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All results from a given calculation for CH3CH2COOH (Propanoic Acid)

using model chemistry: CCD/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 CCD/3-21G*
 hartrees
Energy at 0K-265.891270
Energy at 298.15K-265.898446
HF Energy-265.353103
Nuclear repulsion energy176.105800
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 CCD/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' 3538 3384 10.18      
2 A' 3124 2988 18.82      
3 A' 3066 2933 6.11      
4 A' 3057 2924 14.82      
5 A' 1820 1741 143.37      
6 A' 1580 1511 8.05      
7 A' 1551 1483 16.72      
8 A' 1490 1426 10.48      
9 A' 1437 1375 39.67      
10 A' 1371 1311 0.43      
11 A' 1158 1107 166.24      
12 A' 1092 1045 138.42      
13 A' 1007 963 8.81      
14 A' 807 772 8.12      
15 A' 620 593 18.99      
16 A' 465 445 28.49      
17 A' 254 243 2.05      
18 A" 3129 2993 22.13      
19 A" 3097 2962 1.07      
20 A" 1580 1511 6.23      
21 A" 1332 1274 0.08      
22 A" 1168 1117 0.16      
23 A" 847 810 14.00      
24 A" 638 610 126.99      
25 A" 529 506 38.84      
26 A" 200 191 0.00      
27 A" 67 64 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 20010.9 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 19140.4 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 CCD/3-21G*
ABC
0.32649 0.12586 0.09404

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.564 0.000
C2 -0.615 -0.826 0.000
C3 0.483 -1.915 0.000
O4 -0.994 1.535 0.000
O5 1.195 0.838 0.000
H6 -1.263 -0.908 0.884
H7 -1.263 -0.908 -0.884
H8 0.031 -2.915 0.000
H9 1.120 -1.812 -0.887
H10 1.120 -1.812 0.887
H11 -0.558 2.428 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.51952.52481.39011.22562.13122.13123.47832.77202.77201.9459
C21.51951.54612.39162.45811.09911.09912.18612.18382.18383.2542
C32.52481.54613.75292.84302.20102.20101.09751.09711.09714.4654
O41.39012.39163.75292.29702.61202.61204.56644.05714.05710.9929
O51.22562.45812.84302.29703.14163.14163.92882.79522.79522.3665
H62.13121.09912.20102.61203.14161.76722.54603.10382.54913.5218
H72.13121.09912.20102.61203.14161.76722.54602.54913.10383.5218
H83.47832.18611.09754.56643.92882.54602.54601.78621.78625.3746
H92.77202.18381.09714.05712.79523.10382.54911.78621.77434.6452
H102.77202.18381.09714.05712.79522.54913.10381.78621.77434.6452
H111.94593.25424.46540.99292.36653.52183.52185.37464.64524.6452

picture of Propanoic Acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 110.890 C1 C2 H6 107.868
C1 C2 H7 107.868 C1 O4 H11 108.338
C2 C1 O4 110.487 C2 C1 O5 126.799
C2 C3 H8 110.416 C2 C3 H9 110.265
C2 C3 H10 110.265 C3 C2 H6 111.503
C3 C2 H7 111.503 O4 C1 O5 122.714
H6 C2 H7 107.017 H8 C3 H9 108.954
H8 C3 H10 108.954 H9 C3 H10 107.930
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability