 -0.218 1.371 0.000
N3 1.217 -0.485 0.000
O4 -1.027 -0.827 0.000
H5 2.054 0.075 0.000
H6 1.278 -1.491 0.000
H7 -1.892 -0.363 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.25201.36701.40932.05522.07031.9568
O21.25202.34562.34212.61523.22902.4099
N31.36702.34562.26981.00761.00793.1108
O41.40932.34212.26983.21072.39860.9812
H52.05522.61521.00763.21071.74843.9701
H62.07033.22901.00792.39861.74843.3641
H71.95682.40993.11080.98123.97013.3641

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 119.096 C1 N3 H6 120.572
C1 O4 H7 108.560 O2 C1 N3 127.123
O2 C1 O4 123.199 N3 C1 O4 109.678
H5 N3 H6 120.332
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at MP2=FULL/6-31G
 hartrees
Energy at 0K-244.153979
Energy at 298.15K-244.158841
HF Energy-243.701756
Nuclear repulsion energy120.632151
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=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 3796 3606 66.41      
2 A 3658 3476 40.46      
3 A 3650 3467 92.19      
4 A 1786 1697 446.34      
5 A 1695 1610 67.45      
6 A 1446 1374 151.48      
7 A 1227 1166 173.28      
8 A 1103 1048 70.47      
9 A 902 857 83.43      
10 A 716 680 73.26      
11 A 590 560 145.50      
12 A 566 538 29.62      
13 A 484 459 9.51      
14 A 481 457 110.56      
15 A 460 437 352.45      

Unscaled Zero Point Vibrational Energy (zpe) 11278.4 cm-1
Scaled (by 0.9501) Zero Point Vibrational Energy (zpe) 10715.6 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 MP2=FULL/6-31G
ABC
0.36123 0.35095 0.17801

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.025 0.136 -0.000
O2 0.468 1.307 0.000
N3 -1.286 -0.251 -0.000
O4 0.856 -1.004 -0.000
H5 -2.005 0.454 0.000
H6 -1.532 -1.228 0.000
H7 1.792 -0.708 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.25151.36701.41022.05552.07031.9577
O21.25152.34552.34252.61613.22882.4107
N31.36702.34552.27011.00771.00793.1111
O41.41022.34252.27013.21142.39830.9811
H52.05552.61611.00773.21141.74813.9710
H62.07033.22881.00792.39831.74813.3638
H71.95772.41073.11110.98113.97103.3638

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 119.133 C1 N3 H6 120.572
C1 O4 H7 108.571 O2 C1 N3 127.158
O2 C1 O4 123.196 N3 C1 O4 109.646
H5 N3 H6 120.295
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability