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

using model chemistry: QCISD/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 QCISD/cc-pVTZ
 hartrees
Energy at 0K-244.767933
Energy at 298.15K 
HF Energy-243.924878
Nuclear repulsion energy123.963245
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 QCISD/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' 3865 3693 89.56      
2 A' 3823 3653 71.85      
3 A' 3683 3519 64.27      
4 A' 1869 1786 527.99      
5 A' 1642 1569 128.01      
6 A' 1469 1404 132.09      
7 A' 1260 1204 199.93      
8 A' 1096 1048 38.88      
9 A' 979 936 34.48      
10 A' 596 570 36.38      
11 A' 494 472 5.93      
12 A" 803 767 25.99      
13 A" 594 568 55.50      
14 A" 485 464 63.62      
15 A" 264i 252i 220.78      

Unscaled Zero Point Vibrational Energy (zpe) 11197.9 cm-1
Scaled (by 0.9555) Zero Point Vibrational Energy (zpe) 10699.6 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 QCISD/cc-pVTZ
ABC
0.38930 0.36450 0.18825

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.130 0.000
O2 -0.062 1.335 0.000
N3 1.135 -0.607 0.000
O4 -1.090 -0.675 0.000
H5 2.011 -0.127 0.000
H6 1.100 -1.605 0.000
H7 -1.843 -0.077 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.20731.35321.35512.02772.05421.8545
O21.20732.28142.25842.53703.16182.2730
N31.35322.28142.22650.99900.99923.0250
O41.35512.25842.22653.14972.37930.9618
H52.02772.53700.99903.14971.73683.8547
H62.05423.16180.99922.37931.73683.3162
H71.85452.27303.02500.96183.85473.3162

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 118.323 C1 N3 H6 120.940
C1 O4 H7 105.069 O2 C1 N3 125.902
O2 C1 O4 123.508 N3 C1 O4 110.590
H5 N3 H6 120.737
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at QCISD/cc-pVTZ
 hartrees
Energy at 0K-244.768158
Energy at 298.15K-244.773026
HF Energy-243.924737
Nuclear repulsion energy123.891082
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 QCISD/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 3864 3692 89.73      
2 A 3785 3617 57.86      
3 A 3657 3494 49.47      
4 A 1872 1789 498.81      
5 A 1650 1576 108.88      
6 A 1467 1402 134.86      
7 A 1265 1209 167.68      
8 A 1112 1063 71.04      
9 A 980 936 32.06      
10 A 802 767 38.30      
11 A 599 573 48.56      
12 A 578 552 69.52      
13 A 505 482 21.61      
14 A 469 448 21.32      
15 A 363 347 255.69      

Unscaled Zero Point Vibrational Energy (zpe) 11484.3 cm-1
Scaled (by 0.9555) Zero Point Vibrational Energy (zpe) 10973.3 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 QCISD/cc-pVTZ
ABC
0.38918 0.36326 0.18828

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.040 0.123 -0.002
O2 -0.468 1.251 0.007
N3 1.273 -0.231 -0.058
O4 -0.831 -0.977 0.002
H5 1.930 0.495 0.151
H6 1.521 -1.172 0.182
H7 -1.732 -0.640 0.008

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.20621.36121.35412.01072.03661.8554
O21.20622.28692.25712.51773.13912.2748
N31.36122.28692.23211.00141.00173.0326
O41.35412.25712.23213.13142.36610.9619
H52.01072.51771.00143.13141.71643.8358
H62.03663.13911.00172.36611.71643.3000
H71.85542.27483.03260.96193.83583.3000

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 115.818 C1 N3 H6 118.270
C1 O4 H7 105.217 O2 C1 N3 125.830
O2 C1 O4 123.567 N3 C1 O4 110.577
H5 N3 H6 117.935
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability