return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3CH2CHO (Propanal)

using model chemistry: HF/CEP-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 HF/CEP-31G
 hartrees
Energy at 0K-35.552019
Energy at 298.15K-35.558507
HF Energy-35.552019
Nuclear repulsion energy66.329577
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 HF/CEP-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' 3304 2978 67.35 67.66 0.75 0.86
2 A' 3236 2917 85.80 272.14 0.02 0.05
3 A' 3222 2904 122.47 88.19 0.18 0.30
4 A' 3202 2887 10.62 77.12 0.53 0.70
5 A' 1868 1684 164.68 12.25 0.30 0.47
6 A' 1636 1475 9.86 8.51 0.75 0.86
7 A' 1611 1452 14.88 20.93 0.74 0.85
8 A' 1569 1414 7.41 4.06 0.20 0.33
9 A' 1526 1376 7.28 6.99 0.69 0.82
10 A' 1506 1358 14.25 3.95 0.40 0.58
11 A' 1212 1093 17.21 8.06 0.49 0.65
12 A' 1107 998 2.51 6.98 0.73 0.85
13 A' 921 830 10.52 17.89 0.18 0.30
14 A' 709 639 15.51 3.22 0.75 0.86
15 A' 272 246 12.78 1.02 0.56 0.72
16 A" 3318 2991 78.88 35.28 0.75 0.86
17 A" 3250 2929 32.72 103.33 0.75 0.86
18 A" 1629 1469 7.85 18.72 0.75 0.86
19 A" 1395 1257 1.37 15.38 0.75 0.86
20 A" 1259 1135 0.99 1.08 0.75 0.86
21 A" 984 887 2.03 2.11 0.75 0.86
22 A" 757 682 5.39 2.09 0.75 0.86
23 A" 236 213 1.14 0.54 0.75 0.86
24 A" 130 118 8.24 0.94 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 19929.4 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 17964.4 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 HF/CEP-31G
ABC
0.54862 0.19281 0.15053

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.467 0.454 0.000
C2 0.000 0.927 0.000
C3 -1.011 -0.209 0.000
O4 -0.719 -1.403 0.000
H5 2.139 1.312 0.000
H6 1.681 -0.153 0.877
H7 1.681 -0.153 -0.877
H8 -0.210 1.550 0.872
H9 -0.210 1.550 -0.872
H10 -2.065 0.084 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8 H9 H10
C11.54102.56522.86801.08981.08831.08832.18502.18503.5513
C21.54101.52062.43752.17322.18162.18161.09261.09262.2303
C32.56521.52061.22853.49802.83152.83152.12092.12091.0942
O42.86802.43751.22853.94162.84412.84413.12083.12082.0055
H51.08982.17323.49803.94161.76831.76832.51672.51674.3796
H61.08832.18162.83152.84411.76831.75502.54483.08813.8543
H71.08832.18162.83152.84411.76831.75503.08812.54483.8543
H82.18501.09262.12093.12082.51672.54483.08811.74382.5202
H92.18501.09262.12093.12082.51673.08812.54481.74382.5202
H103.55132.23031.09422.00554.37963.85433.85432.52022.5202

picture of Propanal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 113.827 C1 C2 H8 110.982
C1 C2 H9 110.982 C2 C1 H5 110.215
C2 C1 H6 110.970 C2 C1 H7 110.970
C2 C3 O4 124.573 C2 C3 H10 116.123
C3 C2 H8 107.380 C3 C2 H9 107.380
O4 C3 H10 119.305 H5 C1 H6 108.558
H5 C1 H7 108.558 H6 C1 H7 107.476
H8 C2 H9 105.886
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.353      
2 C -0.028      
3 C -0.091      
4 O -0.234      
5 H 0.119      
6 H 0.120      
7 H 0.120      
8 H 0.101      
9 H 0.101      
10 H 0.145      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.354 3.602 0.000 3.620
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.440 -2.300 0.000
y -2.300 -30.507 0.000
z 0.000 0.000 -24.324
Traceless
 xyz
x 3.975 -2.300 0.000
y -2.300 -6.624 0.000
z 0.000 0.000 2.649
Polar
3z2-r25.298
x2-y27.066
xy-2.300
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.805 -0.106 0.000
y -0.106 5.422 0.000
z 0.000 0.000 3.652


<r2> (average value of r2) Å2
<r2> 72.548
(<r2>)1/2 8.518