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All results from a given calculation for CH3CH2OH (Ethanol)

using model chemistry: QCISD(T)/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD(T)/6-31G*
 hartrees
Energy at 0K-154.561934
Energy at 298.15K 
HF Energy-154.073775
Nuclear repulsion energy81.517310
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(T)/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' 3735 3583        
2 A' 3139 3012        
3 A' 3061 2936        
4 A' 2998 2876        
5 A' 1577 1512        
6 A' 1544 1481        
7 A' 1497 1436        
8 A' 1440 1381        
9 A' 1308 1255        
10 A' 1133 1087        
11 A' 1067 1024        
12 A' 923 886        
13 A' 420 403        
14 A" 3149 3021        
15 A" 3030 2907        
16 A" 1528 1466        
17 A" 1318 1264        
18 A" 1208 1159        
19 A" 835 801        
20 A" 305 293        
21 A" 257 246        

Unscaled Zero Point Vibrational Energy (zpe) 17735.6 cm-1
Scaled (by 0.9593) Zero Point Vibrational Energy (zpe) 17013.8 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 QCISD(T)/6-31G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.173 -0.404 0.000
C2 0.000 0.561 0.000
O3 -1.195 -0.227 0.000
H4 2.125 0.143 0.000
H5 1.133 -1.044 0.890
H6 1.133 -1.044 -0.890
H7 0.043 1.213 0.891
H8 0.043 1.213 -0.891
H9 -1.952 0.385 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 H7 H8 H9
C11.51862.37401.09831.09681.09682.16402.16403.2221
C21.51861.43142.16572.15672.15671.10421.10421.9597
O32.37401.43143.34042.62252.62252.09692.09690.9729
H41.09832.16573.34041.78471.78472.50462.50464.0838
H51.09682.15672.62251.78471.77942.50623.07413.5137
H61.09682.15672.62251.78471.77943.07412.50623.5137
H72.16401.10422.09692.50462.50623.07411.78112.3358
H82.16401.10422.09692.50463.07412.50621.78112.3358
H93.22211.95970.97294.08383.51373.51372.33582.3358

picture of Ethanol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 107.137 C1 C2 H8 110.190
C1 C2 H9 135.371 C2 C1 H5 110.056
C2 C1 H6 110.056 C2 C1 H7 28.614
C2 O3 H4 27.047 O3 C2 H8 110.919
O3 C2 H9 28.234 H5 C1 H6 108.422
H5 C1 H7 94.777 H6 C1 H7 138.669
H8 C2 H9 95.257
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability