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All results from a given calculation for C4H6O2 (2-Propenoic acid, methyl ester)

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 C1 1A
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-306.404747
Energy at 298.15K-306.411385
Nuclear repulsion energy227.899211
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 3293 3134 1.47      
2 A 3236 3080 2.72      
3 A 3210 3055 12.97      
4 A 3192 3038 3.81      
5 A 3175 3022 15.83      
6 A 3089 2940 31.25      
7 A 1823 1735 222.60      
8 A 1723 1640 28.54      
9 A 1506 1433 9.28      
10 A 1493 1421 10.13      
11 A 1483 1412 42.24      
12 A 1443 1373 80.68      
13 A 1344 1280 130.57      
14 A 1257 1197 319.36      
15 A 1214 1155 20.31      
16 A 1182 1125 0.62      
17 A 1087 1035 3.94      
18 A 1059 1008 12.94      
19 A 1029 980 38.98      
20 A 1016 967 22.99      
21 A 885 842 11.49      
22 A 837 797 30.26      
23 A 674 641 5.22      
24 A 532 507 0.06      
25 A 478 455 1.56      
26 A 338 322 16.11      
27 A 221 210 5.06      
28 A 204 194 5.08      
29 A 136 130 0.20      
30 A 99 94 3.54      

Unscaled Zero Point Vibrational Energy (zpe) 21128.3 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 20109.9 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
0.34453 0.07781 0.06424

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 3.020 -0.899 -0.002
H2 2.413 0.533 0.889
H3 2.412 0.535 -0.887
C4 2.294 -0.089 0.000
O5 1.013 -0.720 0.000
O6 0.063 1.322 -0.000
C7 -0.042 0.114 -0.000
H8 -1.238 -1.727 -0.001
C9 -1.313 -0.645 -0.000
H10 -3.422 -0.554 0.000
H11 -2.520 1.074 0.001
C12 -2.485 -0.010 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 O5 O6 C7 H8 C9 H10 H11 C12
H11.79231.79241.08812.01513.69883.22554.33774.34036.45175.88105.5762
H21.79231.77661.09142.07822.63402.64424.38474.00726.00185.04135.0072
H31.79241.77661.09142.07822.63142.64284.38434.00626.00075.03965.0059
C41.08811.09141.09141.42772.64002.34463.89303.64915.73504.95224.7792
O52.01512.07822.07821.42772.25231.34512.46592.32694.43843.96243.5690
O63.69882.63402.63142.64002.25231.21213.31482.40013.95772.59422.8746
C73.22552.64422.64282.34461.34511.21212.19571.48043.44582.65732.4459
H84.33774.38474.38433.89302.46593.31482.19571.08462.47953.08092.1219
C94.34034.00724.00623.64912.32692.40011.48041.08462.11162.10091.3329
H106.45176.00186.00075.73504.43843.95773.44582.47952.11161.86191.0839
H115.88105.04135.03964.95223.96242.59422.65733.08092.10091.86191.0852
C125.57625.00725.00594.77923.56902.87462.44592.12191.33291.08391.0852

picture of 2-Propenoic acid, methyl ester state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C4 H2 110.640 H1 C4 H3 110.646
H1 C4 O5 105.654 H2 C4 H3 108.955
H2 C4 O5 110.463 H3 C4 O5 110.462
C4 O5 C7 115.435 O5 C7 O6 123.395
O5 C7 C9 110.794 O6 C7 C9 125.811
C7 C9 H8 116.907 C7 C9 C12 120.691
H8 C9 C12 122.402 C9 C12 H10 121.439
C9 C12 H11 120.295 H10 C12 H11 118.267
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.168      
2 H 0.181      
3 H 0.181      
4 C -0.216      
5 O -0.270      
6 O -0.479      
7 C 0.102      
8 H 0.178      
9 C 0.181      
10 H 0.170      
11 H 0.194      
12 C -0.390      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.089 -1.589 0.000 1.592
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.717 0.719 -0.001
y 0.719 -39.093 0.002
z -0.001 0.002 -36.549
Traceless
 xyz
x 12.104 0.719 -0.001
y 0.719 -7.960 0.002
z -0.001 0.002 -4.144
Polar
3z2-r2-8.288
x2-y213.376
xy0.719
xz-0.001
yz0.002


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> 176.809
(<r2>)1/2 13.297