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

using model chemistry: MP4/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/6-31G*
 hartrees
Energy at 0K-267.645758
Energy at 298.15K-267.652930
HF Energy-266.841384
Nuclear repulsion energy177.295910
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 MP4/6-31G*
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' 3672 3506        
2 A' 3156 3013        
3 A' 3075 2936        
4 A' 3067 2928        
5 A' 1811 1729        
6 A' 1546 1476        
7 A' 1517 1448        
8 A' 1466 1399        
9 A' 1443 1378        
10 A' 1334 1273        
11 A' 1186 1133        
12 A' 1109 1059        
13 A' 1032 986        
14 A' 826 789        
15 A' 608 580        
16 A' 467 445        
17 A' 254 242        
18 A" 3164 3021        
19 A" 3107 2966        
20 A" 1541 1471        
21 A" 1307 1248        
22 A" 1136 1084        
23 A" 826 789        
24 A" 673 643        
25 A" 520 496        
26 A" 217 207        
27 A" 59 57        

Unscaled Zero Point Vibrational Energy (zpe) 20057.4 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 19150.9 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 MP4/6-31G*
ABC
0.33201 0.12696 0.09508

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.568 0.000
C2 -0.609 -0.816 0.000
C3 0.450 -1.915 0.000
O4 -0.968 1.534 0.000
O5 1.194 0.833 0.000
H6 -1.269 -0.888 0.877
H7 -1.269 -0.888 -0.877
H8 -0.026 -2.903 0.000
H9 1.092 -1.836 -0.885
H10 1.092 -1.836 0.885
H11 -0.483 2.386 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.51232.52381.36681.22322.12132.12133.47172.78532.78531.8807
C21.51231.52652.37702.44361.09991.09992.16722.17222.17223.2043
C32.52381.52653.72892.84702.18602.18601.09701.09591.09594.4010
O41.36682.37703.72892.27242.59342.59344.53594.04764.04760.9801
O51.22322.44362.84702.27243.13013.13013.93062.81412.81412.2857
H62.12131.09992.18602.59343.13011.75442.52483.09472.54433.4793
H72.12131.09992.18602.59343.13011.75442.52482.54433.09473.4793
H83.47172.16721.09704.53593.93062.52482.52481.78081.78085.3089
H92.78532.17221.09594.04762.81413.09472.54431.78081.76924.5926
H102.78532.17221.09594.04762.81412.54433.09471.78081.76924.5926
H111.88073.20434.40100.98012.28573.47933.47935.30894.59264.5926

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 112.303 C1 C2 H6 107.551
C1 C2 H7 107.551 C1 O4 H11 105.328
C2 C1 O4 111.191 C2 C1 O5 126.255
C2 C3 H8 110.325 C2 C3 H9 110.786
C2 C3 H10 110.786 C3 C2 H6 111.652
C3 C2 H7 111.652 O4 C1 O5 122.554
H6 C2 H7 105.791 H8 C3 H9 108.601
H8 C3 H10 108.601 H9 C3 H10 107.655
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability