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All results from a given calculation for HOCH2CH2NH2 (monoethanolamine)

using model chemistry: MP4/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 3 yes C1 OH in 1A

Conformer 1 (CS)

Jump to S1C2 S1C3
Vibrational Frequencies calculated at MP4/6-311G**
Rotational Constants (cm-1) from geometry optimized at MP4/6-311G**
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-311G**
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1 OH out)

Jump to S1C1 S1C3
Vibrational Frequencies calculated at MP4/6-311G**
Rotational Constants (cm-1) from geometry optimized at MP4/6-311G**
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-311G**
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C1 OH in)

Jump to S1C1 S1C2
Energy calculated at MP4/6-311G**
 hartrees
Energy at 0K-209.919799
Energy at 298.15K-209.929031
HF Energy-209.165082
Nuclear repulsion energy134.474752
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 MP4/6-311G**
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 3783 3668        
2 A 3601 3492        
3 A 3508 3402        
4 A 3103 3009        
5 A 3094 3000        
6 A 3007 2916        
7 A 2974 2884        
8 A 1649 1599        
9 A 1530 1484        
10 A 1509 1463        
11 A 1479 1435        
12 A 1426 1383        
13 A 1398 1355        
14 A 1338 1298        
15 A 1269 1231        
16 A 1207 1170        
17 A 1127 1092        
18 A 1078 1045        
19 A 1021 990        
20 A 961 932        
21 A 896 869        
22 A 853 827        
23 A 605 587        
24 A 543 527        
25 A 333 323        
26 A 267 259        
27 A 198 192        

Unscaled Zero Point Vibrational Energy (zpe) 21878.5 cm-1
Scaled (by 0.9697) Zero Point Vibrational Energy (zpe) 21215.6 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 MP4/6-311G**
ABC
0.47765 0.18890 0.15454

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-311G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.353 -0.568 0.122
C2 -0.631 0.656 -0.278
C3 0.791 0.557 0.274
O4 1.402 -0.641 -0.172
H5 -1.649 -0.484 1.093
H6 -2.200 -0.671 -0.430
H7 -1.110 1.593 0.055
H8 -0.575 0.666 -1.373
H9 1.400 1.398 -0.078
H10 0.755 0.601 1.379
H11 0.685 -1.286 -0.099

Atom - Atom Distances (Å)
  N1 C2 C3 O4 H5 H6 H7 H8 H9 H10 H11
N11.47632.42602.77171.01811.01592.17492.08913.38902.71852.1727
C21.47631.52892.41392.05272.06051.10311.09712.17182.16092.3532
C32.42601.52891.41672.77573.30892.17602.14301.09661.10611.8831
O42.77172.41391.41673.30603.61113.36892.65662.04062.08980.9668
H51.01812.05272.77573.30601.62992.38282.92533.76932.65262.7404
H61.01592.06053.30893.61111.62992.55852.30634.16723.69062.9687
H72.17491.10312.17603.36892.38282.55851.78502.52172.49273.3960
H82.08911.09712.14302.65662.92532.30631.78502.47283.05752.6501
H93.38902.17181.09662.04063.76934.16722.52172.47281.78162.7772
H102.71852.16091.10612.08982.65263.69062.49273.05751.78162.3977
H112.17272.35321.88310.96682.74042.96873.39602.65012.77722.3977

picture of monoethanolamine state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 107.648 N1 C2 H7 114.173
N1 C2 H8 107.632 C2 N1 H5 109.385
C2 N1 H6 110.168 C2 C3 O4 110.011
C2 C3 H9 110.547 C2 C3 H10 109.133
C3 C2 H7 110.490 C3 C2 H8 108.268
C3 O4 H11 102.741 O4 C3 H9 107.891
O4 C3 H10 111.268 H5 N1 H6 106.518
H7 C2 H8 108.450 H9 C3 H10 107.968
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability