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All results from a given calculation for CH3CH2CHO (Propanal)

using model chemistry: PBE1PBE/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBE1PBE/3-21G*
 hartrees
Energy at 0K-191.854113
Energy at 298.15K-191.860499
HF Energy-191.854113
Nuclear repulsion energy118.346095
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 PBE1PBE/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' 3167 3040 13.29      
2 A' 3087 2963 12.08      
3 A' 3053 2930 16.88      
4 A' 2936 2818 127.58      
5 A' 1769 1698 77.73      
6 A' 1560 1497 10.36      
7 A' 1499 1439 24.43      
8 A' 1468 1409 18.28      
9 A' 1443 1385 4.43      
10 A' 1369 1314 14.96      
11 A' 1130 1085 21.14      
12 A' 1035 993 0.72      
13 A' 870 835 21.93      
14 A' 692 664 2.80      
15 A' 273 262 10.83      
16 A" 3165 3037 13.85      
17 A" 3085 2961 3.80      
18 A" 1560 1498 10.88      
19 A" 1320 1267 0.15      
20 A" 1174 1127 1.11      
21 A" 941 903 2.53      
22 A" 701 673 9.57      
23 A" 242 232 0.45      
24 A" 123 118 1.21      

Unscaled Zero Point Vibrational Energy (zpe) 18831.0 cm-1
Scaled (by 0.9598) Zero Point Vibrational Energy (zpe) 18074.0 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 PBE1PBE/3-21G*
ABC
0.53818 0.20217 0.15544

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.436 0.416 0.000
C2 0.000 0.938 0.000
C3 -0.998 -0.193 0.000
O4 -0.692 -1.383 0.000
H5 2.155 1.240 0.000
H6 1.610 -0.208 0.882
H7 1.610 -0.208 -0.882
H8 -0.202 1.568 0.880
H9 -0.202 1.568 -0.880
H10 -2.056 0.136 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 H5 H6 H7 H8 H9 H10
C11.52762.50912.78611.09421.09461.09462.18732.18733.5031
C21.52761.50862.42142.17642.16442.16441.10121.10122.2070
C32.50911.50861.22833.46412.75412.75412.12392.12391.1078
O42.78612.42141.22833.87132.73152.73153.11803.11802.0412
H51.09422.17643.46413.87131.78101.78102.53762.53764.3538
H61.09462.16442.75412.73151.78101.76452.53783.08963.7870
H71.09462.16442.75412.73151.78101.76453.08962.53783.7870
H82.18731.10122.12393.11802.53762.53783.08961.75972.5027
H92.18731.10122.12393.11802.53763.08962.53781.75972.5027
H103.50312.20701.10782.04124.35383.78703.78702.50272.5027

picture of Propanal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 111.463 C1 C2 H8 111.599
C1 C2 H9 111.599 C2 C1 H5 111.149
C2 C1 H6 110.173 C2 C1 H7 110.173
C2 C3 O4 124.124 C2 C3 H10 114.159
C3 C2 H8 107.925 C3 C2 H9 107.925
O4 C3 H10 121.718 H5 C1 H6 108.918
H5 C1 H7 108.918 H6 C1 H7 107.420
H8 C2 H9 106.077
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.620      
2 C -0.581      
3 C 0.260      
4 O -0.423      
5 H 0.216      
6 H 0.234      
7 H 0.234      
8 H 0.249      
9 H 0.249      
10 H 0.183      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.136 2.487 0.000 2.491
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.870 -1.592 0.000
y -1.592 -28.050 0.000
z 0.000 0.000 -24.173
Traceless
 xyz
x 2.241 -1.592 0.000
y -1.592 -4.028 0.000
z 0.000 0.000 1.787
Polar
3z2-r23.574
x2-y24.179
xy-1.592
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.994 -0.042 0.000
y -0.042 5.241 0.000
z 0.000 0.000 3.594


<r2> (average value of r2) Å2
<r2> 83.663
(<r2>)1/2 9.147