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All results from a given calculation for HOCH2CH2NH2 (monoethanolamine)

using model chemistry: QCISD/6-31G**

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 QCISD/6-31G**
Rotational Constants (cm-1) from geometry optimized at QCISD/6-31G**
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G**
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1 OH out)

Jump to S1C1 S1C3
Vibrational Frequencies calculated at QCISD/6-31G**
Rotational Constants (cm-1) from geometry optimized at QCISD/6-31G**
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G**
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C1 OH in)

Jump to S1C1 S1C2
Energy calculated at QCISD/6-31G**
 hartrees
Energy at 0K-209.808333
Energy at 298.15K-209.817562
HF Energy-209.117502
Nuclear repulsion energy134.588944
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/6-31G**
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 3835 3611 53.01      
2 A 3664 3449 0.57      
3 A 3570 3360 0.22      
4 A 3163 2978 47.60      
5 A 3154 2969 32.03      
6 A 3065 2885 70.24      
7 A 3036 2858 69.17      
8 A 1707 1607 30.36      
9 A 1576 1484 0.22      
10 A 1557 1466 3.02      
11 A 1493 1406 72.44      
12 A 1454 1369 25.47      
13 A 1420 1337 6.79      
14 A 1366 1286 2.42      
15 A 1294 1218 23.86      
16 A 1220 1149 9.65      
17 A 1148 1081 48.50      
18 A 1097 1033 30.95      
19 A 1041 980 17.43      
20 A 976 919 68.34      
21 A 909 856 14.62      
22 A 864 813 75.10      
23 A 569 536 125.04      
24 A 537 506 38.14      
25 A 337 317 0.54      
26 A 276 259 14.59      
27 A 199 187 5.78      

Unscaled Zero Point Vibrational Energy (zpe) 22263.4 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 20958.7 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/6-31G**
ABC
0.48226 0.18779 0.15415

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.358 -0.567 0.121
C2 -0.634 0.649 -0.278
C3 0.783 0.557 0.275
O4 1.412 -0.631 -0.172
H5 -1.652 -0.488 1.089
H6 -2.203 -0.673 -0.427
H7 -1.110 1.583 0.048
H8 -0.580 0.663 -1.368
H9 1.385 1.399 -0.069
H10 0.748 0.601 1.373
H11 0.724 -1.307 -0.099

Atom - Atom Distances (Å)
  N1 C2 C3 O4 H5 H6 H7 H8 H9 H10 H11
N11.47082.42292.78641.01491.01292.16562.08223.38052.71412.2203
C21.47081.52392.41602.04952.05741.09751.09132.16412.15392.3878
C32.42291.52391.41592.77203.30492.16522.13731.09121.10021.9012
O42.78642.41601.41593.31653.62483.36302.65972.03232.08460.9674
H51.01492.04952.77203.31651.62392.38082.91773.75882.65032.7795
H61.01292.05743.30493.62481.62392.55142.30334.15923.68393.0130
H72.16561.09752.16523.36302.38082.55141.76982.50482.48433.4255
H82.08221.09132.13732.65972.91772.30331.76982.46813.04672.6815
H93.38052.16411.09122.03233.75884.15922.50482.46811.76792.7853
H102.71412.15391.10022.08462.65033.68392.48433.04671.76792.4096
H112.22032.38781.90120.96742.77953.01303.42552.68152.78532.4096

picture of monoethanolamine state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 107.994 N1 C2 H7 114.170
N1 C2 H8 107.803 C2 N1 H5 109.710
C2 N1 H6 110.505 C2 C3 O4 110.480
C2 C3 H9 110.608 C2 C3 H10 109.267
C3 C2 H7 110.312 C3 C2 H8 108.492
C3 O4 H11 104.237 O4 C3 H9 107.610
O4 C3 H10 111.273 H5 N1 H6 106.410
H7 C2 H8 107.915 H9 C3 H10 107.556
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability