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

using model chemistry: MP2=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 MP2=FULL/STO-3G
 hartrees
Energy at 0K-240.754073
Energy at 298.15K 
HF Energy-240.545626
Nuclear repulsion energy118.663297
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/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' 4066 3614 11.15      
2 A' 3884 3453 18.74      
3 A' 3840 3414 46.97      
4 A' 1972 1753 106.95      
5 A' 1747 1553 35.78      
6 A' 1553 1381 47.31      
7 A' 1361 1209 220.94      
8 A' 1095 973 18.75      
9 A' 963 856 8.33      
10 A' 524 466 19.70      
11 A' 440 391 4.32      
12 A" 650 578 11.92      
13 A" 542 482 61.26      
14 A" 447 397 14.68      
15 A" 648i 576i 295.73      

Unscaled Zero Point Vibrational Energy (zpe) 11217.5 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 9971.3 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/STO-3G
ABC
0.35381 0.33587 0.17230

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.155 0.000
O2 -0.087 1.405 0.000
N3 1.184 -0.626 0.000
O4 -1.119 -0.735 0.000
H5 2.108 -0.172 0.000
H6 1.138 -1.656 0.000
H7 -1.889 -0.072 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.25261.41831.42972.13362.13861.9028
O21.25262.39552.37582.70273.29622.3303
N31.41832.39552.30501.03011.03033.1224
O41.42972.37582.30503.27592.43741.0163
H52.13362.70271.03013.27591.77243.9988
H62.13863.29621.03032.43741.77243.4164
H71.90282.33033.12241.01633.99883.4164

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 120.422 C1 N3 H6 120.897
C1 O4 H7 100.778 O2 C1 N3 127.392
O2 C1 O4 124.544 N3 C1 O4 108.064
H5 N3 H6 118.681
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at MP2=FULL/STO-3G
 hartrees
Energy at 0K-240.762100
Energy at 298.15K-240.766612
HF Energy-240.547276
Nuclear repulsion energy117.860751
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/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 3878 3447 17.17      
2 A 3853 3425 0.42      
3 A 3654 3248 3.89      
4 A 1929 1714 60.32      
5 A 1839 1635 15.02      
6 A 1556 1383 43.82      
7 A 1391 1237 64.52      
8 A 1205 1071 82.46      
9 A 985 876 82.83      
10 A 848 754 157.12      
11 A 606 538 44.16      
12 A 551 490 66.73      
13 A 522 464 18.71      
14 A 450 400 1.26      
15 A 285 253 42.35      

Unscaled Zero Point Vibrational Energy (zpe) 11775.0 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 10466.8 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/STO-3G
ABC
0.35283 0.32540 0.17100

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/STO-3G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.063 0.139 -0.001
O2 -0.595 1.272 0.012
N3 1.377 -0.161 -0.129
O4 -0.779 -1.089 0.003
H5 1.901 0.616 0.349
H6 1.570 -1.031 0.431
H7 -1.741 -0.759 0.010

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.25261.47571.42122.05112.05401.9037
O21.25262.44172.36832.60273.18832.3329
N31.47572.44172.35051.05271.05233.1777
O41.42122.36832.35053.19522.38801.0169
H52.05112.60271.05273.19521.68213.9081
H62.05403.18831.05232.38801.68213.3484
H71.90372.33293.17771.01693.90813.3484

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 107.249 C1 N3 H6 107.497
C1 O4 H7 101.379 O2 C1 N3 126.823
O2 C1 O4 124.572 N3 C1 O4 108.448
H5 N3 H6 106.089
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability