CCCBDB calculation results Page

Home
- All data for one species
- Geometry
  - Experimental
  - Calculated
  - Comparisons
  - Bad Calculations
    - Bad moment of inertia
  - Tutorials and Explanations
    - Angle formulas
- Vibrations
  - Experimental
    - Vibrational frequencies
  - Calculated
    - Frequencies
  - Scale factors
- Reactions
- Entropies
- Ions
  - List Ions
  - Energy
    - Calculated Ionization Energy
    - Compare Ionzation energy
  - Electron Affinity
    - Calculated Electron affinity
    - Compare Electron affinity
  - Proton Affinity
    - Calculated Proton affinity
    - Compare Proton affinity
  - Ionization changes point group
Experimental
Calculated
- Energy
  - Optimized
  - Reaction
    - Reaction Energy 0K
    - Reaction Energy 298K
  - Internal Rotation
  - Orbital
  - Nuclear repulsion energy
  - Correlation
    - Full vs Frozen core energies
    - Partial correlation energies
  - Ion
  - Excited State
  - Basis Set Extrapolation
    - BSE energy
    - BSE Bond lengths
- Geometry
  - Calculated geometry
    - AIM bond orders
    - One type of bond
  - Rotation
  - Point group
  - State symmetry
  - <r2>
    - Sorted by r2
  - Z-matrix
  - Bad Calculations
- Vibrations
  - Frequencies
    - Animated vibrations
    - Anharmonic
  - Zero point energy (ZPE)
  - Scale Factors
  - Bad Calculations
- Electrostatics
  - Charges
  - Dipole
  - Quadrupole
  - Polarizability
  - Spin
    - Spin density
- Entropy and Heat Capacity
- Reaction
  - Reaction Energy 0K
  - Reaction Energy 298K
  - Isodesmic reactions
  - Transition State
- Lookup by property
  - By frequency
Comparisons
- Geometry
- Vibrations
- Energy
  - Reaction
  - Single point vs optimized
  - DFT grid size on energy
  - Semiempirical enthalpy
  - Internal rotation
  - Similar molecules
- Entropy
- Electrostatics
- Ion
Resources
- Info on Results
  - Calculations Done
  - Basis functions used
  - I/O files
- Glossary
- Conversion Forms
- Links
  - NIST Links
  - External links
- Thermochemistry
- Tutorials
  - Vibrations
    - Why scale vibrations
    - Zero-point energies
  - Entropy
    - Methyl rotor entropy
    - Entropy and conformations
  - Energy
  - Electrostatics
    - Dipole parts by point group
    - Quadrupoles
  - Geometry
    - Angle formulas
  - Cost
    - Cost Comparison
    - Timings Comparison
- Bad Calculations
  - Geometry
  - Vibrations
  - Low excited states
  - Oddities
    - NaCN Is not linear
FAQ Help
- Units
  - Choose Units
  - Explanations
- Credits
- Just show me
  - Show me a calculated geometry
- Summary
- Using
- List
  - Recent molecules
    - Choose a few
  - Molecules
  - Geometry
  - Vibrations
    - Big anharmonicity
  - Energy
    - Enthalpy at 0 Kelvin
  - Similar molecules
  - Ions, Dipoles, etc.
- Index of CCCBDB
- Feedback
  - Error form
  - Wants

	hartrees
Energy at 0K	-307.047583
Energy at 298.15K
HF Energy	-305.978142
Nuclear repulsion energy	242.898732

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)
1	A'	3187	3068
2	A'	3142	3026
3	A'	3076	2962
4	A'	3074	2960
5	A'	3060	2947
6	A'	1757	1692
7	A'	1536	1479
8	A'	1516	1460
9	A'	1492	1437
10	A'	1451	1397
11	A'	1422	1369
12	A'	1410	1357
13	A'	1268	1221
14	A'	1149	1106
15	A'	1086	1046
16	A'	1022	984
17	A'	944	909
18	A'	864	832
19	A'	638	614
20	A'	431	415
21	A'	371	358
22	A'	197	189
23	A"	3155	3038
24	A"	3153	3036
25	A"	3124	3008
26	A"	1496	1440
27	A"	1485	1430
28	A"	1301	1253
29	A"	1196	1152
30	A"	1065	1025
31	A"	823	792
32	A"	578	557
33	A"	261	251
34	A"	147	141
35	A"	64	62
36	A"	64i	62i

Atom	x (Å)	y (Å)	z (Å)
C1	-2.316	0.041	0.000
C2	-0.913	-0.516	0.000
O3	0.000	0.492	0.000
O4	-0.613	-1.695	0.000
C5	1.382	0.059	0.000
C6	2.240	1.308	0.000
H7	-3.029	-0.782	0.000
H8	-2.465	0.665	0.883
H9	-2.465	0.665	-0.883
H10	1.559	-0.558	0.885
H11	1.559	-0.558	-0.885
H12	3.296	1.025	0.000
H13	2.042	1.911	-0.888
H14	2.042	1.911	0.888

	C1	C2	O3	O4	C5	C6	H7	H8	H9	H10	H11	H12	H13	H14
C1		1.5099	2.3597	2.4324	3.6983	4.7290	1.0887	1.0920	1.0920	4.0201	4.0201	5.6980	4.8250	4.8250
C2	1.5099		1.3602	1.2167	2.3660	3.6424	2.1329	2.1415	2.1415	2.6261	2.6261	4.4823	3.9259	3.9259
O3	2.3597	1.3602		2.2717	1.4484	2.3840	3.2861	2.6243	2.6243	2.0776	2.0776	3.3390	2.6406	2.6406
O4	2.4324	1.2167	2.2717		2.6566	4.1420	2.5834	3.1281	3.1281	2.6068	2.6068	4.7622	4.5656	4.5656
C5	3.6983	2.3660	1.4484	2.6566		1.5149	4.4907	3.9936	3.9936	1.0929	1.0929	2.1439	2.1575	2.1575
C6	4.7290	3.6424	2.3840	4.1420	1.5149		5.6684	4.8303	4.8303	2.1737	2.1737	1.0934	1.0920	1.0920
H7	1.0887	2.1329	3.2861	2.5834	4.4907	5.6684		1.7868	1.7868	4.6785	4.6785	6.5783	5.8102	5.8102
H8	1.0920	2.1415	2.6243	3.1281	3.9936	4.8303	1.7868		1.7668	4.2063	4.5628	5.8398	5.0005	4.6762
H9	1.0920	2.1415	2.6243	3.1281	3.9936	4.8303	1.7868	1.7668		4.5628	4.2063	5.8398	4.6762	5.0005
H10	4.0201	2.6261	2.0776	2.6068	1.0929	2.1737	4.6785	4.2063	4.5628		1.7694	2.5105	3.0776	2.5156
H11	4.0201	2.6261	2.0776	2.6068	1.0929	2.1737	4.6785	4.5628	4.2063	1.7694		2.5105	2.5156	3.0776
H12	5.6980	4.4823	3.3390	4.7622	2.1439	1.0934	6.5783	5.8398	5.8398	2.5105	2.5105		1.7743	1.7743
H13	4.8250	3.9259	2.6406	4.5656	2.1575	1.0920	5.8102	5.0005	4.6762	3.0776	2.5156	1.7743		1.7763
H14	4.8250	3.9259	2.6406	4.5656	2.1575	1.0920	5.8102	4.6762	5.0005	2.5156	3.0776	1.7743	1.7763

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	O3	110.496	C1	C2	O4	125.937
C2	C1	H7	109.258	C2	C1	H8	109.743
C2	C1	H9	109.743	C2	O3	C5	114.757
O3	C2	O4	123.567	O3	C5	C6	107.102
O3	C5	H10	108.875	O3	C5	H11	108.875
C5	C6	H12	109.498	C5	C6	H13	110.663
C5	C6	H14	110.663	C6	C5	H10	111.912
C6	C5	H11	111.912	H7	C1	H8	110.047
H7	C1	H9	110.047	H8	C1	H9	107.987
H10	C5	H11	108.090	H12	C6	H13	108.558
H12	C6	H14	108.558	H13	C6	H14	108.846

All results from a given calculation for C₄H₈O₂ (Ethyl acetate)

using model chemistry: MP4/TZVP

States and conformations

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
	Home All data for one species Geometry Experimental Experimental Geometries Same bond/angle many molecules Internal Coordinates by type Bond angles Calculated Calculated geometry Rotational constant Moments of inertia Products of moments of inertia BSE Bond lengths Show me a calculated geometry Comparisons Bonds, angles Rotational Constants Products of moments of inertia Point group Bad Calculations Bad moment of inertia Tutorials and Explanations Angle formulas Vibrations Experimental Vibrational frequencies Calculated Frequencies Scale factors Reactions Entropies Ions List Ions Energy Calculated Ionization Energy Compare Ionzation energy Electron Affinity Calculated Electron affinity Compare Electron affinity Proton Affinity Calculated Proton affinity Compare Proton affinity Ionization changes point group Experimental One molecule all properties One property a few molecules Enthalpy of formation Entropy Integrated Heat Capacity Heat Capacity Rotational Constants Vibrational Frequencies Dipole moment Ionization Energy Polarizability Quadrupole Point Groups Geometry Experimental Geometries Internal Coordinates by type Bond angles Rotational Constants Point Groups Diatomic bond lengths Vibrations Vibrational frequencies Diatomic Triatomics Energy Atomization Energy Internal Rotation Electrostatics Dipole Quadrupole Polarizability Reference Data Reference states Spin Splittings Molecules with good enthalpy Enthalpy at 0 Kelvin Calculated Energy Optimized Energy Energy 298K Minimum conformation Hydrogen bonds H bond with counterpoise Reaction Reaction Energy 0K Reaction Energy 298K Internal Rotation Barriers to internal rotation Rotational barrier and dipole Rotational Barrier 2 molecules Orbital HOMO LUMO gap HOMO Orbital Energies Nuclear repulsion energy Correlation Full vs Frozen core energies Partial correlation energies Ion Calculated Ionization Energy Vertical ionization Energy Calculated Electron affinity Calculated Proton affinity Atom charge differences Excited State Singlet triplet gap Electronic state Transition state Basis Set Extrapolation BSE energy BSE Bond lengths Geometry Calculated geometry AIM bond orders One type of bond Rotation Rotational constant Products of moments of inertia Moments of inertia Inertial defects Second moments Point group State symmetry <r2> Sorted by r2 Z-matrix Bad Calculations Bad moment of inertia Bad Calculated Bond Lengths Bad point group Worst molecules Vibrations Frequencies Animated vibrations Anharmonic Zero point energy (ZPE) Scale Factors Scale factors Scale factor uncertainty Calculate a scale factor Why scale vibrations Set scaling factors Bad Calculations Bad Vib. HF vs MP2 Bad vib. Calc. vs exp. Big anharmonicity Electrostatics Charges Mulliken CHELP Aim ESP Dipole Dipole Dipole angle Dipole calculation types Quadrupole Polarizability Spin Spin density Entropy and Heat Capacity Entropy Reaction entropy Heat Capacity Reaction Reaction Energy 0K Reaction Energy 298K Isodesmic reactions Transition State Transition state Transition state frequencies Transition state geometries IRC Lookup by property By frequency Comparisons Geometry Bonds, angles Bond, angle, or dihedral DFT grid size on point group DFT grid on bond length Core correlation - bond length Same bond/angle many molecules Isoelectronic diatomics Isoelectronic triatomic angles Average bond lengths Rotation Rotational Constants Products of moments of inertia Point group Vibrations Vibrations 2 calculations Frequency differences One frequency Zero point energy Intensity Intensity for one mode Vibrational intensities Reduced mass comparison Anharmonic Triatomic Scale factors Energy Reaction Reaction Energy 0K Reaction Energy 298K Atomization 0K Atomization 298K Single point vs optimized DFT grid size on energy Semiempirical enthalpy Internal rotation Similar molecules Conformation Sets of isomers Sets of tautomers Isomers Entropy Entropy Heat capacity Entropy of several molecules Integrated heat capacity Reaction entropy Electrostatics Dipole Polarizability Several molecules Quadrupole Ion Compare Ionzation energy Koopman ionization energy Koopman IE for a few molecules Compare Electron affinity Compare Proton affinity Protonation Site Resources Info on Results Calculations Done Method and basis set List molecules One molecule Multiple conformers, states Multiple conformers, states Basis functions used I/O files Input/output files MOL file Z-matrix wfn files Glossary Conversion Forms B to I, I to B Angle formulas Integrated heat Capacity Calculating Enthalpy Links NIST Links NIST webbook bibliographic data CCCBDB Experimental data External links Basis Set Exchange Computational Chemistry List Thermochemistry in Gaussian Minnesota Database Collection Benchmark Energy and Geometry Point Groups Thermochemistry Thermochemistry Molecules with good enthalpy A → B + C Reference states Tutorials Vibrations Why scale vibrations Zero-point energies Entropy Methyl rotor entropy Entropy and conformations Energy Getting enthalpy of formation Vertical vs adiabatic IE Thermo from calculations Electrostatics Dipole parts by point group Quadrupoles Geometry Angle formulas Cost Cost Comparison Timings Comparison Bad Calculations Geometry Bad moment of inertia Bad Calculated Bond Lengths Bad point group Worst molecules Vibrations Bad vib. Calc. vs exp. Bad Vib. HF vs MP2 Bad scale factors Low excited states Oddities NaCN Is not linear FAQ Help Units Choose Units Energy Bond length Rotational Constant Moment of Inertia Dipole and Quadrupole Polarizability Explanations Hartree cm-1 Debye Credits Just show me Show me a calculated geometry Summary Using older interface Limit Basis sets Method options List Recent molecules Choose a few Molecules Number of atoms By heavy atoms Diatomics InChI Deuterated Dimers Geometry Point group Point group count Bonds types Isodesmic reactions Bad point group Multiple conformers, states Vibrations Big anharmonicity Energy Enthalpy at 0 Kelvin Similar molecules Similar Isomers Cis/trans Tautomers Multiple conformers, states Ions, Dipoles, etc. List Ions Ionization changes point group Dipole Quadrupole Polarizability Proton Affinities Index of CCCBDB Feedback Error form Wants
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C4H8O2 (Ethyl acetate)

using model chemistry: MP4/TZVP

States and conformations

All results from a given calculation for C₄H₈O₂ (Ethyl acetate)