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

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
1 2 no C1 1A

Conformer 1 (CS)

Jump to S1C2
Energy calculated at CBS-Q
 hartrees
Energy at 0K-244.826427
Energy at 298.15K-244.821708
HF Energy-243.818178
Nuclear repulsion energy125.416600
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 CBS-Q
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' 4103 4103 118.73      
2 A' 4008 4008 85.57      
3 A' 3876 3876 70.45      
4 A' 2014 2014 717.11      
5 A' 1796 1796 158.43      
6 A' 1580 1580 193.89      
7 A' 1374 1374 234.66      
8 A' 1194 1194 46.96      
9 A' 1064 1064 20.71      
10 A' 649 649 49.33      
11 A' 532 532 6.68      
12 A" 890 890 99.29      
13 A" 639 639 88.38      
14 A" 552 552 76.86      
15 A" 40i 40i 337.24      

Unscaled Zero Point Vibrational Energy (zpe) 12115.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12115.6 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 CBS-Q
ABC
0.38325 0.36154 0.18640

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.127 0.000
O2 -0.046 1.316 0.000
N3 1.120 -0.618 0.000
O4 -1.088 -0.642 0.000
H5 1.995 -0.152 0.000
H6 1.076 -1.607 0.000
H7 -1.844 -0.075 0.000

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.19021.34541.33212.01422.04101.8555
O21.19022.25862.21812.51413.13152.2738
N31.34542.25862.20850.99040.99063.0143
O41.33212.21812.20853.12122.36960.9454
H52.01422.51410.99043.12121.72083.8400
H62.04103.13150.99062.36961.72083.2982
H71.85552.27383.01430.94543.84003.2982

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 118.353 C1 N3 H6 121.039
C1 O4 H7 107.911 O2 C1 N3 125.817
O2 C1 O4 123.038 N3 C1 O4 111.145
H5 N3 H6 120.608
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at CBS-Q
 hartrees
Energy at 0K-244.826321
Energy at 298.15K-244.831130
HF Energy-243.818178
Nuclear repulsion energy125.405512
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 CBS-Q
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 4099 4099 118.85      
2 A 4007 4007 85.29      
3 A 3875 3875 70.25      
4 A 2014 2014 716.28      
5 A 1796 1796 157.53      
6 A 1580 1580 193.62      
7 A 1375 1375 235.06      
8 A 1194 1194 47.42      
9 A 1063 1063 20.77      
10 A 890 890 99.86      
11 A 650 650 50.01      
12 A 640 640 91.27      
13 A 554 554 72.41      
14 A 532 532 7.26      
15 A 52 52 337.61      

Unscaled Zero Point Vibrational Energy (zpe) 12160.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12160.7 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 CBS-Q
ABC
0.38329 0.36153 0.18640

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.041 0.120 -0.003
O2 -0.465 1.232 0.005
N3 1.261 -0.226 -0.031
O4 -0.825 -0.956 0.002
H5 1.933 0.493 0.082
H6 1.532 -1.171 0.099
H7 -1.723 -0.662 0.003

Atom - Atom Distances (Å)
  C1 O2 N3 O4 H5 H6 H7
C11.18991.34721.33182.01072.03721.8553
O21.18992.25972.21752.51063.12572.2734
N31.34722.25972.21000.99120.99143.0159
O41.33182.21752.21003.11672.36840.9454
H52.01072.51060.99123.11671.71193.8353
H62.03723.12570.99142.36841.71193.2960
H71.85532.27343.01590.94543.83533.2960

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 117.792 C1 N3 H6 120.421
C1 O4 H7 107.920 O2 C1 N3 125.800
O2 C1 O4 123.032 N3 C1 O4 111.166
H5 N3 H6 119.418
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability