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

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-303.577008
Energy at 298.15K-303.583509
HF Energy-302.975445
Nuclear repulsion energy223.789109
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 MP2/3-21G*
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 3279 3119 4.65      
2 A 3245 3087 0.42      
3 A 3221 3065 14.12      
4 A 3182 3027 2.42      
5 A 3177 3023 22.98      
6 A 3105 2954 19.01      
7 A 1713 1629 72.79      
8 A 1683 1601 12.88      
9 A 1601 1523 7.45      
10 A 1587 1509 5.88      
11 A 1525 1450 10.83      
12 A 1506 1432 34.59      
13 A 1361 1295 23.89      
14 A 1207 1149 450.72      
15 A 1204 1145 3.20      
16 A 1190 1132 0.33      
17 A 1122 1068 3.37      
18 A 1045 994 38.62      
19 A 1006 957 23.75      
20 A 987 939 11.43      
21 A 827 787 10.27      
22 A 816 777 31.14      
23 A 667 635 5.16      
24 A 531 505 0.11      
25 A 481 458 0.64      
26 A 330 314 21.11      
27 A 213 203 3.12      
28 A 199 189 7.00      
29 A 107 102 3.82      
30 A 85 81 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 21101.1 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 20073.4 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 MP2/3-21G*
ABC
0.32836 0.07557 0.06215

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -3.067 -0.892 -0.002
H2 -2.455 0.550 -0.888
H3 -2.455 0.548 0.889
C4 -2.345 -0.077 -0.000
O5 -1.021 -0.757 -0.001
O6 -0.060 1.352 0.001
C7 0.063 0.118 0.001
H8 1.249 -1.740 0.003
C9 1.337 -0.660 0.001
H10 3.462 -0.528 -0.001
H11 2.527 1.078 -0.003
C12 2.509 -0.009 -0.001

Atom - Atom Distances (Å)
  H1 H2 H3 C4 O5 O6 C7 H8 C9 H10 H11 C12
H11.79961.79961.08842.05023.75163.28794.39784.40936.53845.93045.6454
H21.79961.77741.09242.13382.67782.70444.44424.07786.07905.08765.0738
H31.79961.77741.09242.13372.67872.70454.44264.07756.07965.08965.0747
C41.08841.09241.09241.48872.69512.41533.95963.72745.82415.00714.8548
O52.05022.13382.13371.48872.31771.39252.47302.35954.48843.99453.6087
O63.75162.67782.67872.69512.31771.24013.35672.44843.99172.60142.9073
C73.28792.70442.70452.41531.39251.24012.20361.49243.45992.64512.4502
H84.39784.44424.44263.95962.47303.35672.20361.08362.52293.09382.1409
C94.40934.07784.07753.72742.35952.44841.49241.08362.12912.10611.3410
H106.53846.07906.07965.82414.48843.99173.45992.52292.12911.85791.0844
H115.93045.08765.08965.00713.99452.60142.64513.09382.10611.85791.0871
C125.64545.07385.07474.85483.60872.90732.45022.14091.34101.08441.0871

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 111.214 H1 C4 H3 111.214
H1 C4 O5 104.331 H2 C4 H3 108.889
H2 C4 O5 110.581 H3 C4 O5 110.572
C4 O5 C7 113.876 O5 C7 O6 123.272
O5 C7 C9 109.693 O6 C7 C9 127.035
C7 C9 H8 116.726 C7 C9 C12 119.612
H8 C9 C12 123.662 C9 C12 H10 122.410
C9 C12 H11 119.946 H10 C12 H11 117.644
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability