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All results from a given calculation for HOCH2CH2NH2 (monoethanolamine)

using model chemistry: MP2/3-21G

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 MP2/3-21G
Rotational Constants (cm-1) from geometry optimized at MP2/3-21G
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1 OH out)

Jump to S1C1 S1C3
Vibrational Frequencies calculated at MP2/3-21G
Rotational Constants (cm-1) from geometry optimized at MP2/3-21G
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C1 OH in)

Jump to S1C1 S1C2
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-208.347561
Energy at 298.15K-208.356887
HF Energy-207.937353
Nuclear repulsion energy133.248473
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 MP2/3-21G
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 3548 3386 0.90      
2 A 3443 3286 0.19      
3 A 3378 3224 53.04      
4 A 3156 3013 35.56      
5 A 3144 3001 28.47      
6 A 3058 2919 54.37      
7 A 3023 2885 66.94      
8 A 1752 1672 24.31      
9 A 1623 1549 0.42      
10 A 1589 1517 4.18      
11 A 1494 1426 112.88      
12 A 1453 1387 1.62      
13 A 1434 1368 4.84      
14 A 1370 1307 2.01      
15 A 1295 1236 22.39      
16 A 1215 1159 17.22      
17 A 1090 1041 1.71      
18 A 1035 988 40.25      
19 A 1022 975 6.63      
20 A 940 897 58.67      
21 A 870 831 13.52      
22 A 818 781 141.56      
23 A 706 674 145.87      
24 A 547 522 11.41      
25 A 340 324 1.53      
26 A 305 291 14.02      
27 A 208 199 9.56      

Unscaled Zero Point Vibrational Energy (zpe) 21926.5 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 20928.9 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 MP2/3-21G
ABC
0.44441 0.19418 0.15400

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.331 -0.568 0.130
C2 -0.632 0.702 -0.271
C3 0.813 0.587 0.265
O4 1.364 -0.695 -0.169
H5 -1.625 -0.536 1.109
H6 -2.136 -0.771 -0.465
H7 -1.119 1.622 0.080
H8 -0.593 0.714 -1.363
H9 1.442 1.383 -0.142
H10 0.795 0.682 1.362
H11 0.558 -1.289 -0.101

Atom - Atom Distances (Å)
  N1 C2 C3 O4 H5 H6 H7 H8 H9 H10 H11
N11.50332.43892.71401.02351.02152.20102.10183.40102.75712.0350
C21.50331.54572.43862.10312.11351.09911.09342.18712.16932.3255
C32.43891.54571.46182.81443.32772.19962.15531.09281.10171.9284
O42.71402.43861.46183.25483.51293.40572.69162.07992.13651.0028
H51.02352.10312.81443.25481.67202.44432.95713.82852.72152.6077
H61.02152.11353.32773.51291.67202.65702.32224.18853.74732.7673
H72.20101.09912.19963.40572.44432.65701.78472.58182.48853.3647
H82.10181.09342.15532.69162.95712.32221.78472.46573.05922.6328
H93.40102.18711.09282.07993.82854.18852.58182.46571.78142.8143
H102.75712.16931.10172.13652.72153.74732.48853.05921.78142.4662
H112.03502.32551.92841.00282.60772.76733.36472.63282.81432.4662

picture of monoethanolamine state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 106.236 N1 C2 H7 114.618
N1 C2 H8 107.025 C2 N1 H5 111.260
C2 N1 H6 112.265 C2 C3 O4 108.325
C2 C3 H9 110.804 C2 C3 H10 108.897
C3 C2 H7 111.427 C3 C2 H8 108.286
C3 O4 H11 101.336 O4 C3 H9 108.142
O4 C3 H10 112.147 H5 N1 H6 109.692
H7 C2 H8 108.986 H9 C3 H10 108.538
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability