return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C3H5ClO2 (Carbonochloridic acid, ethyl ester)

using model chemistry: B2PLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B2PLYP/6-31G*
 hartrees
Energy at 0K-727.543530
Energy at 298.15K-727.549788
HF Energy-727.251644
Nuclear repulsion energy291.266460
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 B2PLYP/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3196 3034 27.25      
2 A 3179 3017 15.47      
3 A 3175 3013 0.99      
4 A 3122 2964 10.62      
5 A 3100 2943 10.54      
6 A 1900 1803 457.45      
7 A 1563 1484 3.66      
8 A 1547 1468 5.13      
9 A 1535 1457 6.55      
10 A 1470 1395 15.25      
11 A 1428 1356 10.90      
12 A 1330 1262 0.58      
13 A 1213 1151 507.39      
14 A 1202 1141 4.30      
15 A 1160 1101 27.86      
16 A 1055 1002 64.39      
17 A 940 892 103.37      
18 A 842 799 0.65      
19 A 666 632 19.67      
20 A 646 613 90.30      
21 A 531 504 3.55      
22 A 447 424 12.55      
23 A 331 314 5.66      
24 A 267 253 0.56      
25 A 195 185 0.14      
26 A 109 104 0.81      
27 A 83 79 0.69      

Unscaled Zero Point Vibrational Energy (zpe) 18114.3 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 17194.1 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 B2PLYP/6-31G*
ABC
0.16874 0.06062 0.04536

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -0.558 0.489 -0.370
H2 -1.460 0.119 1.465
H3 -1.160 -1.333 0.479
C4 -1.465 -0.285 0.449
H5 -3.169 0.877 -0.190
H6 -3.571 -0.730 0.451
H7 -2.863 -0.571 -1.171
C8 -2.858 -0.169 -0.156
O9 1.322 1.604 0.123
Cl10 1.624 -0.922 -0.049
C11 0.740 0.548 0.002

Atom - Atom Distances (Å)
  O1 H2 H3 C4 H5 H6 H7 C8 O9 Cl10 C11
O12.07832.09861.44742.64663.35242.66032.40222.24082.61811.3512
H22.07831.78011.09372.49712.49093.06442.15983.42723.58952.6761
H32.09861.78011.09133.06082.48462.49022.15443.86192.86352.7158
C41.44741.09371.09132.15942.15162.15781.52283.38343.19332.3994
H52.64662.49713.06082.15941.77631.77581.09174.56105.12193.9277
H63.35242.49092.48462.15161.77631.77641.09145.43115.22204.5182
H72.66033.06442.49022.15781.77581.77641.09164.89074.63823.9504
C82.40222.15982.15441.52281.09171.09141.09164.54934.54633.6720
O92.24083.42723.86193.38344.56105.43114.89074.54932.54961.2118
Cl102.61813.58952.86353.19335.12195.22204.63824.54632.54961.7164
C111.35122.67612.71582.39943.92774.51823.95043.67201.21181.7164

picture of Carbonochloridic acid, ethyl ester state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C4 H2 108.950 O1 C4 H3 110.734
O1 C4 C8 107.928 O1 C11 O9 121.826
O1 C11 Cl10 116.681 H2 C4 H3 109.113
H2 C4 C8 110.194 H3 C4 C8 109.909
C4 O1 C11 118.000 C4 C8 H5 110.282
C4 C8 H6 109.683 C4 C8 H7 110.159
H5 C8 H6 108.914 H5 C8 H7 108.847
H6 C8 H7 108.925 O9 C11 Cl10 120.092
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.477      
2 H 0.188      
3 H 0.188      
4 C -0.044      
5 H 0.183      
6 H 0.169      
7 H 0.183      
8 C -0.479      
9 O -0.417      
10 Cl -0.059      
11 C 0.566      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.602 0.013 0.000
y 0.013 7.842 -0.000
z 0.000 -0.000 4.807


<r2> (average value of r2) Å2
<r2> 233.361
(<r2>)1/2 15.276