return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: CCSD/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 CCSD/cc-pVTZ
 hartrees
Energy at 0K-244.765508
Energy at 298.15K 
HF Energy-243.925101
Nuclear repulsion energy124.066380
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 CCSD/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' 3871 3643 90.97      
2 A' 3826 3601 72.89      
3 A' 3686 3470 65.70      
4 A' 1881 1771 544.30      
5 A' 1644 1548 133.44      
6 A' 1474 1387 132.75      
7 A' 1264 1189 201.57      
8 A' 1100 1035 38.16      
9 A' 984 926 33.78      
10 A' 599 564 37.06      
11 A' 496 467 5.98      
12 A" 807 760 26.46      
13 A" 595 560 56.20      
14 A" 487 458 63.55      
15 A" 260i 244i 221.33      

Unscaled Zero Point Vibrational Energy (zpe) 11226.8 cm-1
Scaled (by 0.9412) Zero Point Vibrational Energy (zpe) 10566.7 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 CCSD/cc-pVTZ
ABC
0.39023 0.36489 0.18857

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.130 0.000
O2 -0.060 1.334 0.000
N3 1.134 -0.608 0.000
O4 -1.090 -0.673 0.000
H5 2.011 -0.129 0.000
H6 1.097 -1.606 0.000
H7 -1.843 -0.074 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.20561.35261.35372.02712.05341.8540
O21.20562.27932.25562.53523.15942.2717
N31.35262.27932.22510.99880.99903.0241
O41.35372.25562.22513.14812.37820.9615
H52.02712.53520.99883.14811.73663.8536
H62.05343.15940.99902.37821.73663.3150
H71.85402.27173.02410.96153.85363.3150

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 120.927
C1 O4 H7 105.146 O2 C1 N3 125.892
O2 C1 O4 123.500 N3 C1 O4 110.608
H5 N3 H6 120.750
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at CCSD/cc-pVTZ
 hartrees
Energy at 0K-244.765720
Energy at 298.15K-244.770590
HF Energy-243.924972
Nuclear repulsion energy123.996430
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 CCSD/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 3870 3642 91.09      
2 A 3789 3566 59.10      
3 A 3661 3445 51.03      
4 A 1885 1774 514.86      
5 A 1651 1554 113.67      
6 A 1472 1386 136.36      
7 A 1269 1194 170.42      
8 A 1115 1049 68.99      
9 A 985 927 31.51      
10 A 807 759 38.38      
11 A 602 567 48.26      
12 A 579 545 70.58      
13 A 506 476 21.97      
14 A 471 443 21.78      
15 A 358 337 256.05      

Unscaled Zero Point Vibrational Energy (zpe) 11509.5 cm-1
Scaled (by 0.9412) Zero Point Vibrational Energy (zpe) 10832.8 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 CCSD/cc-pVTZ
ABC
0.39012 0.36368 0.18861

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.041 0.123 -0.002
O2 -0.466 1.250 0.007
N3 1.272 -0.232 -0.057
O4 -0.831 -0.975 0.002
H5 1.930 0.494 0.149
H6 1.520 -1.173 0.180
H7 -1.732 -0.639 0.008

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.20451.36041.35272.01062.03641.8549
O21.20452.28472.25442.51633.13732.2735
N31.36042.28472.23061.00121.00143.0315
O41.35272.25442.23063.13042.36550.9616
H52.01062.51631.00123.13041.71673.8352
H62.03643.13731.00142.36551.71673.2994
H71.85492.27353.03150.96163.83523.2994

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 115.886 C1 N3 H6 118.334
C1 O4 H7 105.291 O2 C1 N3 125.818
O2 C1 O4 123.558 N3 C1 O4 110.599
H5 N3 H6 118.020
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability