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

using model chemistry: QCISD(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 QCISD(T)/cc-pVDZ
 hartrees
Energy at 0K-244.546220
Energy at 298.15K 
HF Energy-243.845208
Nuclear repulsion energy122.871661
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(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' 3812 3633        
2 A' 3798 3620        
3 A' 3648 3477        
4 A' 1872 1785        
5 A' 1610 1535        
6 A' 1454 1385        
7 A' 1255 1196        
8 A' 1079 1028        
9 A' 963 918        
10 A' 584 557        
11 A' 485 463        
12 A" 781 744        
13 A" 593 565        
14 A" 478 455        
15 A" 378i 361i        

Unscaled Zero Point Vibrational Energy (zpe) 11016.3 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 10499.7 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 QCISD(T)/cc-pVDZ
ABC
0.38080 0.35989 0.18503

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(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 1.351 0.000
N3 1.135 -0.626 0.000
O4 -1.104 -0.674 0.000
H5 2.028 -0.152 0.000
H6 1.086 -1.635 0.000
H7 -1.848 -0.051 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21771.36551.36772.04782.07611.8576
O21.21772.30282.28342.56213.19392.2819
N31.36552.30282.23921.01071.01103.0382
O41.36772.28342.23923.17482.39190.9709
H52.04782.56211.01073.17481.75703.8776
H62.07613.19391.01102.39191.75703.3352
H71.85762.28193.03820.97093.87763.3352

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 118.274 C1 N3 H6 121.030
C1 O4 H7 103.888 O2 C1 N3 126.018
O2 C1 O4 123.959 N3 C1 O4 110.023
H5 N3 H6 120.696
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at QCISD(T)/cc-pVDZ
 hartrees
Energy at 0K-244.547212
Energy at 298.15K-244.552150
HF Energy-243.844970
Nuclear repulsion energy122.730301
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(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 3807 3628        
2 A 3721 3547        
3 A 3594 3425        
4 A 1873 1785        
5 A 1623 1547        
6 A 1452 1383        
7 A 1265 1205        
8 A 1110 1058        
9 A 963 917        
10 A 783 747        
11 A 591 563        
12 A 570 543        
13 A 514 490        
14 A 501 477        
15 A 430 410        

Unscaled Zero Point Vibrational Energy (zpe) 11398.0 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 10863.4 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(T)/cc-pVDZ
ABC
0.38079 0.35725 0.18513

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.045 0.126 -0.004
O2 -0.489 1.257 0.010
N3 1.290 -0.221 -0.082
O4 -0.820 -0.998 0.003
H5 1.915 0.523 0.214
H6 1.525 -1.145 0.270
H7 -1.730 -0.659 0.011

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.21591.38181.36542.01212.03811.8586
O21.21592.31502.28012.52213.14552.2830
N31.38182.31502.25071.01601.01653.0533
O41.36542.28012.25073.13732.36470.9713
H52.01212.52211.01603.13731.71413.8375
H62.03813.14551.01652.36471.71413.3012
H71.85862.28303.05330.97133.83753.3012

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 113.217 C1 N3 H6 115.543
C1 O4 H7 104.117 O2 C1 N3 125.931
O2 C1 O4 123.993 N3 C1 O4 110.027
H5 N3 H6 114.991
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability