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	-304.363496
Energy at 298.15K	-304.372821
Nuclear repulsion energy	247.796153

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A₁	3161	3109	2.47
2	A₁	3099	3048	8.80
3	A₁	2939	2891	4.21
4	A₁	1690	1662	158.95
5	A₁	1512	1487	7.62
6	A₁	1460	1436	22.79
7	A₁	1401	1378	3.82
8	A₁	1188	1168	0.93
9	A₁	1128	1109	0.00
10	A₁	862	848	30.34
11	A₁	503	495	0.00
12	A₁	263	259	5.41
13	A₂	2994	2945	0.00
14	A₂	1475	1451	0.00
15	A₂	1133	1115	0.00
16	A₂	662	652	0.00
17	A₂	230	227	0.00
18	A₂	142	139	0.00
19	B₁	2995	2946	56.25
20	B₁	1475	1450	30.30
21	B₁	1139	1121	1.00
22	B₁	792	779	132.63
23	B₁	680	669	1.98
24	B₁	263	258	0.01
25	B₁	100	98	10.88
26	B₂	3244	3191	1.73
27	B₂	3099	3048	6.97
28	B₂	2939	2891	49.65
29	B₂	1508	1483	7.58
30	B₂	1469	1445	168.71
31	B₂	1342	1320	286.24
32	B₂	1157	1138	42.21
33	B₂	1052	1034	69.39
34	B₂	935	919	0.00
35	B₂	548	539	0.78
36	B₂	379	372	13.23

Atom	x (Å)	y (Å)	z (Å)
C1	0.000	0.000	1.395
C2	0.000	0.000	0.056
H3	0.000	0.930	1.961
H4	0.000	-0.930	1.961
O5	0.000	1.090	-0.759
O6	0.000	-1.090	-0.759
C7	0.000	2.356	-0.081
C8	0.000	-2.356	-0.081
H9	0.000	3.122	-0.870
H10	0.000	-3.122	-0.870
H11	-0.898	2.472	0.559
H12	0.898	2.472	0.559
H13	0.898	-2.472	0.559
H14	-0.898	-2.472	0.559

	C1	C2	H3	H4	O5	O6	C7	C8	H9	H10	H11	H12	H13	H14
C1		1.3393	1.0888	1.0888	2.4145	2.4145	2.7805	2.7805	3.8572	3.8572	2.7599	2.7599	2.7599	2.7599
C2	1.3393		2.1202	2.1202	1.3613	1.3613	2.3600	2.3600	3.2564	3.2564	2.6779	2.6779	2.6779	2.6779
H3	1.0888	2.1202		1.8602	2.7251	3.3886	2.4911	3.8692	3.5805	4.9432	2.2695	2.2695	3.7879	3.7879
H4	1.0888	2.1202	1.8602		3.3886	2.7251	3.8692	2.4911	4.9432	3.5805	3.7879	3.7879	2.2695	2.2695
O5	2.4145	1.3613	2.7251	3.3886		2.1805	1.4359	3.5123	2.0348	4.2137	2.1103	2.1103	3.9032	3.9032
O6	2.4145	1.3613	3.3886	2.7251	2.1805		3.5123	1.4359	4.2137	2.0348	3.9032	3.9032	2.1103	2.1103
C7	2.7805	2.3600	2.4911	3.8692	1.4359	3.5123		4.7120	1.0994	5.5345	1.1089	1.1089	4.9526	4.9526
C8	2.7805	2.3600	3.8692	2.4911	3.5123	1.4359	4.7120		5.5345	1.0994	4.9526	4.9526	1.1089	1.1089
H9	3.8572	3.2564	3.5805	4.9432	2.0348	4.2137	1.0994	5.5345		6.2440	1.8083	1.8083	5.8432	5.8432
H10	3.8572	3.2564	4.9432	3.5805	4.2137	2.0348	5.5345	1.0994	6.2440		5.8432	5.8432	1.8083	1.8083
H11	2.7599	2.6779	2.2695	3.7879	2.1103	3.9032	1.1089	4.9526	1.8083	5.8432		1.7957	5.2604	4.9444
H12	2.7599	2.6779	2.2695	3.7879	2.1103	3.9032	1.1089	4.9526	1.8083	5.8432	1.7957		4.9444	5.2604
H13	2.7599	2.6779	3.7879	2.2695	3.9032	2.1103	4.9526	1.1089	5.8432	1.8083	5.2604	4.9444		1.7957
H14	2.7599	2.6779	3.7879	2.2695	3.9032	2.1103	4.9526	1.1089	5.8432	1.8083	4.9444	5.2604	1.7957

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	O5	126.784	C1	C2	O6	126.784
C2	C1	H3	121.324	C2	C1	H4	121.324
C2	O5	C7	115.046	C2	O6	C8	115.046
H3	C1	H4	117.352	O5	C2	O6	106.433
O5	C7	H9	105.995	O5	C7	H11	111.407
O5	C7	H12	111.407	O6	C8	H10	105.995
O6	C8	H13	111.407	O6	C8	H14	111.407
H9	C7	H11	109.950	H9	C7	H12	109.950
H10	C8	H13	109.950	H10	C8	H14	109.950
H11	C7	H12	108.130	H13	C8	H14	108.130

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

using model chemistry: LSDA/3-21G

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	-0.525
2	C	0.518
3	H	0.194
4	H	0.194
5	O	-0.454
6	O	-0.454
7	C	-0.431
8	C	-0.431
9	H	0.248
10	H	0.248
11	H	0.223
12	H	0.223
13	H	0.223
14	H	0.223

<r²>	0.000
(<r²>)^1/2	0.000

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

using model chemistry: LSDA/3-21G

States and conformations

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