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 C3H4O2 (propenalol)

using model chemistry: MP2/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 MP2/CEP-31G
 hartrees
Energy at 0K-50.480388
Energy at 298.15K-50.485236
HF Energy-50.023950
Nuclear repulsion energy85.594660
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 MP2/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' 3434 3318 63.56      
2 A' 3244 3135 29.75      
3 A' 3213 3105 2.98      
4 A' 3068 2965 116.77      
5 A' 1618 1564 266.97      
6 A' 1546 1494 99.02      
7 A' 1432 1384 35.83      
8 A' 1370 1324 5.16      
9 A' 1369 1323 39.95      
10 A' 1227 1185 146.43      
11 A' 1069 1033 55.96      
12 A' 945 913 94.41      
13 A' 854 826 9.16      
14 A' 465 449 22.32      
15 A' 251 242 3.74      
16 A" 955 923 15.90      
17 A" 924 893 36.85      
18 A" 788 762 226.93      
19 A" 754 729 9.49      
20 A" 396 383 3.89      
21 A" 244 236 4.27      

Unscaled Zero Point Vibrational Energy (zpe) 14582.6 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 14091.2 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 MP2/CEP-31G
ABC
0.30320 0.15547 0.10277

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.137 0.000
C2 1.295 0.398 0.000
C3 -1.227 0.450 0.000
O4 1.372 -0.900 0.000
O5 -1.368 -0.937 0.000
H6 -0.474 -1.388 0.000
H7 0.001 2.234 0.000
H8 2.235 0.992 0.000
H9 -2.202 0.954 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.49091.40652.45582.48472.56891.09712.23992.2096
C21.49092.52321.30062.97952.51422.24581.11203.5411
C31.40652.52322.92911.39441.98642.16593.50491.0972
O42.45581.30062.92912.74051.90953.42062.07994.0264
O52.48472.97951.39442.74051.00133.45414.08762.0670
H62.56892.51421.98641.90951.00133.65283.60642.9106
H71.09712.24582.16593.42063.45413.65282.55602.5478
H82.23991.11203.50492.07994.08763.60642.55604.4375
H92.20963.54111.09724.02642.06702.91062.54784.4375

picture of propenalol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O4 123.077 C1 C2 H8 118.027
C1 C3 O5 125.020 C1 C3 H9 123.424
C2 C1 C3 121.085 C2 C1 H7 119.633
C3 C1 H7 119.281 C3 O5 H6 110.958
O4 C2 H8 118.896 O5 C3 H9 111.556
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.111      
2 C -0.039      
3 C -0.057      
4 O -0.393      
5 O -0.510      
6 H 0.477      
7 H 0.267      
8 H 0.159      
9 H 0.205      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000