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All results from a given calculation for CHOCHCHCH3 (2-Butenal)

using model chemistry: mPW1PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-231.188122
Energy at 298.15K-231.193963
Nuclear repulsion energy153.217915
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 mPW1PW91/6-31+G**
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' 3213 3058 4.86      
2 A' 3174 3021 23.02      
3 A' 3156 3004 0.96      
4 A' 3060 2912 11.45      
5 A' 2933 2791 95.91      
6 A' 1809 1721 366.00      
7 A' 1731 1647 53.66      
8 A' 1490 1418 23.23      
9 A' 1427 1359 2.75      
10 A' 1417 1349 6.30      
11 A' 1333 1269 3.32      
12 A' 1283 1221 0.64      
13 A' 1182 1125 64.22      
14 A' 1117 1063 14.60      
15 A' 949 903 29.06      
16 A' 546 520 9.16      
17 A' 462 440 2.65      
18 A' 209 199 7.17      
19 A" 3123 2972 7.40      
20 A" 1484 1412 11.86      
21 A" 1074 1022 2.25      
22 A" 1035 985 4.44      
23 A" 1009 960 43.58      
24 A" 799 760 0.04      
25 A" 298 284 9.37      
26 A" 199 190 0.49      
27 A" 129 123 1.54      

Unscaled Zero Point Vibrational Energy (zpe) 19819.2 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 18863.9 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 mPW1PW91/6-31+G**
ABC
1.10472 0.07284 0.06920

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.377 -0.498 0.000
C2 0.896 -0.657 0.000
C3 0.000 0.341 0.000
C4 -1.436 0.058 0.000
O5 -2.305 0.908 0.000
H6 -1.703 -1.020 0.000
H7 0.298 1.386 0.000
H8 0.519 -1.680 0.000
H9 2.674 0.552 0.000
H10 2.816 -0.985 0.877
H11 2.816 -0.985 -0.877

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 H6 H7 H8 H9 H10 H11
C11.48862.52023.85334.88794.11312.80582.20191.09141.09541.0954
C21.48861.34122.44003.56312.62492.12901.09112.14982.13572.1357
C32.52021.34121.46392.37352.18041.08702.08702.68253.23363.2336
C43.85332.44001.46391.21471.11132.18402.61694.14014.46534.4653
O54.88793.56312.37351.21472.01982.64613.83064.99175.52925.5292
H64.11312.62492.18041.11132.01983.12982.31834.65124.60344.6034
H72.80582.12901.08702.18402.64613.12983.07482.51873.56843.5684
H82.20191.09112.08702.61693.83062.31833.07483.10302.55502.5550
H91.09142.14982.68254.14014.99174.65122.51873.10301.77551.7755
H101.09542.13573.23364.46535.52924.60343.56842.55501.77551.7547
H111.09542.13573.23364.46535.52924.60343.56842.55501.77551.7547

picture of 2-Butenal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 125.816 C1 C2 H8 116.355
C2 C1 H9 111.948 C2 C1 H10 110.563
C2 C1 H11 110.563 C2 C3 C4 120.815
C2 C3 H7 122.169 C3 C2 H8 117.829
C3 C4 O5 124.516 C3 C4 H6 115.016
C4 C3 H7 117.015 O5 C4 H6 120.468
H9 C1 H10 108.568 H9 C1 H11 108.568
H10 C1 H11 106.445
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.740      
2 C 0.035      
3 C 0.103      
4 C -0.037      
5 O -0.395      
6 H 0.125      
7 H 0.179      
8 H 0.167      
9 H 0.184      
10 H 0.190      
11 H 0.190      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  3.760 -2.191 0.000 4.352
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.323 3.875 0.000
y 3.875 -29.995 0.000
z 0.000 0.000 -31.330
Traceless
 xyz
x -4.660 3.875 0.000
y 3.875 3.331 0.000
z 0.000 0.000 1.329
Polar
3z2-r22.658
x2-y2-5.327
xy3.875
xz0.000
yz0.000


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> 160.932
(<r2>)1/2 12.686