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

using model chemistry: CCD/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 CCD/6-31G*
 hartrees
Energy at 0K-244.467015
Energy at 298.15K 
HF Energy-243.817608
Nuclear repulsion energy123.409061
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 CCD/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' 3806 3602 73.74      
2 A' 3784 3582 80.84      
3 A' 3674 3478 72.55      
4 A' 1925 1822 542.81      
5 A' 1665 1576 168.74      
6 A' 1502 1421 125.47      
7 A' 1285 1216 223.64      
8 A' 1118 1058 29.10      
9 A' 995 942 33.02      
10 A' 598 566 40.86      
11 A' 498 471 6.44      
12 A" 790 748 44.66      
13 A" 608 576 77.80      
14 A" 499 473 68.21      
15 A" 288i 273i 313.99      

Unscaled Zero Point Vibrational Energy (zpe) 11229.5 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 10628.8 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 CCD/6-31G*
ABC
0.38519 0.36258 0.18677

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.131 0.000
O2 -0.073 1.342 0.000
N3 1.141 -0.600 0.000
O4 -1.087 -0.688 0.000
H5 2.023 -0.114 0.000
H6 1.117 -1.607 0.000
H7 -1.856 -0.093 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21391.35531.36062.03752.06541.8697
O21.21392.29062.26982.55153.18002.2894
N31.35532.29062.22971.00691.00723.0404
O41.36062.26982.22973.16212.38690.9733
H52.03752.55151.00693.16211.74703.8792
H62.06543.18001.00722.38691.74703.3363
H71.86972.28943.04040.97333.87923.3363

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 118.469 C1 N3 H6 121.212
C1 O4 H7 105.263 O2 C1 N3 126.056
O2 C1 O4 123.579 N3 C1 O4 110.365
H5 N3 H6 120.319
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at CCD/6-31G*
 hartrees
Energy at 0K-244.467299
Energy at 298.15K-244.472191
HF Energy-243.817461
Nuclear repulsion energy123.326688
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 CCD/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 3783 3581 82.93      
2 A 3768 3567 55.59      
3 A 3646 3451 53.91      
4 A 1928 1825 507.33      
5 A 1678 1589 138.19      
6 A 1500 1420 134.74      
7 A 1291 1222 186.67      
8 A 1136 1075 64.11      
9 A 996 942 31.77      
10 A 792 749 65.70      
11 A 604 571 75.04      
12 A 591 559 76.47      
13 A 513 486 25.88      
14 A 476 451 19.55      
15 A 392 371 329.61      

Unscaled Zero Point Vibrational Energy (zpe) 11546.0 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 10928.3 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 CCD/6-31G*
ABC
0.38514 0.36112 0.18679

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.040 0.124 -0.002
O2 -0.475 1.256 0.007
N3 1.276 -0.228 -0.060
O4 -0.827 -0.985 0.003
H5 1.937 0.505 0.154
H6 1.532 -1.172 0.190
H7 -1.742 -0.653 0.006

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21261.36401.35972.01942.04641.8710
O21.21262.29642.26822.53023.15532.2913
N31.36402.29642.23661.00931.00963.0492
O41.35972.26822.23663.14352.37380.9734
H52.01942.53021.00933.14351.72573.8598
H62.04643.15531.00962.37381.72573.3200
H71.87102.29133.04920.97343.85983.3200

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 115.808 C1 N3 H6 118.350
C1 O4 H7 105.439 O2 C1 N3 125.951
O2 C1 O4 123.619 N3 C1 O4 110.402
H5 N3 H6 117.472
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability