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

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-266.799809
Energy at 298.15K-266.807025
HF Energy-266.799809
Nuclear repulsion energy177.890654
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 B1B95/3-21G
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' 3547 3393 19.31      
2 A' 3177 3040 14.73      
3 A' 3100 2965 12.51      
4 A' 3099 2964 8.58      
5 A' 1817 1739 174.39      
6 A' 1564 1496 11.97      
7 A' 1513 1447 27.48      
8 A' 1474 1410 18.29      
9 A' 1423 1361 54.53      
10 A' 1345 1287 1.56      
11 A' 1155 1105 143.70      
12 A' 1092 1045 146.41      
13 A' 1032 987 4.02      
14 A' 820 784 10.54      
15 A' 611 585 17.33      
16 A' 466 446 31.54      
17 A' 258 247 2.60      
18 A" 3177 3040 15.44      
19 A" 3134 2998 0.69      
20 A" 1566 1499 10.12      
21 A" 1318 1261 0.30      
22 A" 1147 1098 0.03      
23 A" 839 802 22.65      
24 A" 666 637 122.02      
25 A" 532 509 35.54      
26 A" 223 214 0.00      
27 A" 56 53 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 20074.9 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 19205.7 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 B1B95/3-21G
ABC
0.33149 0.12941 0.09639

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.554 0.000
C2 -0.620 -0.814 0.000
C3 0.464 -1.887 0.000
O4 -0.970 1.525 0.000
O5 1.193 0.812 0.000
H6 -1.270 -0.890 0.877
H7 -1.270 -0.890 -0.877
H8 0.024 -2.886 0.000
H9 1.100 -1.780 -0.880
H10 1.100 -1.780 0.880
H11 -0.529 2.413 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5 H6 H7 H8 H9 H10 H11
C11.50232.48481.37251.22052.11372.11373.43972.72642.72641.9327
C21.50231.52492.36522.43581.09421.09422.16902.16022.16023.2287
C32.48481.52493.70102.79622.18362.18361.09111.09131.09134.4132
O41.37252.36523.70102.27752.58682.58684.52103.99803.99800.9919
O51.22052.43582.79622.27753.11983.11983.87832.73932.73932.3508
H62.11371.09422.18362.58683.11981.75422.53463.08162.53163.4971
H72.11371.09422.18362.58683.11981.75422.53462.53163.08163.4971
H83.43972.16901.09114.52103.87832.53462.53461.77631.77635.3273
H92.72642.16021.09133.99802.73933.08162.53161.77631.75994.5837
H102.72642.16021.09133.99802.73932.53163.08161.77631.75994.5837
H111.93273.22874.41320.99192.35083.49713.49715.32734.58374.5837

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 110.328 C1 C2 H6 107.954
C1 C2 H7 107.954 C1 O4 H11 108.581
C2 C1 O4 110.637 C2 C1 O5 126.594
C2 C3 H8 110.926 C2 C3 H9 110.217
C2 C3 H10 110.217 C3 C2 H6 111.918
C3 C2 H7 111.918 O4 C1 O5 122.769
H6 C2 H7 106.567 H8 C3 H9 108.960
H8 C3 H10 108.960 H9 C3 H10 107.480
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.650      
2 C -0.540      
3 C -0.600      
4 O -0.577      
5 O -0.487      
6 H 0.258      
7 H 0.258      
8 H 0.209      
9 H 0.227      
10 H 0.227      
11 H 0.376      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.279 -0.044 0.000 1.280
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.683 -0.314 0.000
y -0.314 -24.305 0.000
z 0.000 0.000 -29.000
Traceless
 xyz
x -8.031 -0.314 0.000
y -0.314 7.537 0.000
z 0.000 0.000 0.494
Polar
3z2-r20.988
x2-y2-10.379
xy-0.314
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.326 -0.114 0.000
y -0.114 5.882 0.000
z 0.000 0.000 3.605


<r2> (average value of r2) Å2
<r2> 122.983
(<r2>)1/2 11.090