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

using model chemistry: QCISD/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-311G*
 hartrees
Energy at 0K-267.737814
Energy at 298.15K-267.745040
HF Energy-266.906434
Nuclear repulsion energy178.218897
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 QCISD/6-311G*
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' 3798 3637 38.04      
2 A' 3131 2997 24.95      
3 A' 3061 2931 7.31      
4 A' 3055 2925 24.82      
5 A' 1862 1783 260.89      
6 A' 1532 1466 15.27      
7 A' 1504 1440 11.62      
8 A' 1465 1403 11.37      
9 A' 1447 1385 51.35      
10 A' 1354 1297 3.89      
11 A' 1214 1162 269.39      
12 A' 1115 1067 41.09      
13 A' 1032 988 2.03      
14 A' 838 802 9.26      
15 A' 627 600 23.96      
16 A' 475 455 21.83      
17 A' 257 246 2.32      
18 A" 3138 3005 26.87      
19 A" 3096 2964 4.14      
20 A" 1526 1461 8.18      
21 A" 1308 1252 0.04      
22 A" 1139 1091 0.51      
23 A" 827 792 19.01      
24 A" 676 648 111.85      
25 A" 528 505 25.60      
26 A" 222 213 0.00      
27 A" 51 49 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 20138.8 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 19280.9 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 QCISD/6-311G*
ABC
0.33839 0.12726 0.09575

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.573 0.000
C2 -0.602 -0.815 0.000
C3 0.457 -1.914 0.000
O4 -0.962 1.525 0.000
O5 1.176 0.838 0.000
H6 -1.261 -0.888 0.875
H7 -1.261 -0.888 -0.875
H8 -0.017 -2.901 0.000
H9 1.100 -1.838 -0.883
H10 1.100 -1.838 0.883
H11 -0.508 2.377 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.51232.52791.35351.20572.11842.11843.47402.79272.79271.8750
C21.51231.52632.36742.42781.09781.09782.16722.17312.17313.1934
C32.52791.52633.72002.84422.18402.18401.09551.09451.09454.3983
O41.35352.36743.72002.24532.58402.58404.52624.04214.04210.9651
O51.20572.42782.84422.24533.11163.11163.92522.81902.81902.2818
H62.11841.09782.18402.58403.11161.75052.52353.09282.54463.4630
H72.11841.09782.18402.58403.11161.75052.52352.54463.09283.4630
H83.47402.16721.09554.52623.92522.52352.52351.77671.77675.3015
H92.79272.17311.09454.04212.81903.09282.54461.77671.76534.5972
H102.79272.17311.09454.04212.81902.54463.09281.77671.76534.5972
H111.87503.19344.39830.96512.28183.46303.46305.30154.59724.5972

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 112.594 C1 C2 H6 107.444
C1 C2 H7 107.444 C1 O4 H11 106.730
C2 C1 O4 111.272 C2 C1 O5 126.185
C2 C3 H8 110.419 C2 C3 H9 110.960
C2 C3 H10 110.960 C3 C2 H6 111.625
C3 C2 H7 111.625 O4 C1 O5 122.543
H6 C2 H7 105.743 H8 C3 H9 108.446
H8 C3 H10 108.446 H9 C3 H10 107.505
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability