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=FULL/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 MP2=FULL/3-21G
 hartrees
Energy at 0K-264.666384
Energy at 298.15K-264.671627
HF Energy-264.142914
Nuclear repulsion energy162.576837
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=FULL/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' 3271 3123 1.54      
2 A' 3233 3087 4.79      
3 A' 3058 2920 74.93      
4 A' 3037 2900 125.56      
5 A' 1653 1578 261.72      
6 A' 1612 1539 17.69      
7 A' 1485 1418 54.64      
8 A' 1437 1372 5.49      
9 A' 1417 1353 71.00      
10 A' 1298 1239 120.79      
11 A' 1108 1058 45.10      
12 A' 977 933 76.18      
13 A' 910 869 0.62      
14 A' 519 496 15.80      
15 A' 321 306 2.89      
16 A" 1063 1015 25.05      
17 A" 1029 982 31.09      
18 A" 954 911 139.07      
19 A" 791 755 37.67      
20 A" 428 409 10.04      
21 A" 305 292 1.71      

Unscaled Zero Point Vibrational Energy (zpe) 14953.2 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 14277.3 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=FULL/3-21G
ABC
0.31283 0.16990 0.11010

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.124 0.000
C2 1.244 0.376 0.000
C3 -1.187 0.448 0.000
O4 1.299 -0.902 0.000
O5 -1.304 -0.912 0.000
H6 -0.354 -1.287 0.000
H7 0.018 2.206 0.000
H8 2.176 0.955 0.000
H9 -2.149 0.950 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9
C11.45181.36592.40702.41782.43731.08162.18302.1558
C21.45182.43231.27912.85482.30662.20281.09743.4410
C31.36592.43232.82951.36561.92542.13033.40141.0844
O42.40701.27912.82952.60291.69773.36162.05373.9138
O52.41782.85481.36562.60291.02103.38613.94922.0446
H62.43732.30661.92541.69771.02103.51263.38102.8679
H71.08162.20282.13033.36163.38613.51262.49502.5040
H82.18301.09743.40142.05373.94923.38102.49504.3251
H92.15583.44101.08443.91382.04462.86792.50404.3251

picture of propenalol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O4 123.494 C1 C2 H8 117.132
C1 C3 O5 124.539 C1 C3 H9 122.829
C2 C1 C3 119.333 C2 C1 H7 120.094
C3 C1 H7 120.574 C3 O5 H6 106.667
O4 C2 H8 119.374 O5 C3 H9 112.632
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2=FULL/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.550      
2 C 0.359      
3 C 0.296      
4 O -0.618      
5 O -0.704      
6 H 0.455      
7 H 0.252      
8 H 0.234      
9 H 0.277      


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> 103.932
(<r2>)1/2 10.195