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	-307.275679
Energy at 298.15K	-307.284891
Nuclear repulsion energy	247.653755

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3163	3120	0.39
2	A₁	3093	3050	20.19
3	A₁	2950	2909	6.54
4	A₁	1671	1648	203.66
5	A₁	1477	1456	3.28
6	A₁	1443	1424	12.15
7	A₁	1381	1362	6.30
8	A₁	1194	1178	2.92
9	A₁	1147	1132	0.36
10	A₁	873	861	33.67
11	A₁	495	489	0.25
12	A₁	265	261	4.12
13	A₂	3014	2973	0.00
14	A₂	1447	1428	0.00
15	A₂	1140	1124	0.00
16	A₂	652	643	0.00
17	A₂	239	236	0.00
18	A₂	126	124	0.00
19	B₁	3015	2974	74.35
20	B₁	1447	1427	13.85
21	B₁	1145	1130	0.63
22	B₁	666	657	78.35
23	B₁	650	641	4.04
24	B₁	263	259	0.00
25	B₁	100	99	8.13
26	B₂	3248	3204	4.29
27	B₂	3093	3050	14.03
28	B₂	2949	2909	76.21
29	B₂	1471	1451	13.52
30	B₂	1449	1429	60.70
31	B₂	1311	1293	435.03
32	B₂	1178	1162	19.03
33	B₂	1047	1033	91.62
34	B₂	921	909	0.79
35	B₂	545	538	0.38
36	B₂	377	372	8.45

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	1.427
C2	0.000	0.000	0.074
H3	0.000	0.929	1.992
H4	0.000	-0.929	1.992
O5	0.000	1.085	-0.748
O6	0.000	-1.085	-0.748
C7	0.000	2.357	-0.107
C8	0.000	-2.357	-0.107
H9	0.000	3.101	-0.915
H10	0.000	-3.101	-0.915
H11	-0.900	2.491	0.522
H12	0.900	2.491	0.522
H13	0.900	-2.491	0.522
H14	-0.900	-2.491	0.522

	C1	C2	H3	H4	O5	O6	C7	C8	H9	H10	H11	H12	H13	H14
C1		1.3536	1.0875	1.0875	2.4306	2.4306	2.8118	2.8118	3.8858	3.8858	2.7992	2.7992	2.7992	2.7992
C2	1.3536		2.1315	2.1315	1.3609	1.3609	2.3634	2.3634	3.2546	3.2546	2.6864	2.6864	2.6864	2.6864
H3	1.0875	2.1315		1.8589	2.7440	3.4005	2.5377	3.8989	3.6280	4.9690	2.3258	2.3258	3.8303	3.8303
H4	1.0875	2.1315	1.8589		3.4005	2.7440	3.8989	2.5377	4.9690	3.6280	3.8303	3.8303	2.3258	2.3258
O5	2.4306	1.3609	2.7440	3.4005		2.1701	1.4240	3.5008	2.0228	4.1893	2.0973	2.0973	3.9002	3.9002
O6	2.4306	1.3609	3.4005	2.7440	2.1701		3.5008	1.4240	4.1893	2.0228	3.9002	3.9002	2.0973	2.0973
C7	2.8118	2.3634	2.5377	3.8989	1.4240	3.5008		4.7131	1.0986	5.5170	1.1057	1.1057	4.9705	4.9705
C8	2.8118	2.3634	3.8989	2.5377	3.5008	1.4240	4.7131		5.5170	1.0986	4.9705	4.9705	1.1057	1.1057
H9	3.8858	3.2546	3.6280	4.9690	2.0228	4.1893	1.0986	5.5170		6.2019	1.8013	1.8013	5.8434	5.8434
H10	3.8858	3.2546	4.9690	3.6280	4.1893	2.0228	5.5170	1.0986	6.2019		5.8434	5.8434	1.8013	1.8013
H11	2.7992	2.6864	2.3258	3.8303	2.0973	3.9002	1.1057	4.9705	1.8013	5.8434		1.7995	5.2975	4.9825
H12	2.7992	2.6864	2.3258	3.8303	2.0973	3.9002	1.1057	4.9705	1.8013	5.8434	1.7995		4.9825	5.2975
H13	2.7992	2.6864	3.8303	2.3258	3.9002	2.0973	4.9705	1.1057	5.8434	1.8013	5.2975	4.9825		1.7995
H14	2.7992	2.6864	3.8303	2.3258	3.9002	2.0973	4.9705	1.1057	5.8434	1.8013	4.9825	5.2975	1.7995

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	O5	127.125	C1	C2	O6	127.125
C2	C1	H3	121.275	C2	C1	H4	121.275
C2	O5	C7	116.116	C2	O6	C8	116.116
H3	C1	H4	117.449	O5	C2	O6	105.750
O5	C7	H9	105.897	O5	C7	H11	111.388
O5	C7	H12	111.388	O6	C8	H10	105.897
O6	C8	H13	111.388	O6	C8	H14	111.388
H9	C7	H11	109.602	H9	C7	H12	109.602
H10	C8	H13	109.602	H10	C8	H14	109.602
H11	C7	H12	108.916	H13	C8	H14	108.916

All results from a given calculation for C₄H₈O₂ (Ethene, 1,1-dimethoxy-)

using model chemistry: PBEPBE/6-31G**

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

Number	Element	Mulliken
1	C	-0.406
2	C	0.559
3	H	0.103
4	H	0.103
5	O	-0.431
6	O	-0.431
7	C	-0.147
8	C	-0.147
9	H	0.140
10	H	0.140
11	H	0.130
12	H	0.130
13	H	0.130
14	H	0.130

<r²>	188.027
(<r²>)^1/2	13.712

All results from a given calculation for C4H8O2 (Ethene, 1,1-dimethoxy-)

using model chemistry: PBEPBE/6-31G**

States and conformations

All results from a given calculation for C₄H₈O₂ (Ethene, 1,1-dimethoxy-)