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

using model chemistry: CCSD(T)/cc-pVDZ

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(T)/cc-pVDZ
 hartrees
Energy at 0K-244.545337
Energy at 298.15K 
HF Energy-243.845353
Nuclear repulsion energy122.918920
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(T)/cc-pVDZ
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' 3814 3734        
2 A' 3800 3719        
3 A' 3650 3572        
4 A' 1877 1837        
5 A' 1611 1577        
6 A' 1456 1425        
7 A' 1257 1230        
8 A' 1080 1057        
9 A' 966 945        
10 A' 586 573        
11 A' 486 476        
12 A" 782 766        
13 A" 593 580        
14 A" 478 468        
15 A" 377i 369i        

Unscaled Zero Point Vibrational Energy (zpe) 11028.6 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 10794.8 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(T)/cc-pVDZ
ABC
0.38124 0.36006 0.18517

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.134 0.000
O2 -0.047 1.350 0.000
N3 1.134 -0.626 0.000
O4 -1.104 -0.673 0.000
H5 2.027 -0.153 0.000
H6 1.085 -1.636 0.000
H7 -1.848 -0.049 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21701.36521.36692.04752.07561.8573
O21.21702.30192.28202.56123.19292.2812
N31.36522.30192.23861.01071.01093.0378
O41.36692.28202.23863.17412.39150.9708
H52.04752.56121.01073.17411.75693.8770
H62.07563.19291.01092.39151.75693.3348
H71.85732.28123.03780.97083.87703.3348

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 118.273 C1 N3 H6 121.024
C1 O4 H7 103.928 O2 C1 N3 126.009
O2 C1 O4 123.946 N3 C1 O4 110.044
H5 N3 H6 120.703
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at CCSD(T)/cc-pVDZ
 hartrees
Energy at 0K-244.546320
Energy at 298.15K-244.551261
HF Energy-243.845137
Nuclear repulsion energy122.780346
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(T)/cc-pVDZ
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 3809 3729        
2 A 3723 3644        
3 A 3596 3520        
4 A 1878 1838        
5 A 1624 1590        
6 A 1454 1423        
7 A 1266 1240        
8 A 1112 1089        
9 A 965 945        
10 A 785 768        
11 A 592 579        
12 A 570 558        
13 A 514 503        
14 A 501 491        
15 A 430 421        

Unscaled Zero Point Vibrational Energy (zpe) 11410.0 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 11168.1 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(T)/cc-pVDZ
ABC
0.38128 0.35742 0.18528

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pVDZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.044 0.125 -0.004
O2 -0.485 1.258 0.010
N3 1.289 -0.223 -0.082
O4 -0.823 -0.996 0.003
H5 1.916 0.519 0.215
H6 1.522 -1.148 0.268
H7 -1.732 -0.654 0.010

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21531.38101.36482.01132.03741.8589
O21.21532.31352.27872.52043.14432.2825
N31.38102.31352.25061.01591.01633.0533
O41.36482.27872.25063.13672.36480.9712
H52.01132.52041.01593.13671.71423.8372
H62.03743.14431.01632.36481.71423.3015
H71.85892.28253.05330.97123.83723.3015

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 113.210 C1 N3 H6 115.555
C1 O4 H7 104.184 O2 C1 N3 125.904
O2 C1 O4 123.953 N3 C1 O4 110.097
H5 N3 H6 115.018
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability