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All results from a given calculation for HOCH2CH2NH2 (monoethanolamine)

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

Conformer 2 (C1 OH out)

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

Conformer 3 (C1 OH in)

Jump to S1C1 S1C2
Energy calculated at CISD/6-31G
 hartrees
Energy at 0K-209.406305
Energy at 298.15K-209.415487
HF Energy-209.011514
Nuclear repulsion energy133.238492
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 CISD/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 3734 3502 4.38      
2 A 3722 3490 35.26      
3 A 3622 3397 0.68      
4 A 3177 2980 42.69      
5 A 3151 2955 29.88      
6 A 3068 2877 74.25      
7 A 3049 2859 55.95      
8 A 1780 1669 36.90      
9 A 1607 1507 0.36      
10 A 1590 1491 2.52      
11 A 1486 1394 24.12      
12 A 1483 1391 37.84      
13 A 1431 1342 19.72      
14 A 1387 1301 5.22      
15 A 1303 1222 25.45      
16 A 1223 1147 17.38      
17 A 1144 1073 12.53      
18 A 1074 1007 59.57      
19 A 1040 976 5.25      
20 A 935 877 35.64      
21 A 908 851 34.06      
22 A 781 732 234.75      
23 A 583 547 195.04      
24 A 542 509 30.40      
25 A 334 313 0.26      
26 A 266 250 10.17      
27 A 191 179 7.40      

Unscaled Zero Point Vibrational Energy (zpe) 22305.2 cm-1
Scaled (by 0.9378) Zero Point Vibrational Energy (zpe) 20917.8 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 CISD/6-31G
ABC
0.46627 0.18496 0.15082

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.381 -0.545 0.132
C2 -0.639 0.663 -0.279
C3 0.790 0.578 0.272
O4 1.418 -0.651 -0.166
H5 -1.690 -0.540 1.095
H6 -2.121 -0.825 -0.493
H7 -1.114 1.604 0.039
H8 -0.590 0.667 -1.372
H9 1.407 1.397 -0.103
H10 0.773 0.632 1.370
H11 0.753 -1.359 -0.088

Atom - Atom Distances (Å)
  N1 C2 C3 O4 H5 H6 H7 H8 H9 H10 H11
N11.47682.44822.81661.01101.00902.16812.08793.40612.74892.2942
C21.47681.53342.44332.10742.11151.10091.09422.18072.17102.4621
C32.44821.53341.44862.84183.32102.17502.14791.09171.09981.9708
O42.81662.44331.44863.35563.55863.39692.68712.04912.10340.9742
H51.01102.10742.84183.35561.67052.45892.95883.84432.74102.8349
H61.00902.11153.32103.55861.67052.68272.31154.18813.73782.9515
H72.16811.10092.17503.39692.45892.68271.77312.53372.50563.5044
H82.08791.09422.14792.68712.95882.31151.77312.47633.06242.7484
H93.40612.18071.09172.04913.84434.18812.53372.47631.77712.8324
H102.74892.17101.09982.10342.74103.73782.50563.06241.77712.4682
H112.29422.46211.97080.97422.83492.95153.50442.74842.83242.4682

picture of monoethanolamine state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 108.828 N1 C2 H7 113.713
N1 C2 H8 107.668 C2 N1 H5 114.495
C2 N1 H6 114.999 C2 C3 O4 110.008
C2 C3 H9 111.230 C2 C3 H10 109.984
C3 C2 H7 110.228 C3 C2 H8 108.502
C3 O4 H11 107.241 O4 C3 H9 106.688
O4 C3 H10 110.510 H5 N1 H6 111.581
H7 C2 H8 107.751 H9 C3 H10 108.364
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability