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

using model chemistry: B2PLYP=FULL/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-245.089340
Energy at 298.15K 
HF Energy-244.801213
Nuclear repulsion energy123.767446
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/cc-pVTZ
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' 3815 3647 89.22      
2 A' 3793 3625 69.32      
3 A' 3655 3494 59.31      
4 A' 1838 1757 501.15      
5 A' 1629 1557 112.82      
6 A' 1440 1377 131.38      
7 A' 1237 1182 195.88      
8 A' 1083 1035 45.03      
9 A' 959 916 44.80      
10 A' 588 562 33.11      
11 A' 491 469 6.52      
12 A" 790 755 23.65      
13 A" 593 567 53.88      
14 A" 483 462 63.62      
15 A" 188i 180i 211.93      

Unscaled Zero Point Vibrational Energy (zpe) 11102.7 cm-1
Scaled (by 0.9558) Zero Point Vibrational Energy (zpe) 10612.0 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/cc-pVTZ
ABC
0.38723 0.36414 0.18766

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.130 0.000
O2 -0.074 1.337 0.000
N3 1.141 -0.595 0.000
O4 -1.085 -0.689 0.000
H5 2.014 -0.107 0.000
H6 1.119 -1.595 0.000
H7 -1.848 -0.099 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.20931.35251.35982.02772.05631.8619
O21.20932.28302.26462.53873.16572.2823
N31.35252.28302.22860.99971.00013.0301
O41.35982.26462.22863.15322.38280.9642
H52.02772.53870.99973.15321.73673.8616
H62.05633.16571.00012.38281.73673.3223
H71.86192.28233.03010.96423.86163.3223

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 118.324 C1 N3 H6 121.135
C1 O4 H7 105.218 O2 C1 N3 125.953
O2 C1 O4 123.540 N3 C1 O4 110.508
H5 N3 H6 120.541
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at B2PLYP=FULL/cc-pVTZ
 hartrees
Energy at 0K-245.089398
Energy at 298.15K-245.094130
HF Energy-244.801206
Nuclear repulsion energy123.726921
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/cc-pVTZ
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 3817 3648 89.25      
2 A 3775 3608 62.83      
3 A 3643 3482 52.33      
4 A 1840 1758 487.71      
5 A 1633 1561 104.43      
6 A 1438 1375 132.97      
7 A 1239 1184 176.74      
8 A 1090 1042 63.76      
9 A 959 917 43.99      
10 A 789 754 28.92      
11 A 592 566 50.73      
12 A 582 556 51.19      
13 A 498 476 23.99      
14 A 472 451 32.23      
15 A 264 252 231.66      

Unscaled Zero Point Vibrational Energy (zpe) 11315.3 cm-1
Scaled (by 0.9558) Zero Point Vibrational Energy (zpe) 10815.2 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/cc-pVTZ
ABC
0.38714 0.36348 0.18767

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.038 0.125 -0.002
O2 -0.460 1.257 0.005
N3 1.268 -0.237 -0.041
O4 -0.837 -0.975 0.002
H5 1.946 0.484 0.109
H6 1.525 -1.190 0.129
H7 -1.740 -0.636 0.006

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.20851.35641.35972.01932.04681.8641
O21.20852.28572.26402.52963.15372.2851
N31.35642.28572.23171.00091.00143.0349
O41.35972.26402.23173.14432.37540.9641
H52.01932.52961.00093.14431.72633.8535
H62.04683.15371.00142.37541.72633.3137
H71.86412.28513.03490.96413.85353.3137

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 117.076 C1 N3 H6 119.724
C1 O4 H7 105.409 O2 C1 N3 125.936
O2 C1 O4 123.551 N3 C1 O4 110.501
H5 N3 H6 119.116
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability