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	-306.950595
Energy at 298.15K	-306.959986
HF Energy	-305.924013
Nuclear repulsion energy	237.431690

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A	3775	3657	62.07
2	A	3133	3035	24.47
3	A	3115	3018	34.03
4	A	3109	3011	33.77
5	A	3083	2987	0.73
6	A	3069	2973	16.36
7	A	3045	2949	13.22
8	A	3032	2937	27.02
9	A	1810	1754	310.70
10	A	1501	1454	5.91
11	A	1492	1445	6.81
12	A	1487	1440	0.87
13	A	1476	1430	8.66
14	A	1412	1368	8.92
15	A	1398	1354	39.80
16	A	1372	1329	17.31
17	A	1320	1279	1.19
18	A	1288	1248	2.84
19	A	1263	1223	44.09
20	A	1214	1176	129.46
21	A	1119	1084	5.16
22	A	1084	1050	73.69
23	A	1069	1036	10.98
24	A	926	897	4.44
25	A	891	863	0.38
26	A	875	848	10.68
27	A	750	727	5.79
28	A	741	718	27.64
29	A	619	599	72.84
30	A	580	562	51.98
31	A	427	414	2.85
32	A	330	319	1.26
33	A	246	238	0.01
34	A	185	179	0.18
35	A	91	88	0.39
36	A	35	34	0.84

Atom	x (Å)	y (Å)	z (Å)
C1	1.173	-0.132	0.113
C2	-0.244	-0.150	0.645
C3	-1.256	0.067	-0.503
C4	-2.705	0.016	0.003
O5	1.652	1.142	-0.014
O6	1.824	-1.107	-0.213
H7	-0.409	-1.132	1.117
H8	-0.359	0.642	1.404
H9	-1.096	-0.712	-1.271
H10	-1.056	1.042	-0.981
H11	-3.419	0.169	-0.825
H12	-2.927	-0.961	0.468
H13	-2.888	0.802	0.758
H14	2.539	1.060	-0.402

	C1	C2	C3	C4	O5	O6	H7	H8	H9	H10	H11	H12	H13	H14
C1		1.5144	2.5135	3.8831	1.3671	1.2165	2.1246	2.1482	2.7206	2.7469	4.6963	4.1985	4.2167	1.8843
C2	1.5144		1.5453	2.5490	2.3881	2.4348	1.1017	1.1032	2.1707	2.1742	3.5128	2.8082	2.8121	3.2105
C3	2.5135	1.5453		1.5364	3.1388	3.3080	2.1860	2.1841	1.1051	1.1046	2.1893	2.1892	2.1895	3.9234
C4	3.8831	2.5490	1.5364		4.5010	4.6713	2.7989	2.8035	2.1774	2.1774	1.1033	1.1046	1.1047	5.3622
O5	1.3671	2.3881	3.1388	4.5010		2.2644	3.2715	2.5115	3.5458	2.8778	5.2270	5.0624	4.6179	0.9708
O6	1.2165	2.4348	3.3080	4.6713	2.2644		2.5994	3.2310	3.1306	3.6744	5.4297	4.8016	5.1754	2.2900
H7	2.1246	1.1017	2.1860	2.7989	3.2715	2.5994		1.7978	2.5203	3.0904	3.8107	2.6061	3.1644	3.9755
H8	2.1482	1.1032	2.1841	2.8035	2.5115	3.2310	1.7978		3.0871	2.5170	3.8148	3.1687	2.6148	3.4400
H9	2.7206	2.1707	1.1051	2.1774	3.5458	3.1306	2.5203	3.0871		1.7782	2.5231	2.5369	3.1009	4.1363
H10	2.7469	2.1742	1.1046	2.1774	2.8778	3.6744	3.0904	2.5170	1.7782		2.5237	3.1004	2.5371	3.6411
H11	4.6963	3.5128	2.1893	1.1033	5.2270	5.4297	3.8107	3.8148	2.5231	2.5237		1.7856	1.7857	6.0384
H12	4.1985	2.8082	2.1892	1.1046	5.0624	4.8016	2.6061	3.1687	2.5369	3.1004	1.7856		1.7870	5.8921
H13	4.2167	2.8121	2.1895	1.1047	4.6179	5.1754	3.1644	2.6148	3.1009	2.5371	1.7857	1.7870		5.5549
H14	1.8843	3.2105	3.9234	5.3622	0.9708	2.2900	3.9755	3.4400	4.1363	3.6411	6.0384	5.8921	5.5549

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C3	110.466	C1	C2	H7	107.562
C1	C2	H8	109.300	C1	O5	H14	106.169
C2	C1	O5	111.846	C2	C1	O6	125.791
C2	C3	C4	111.619	C2	C3	H9	108.839
C2	C3	H10	109.136	C3	C2	H7	110.229
C3	C2	H8	109.987	C3	C4	H11	111.006
C3	C4	H12	110.918	C3	C4	H13	110.938
C4	C3	H9	109.967	C4	C3	H10	109.997
O5	C1	O6	122.325	H7	C2	H8	109.250
H9	C3	H10	107.170	H11	C4	H12	107.940
H11	C4	H13	107.939	H12	C4	H13	107.967

All results from a given calculation for C₄H₈O₂ (Butanoic acid)

using model chemistry: QCISD/aug-cc-pVDZ

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 (Butanoic acid)

using model chemistry: QCISD/aug-cc-pVDZ

States and conformations

All results from a given calculation for C₄H₈O₂ (Butanoic acid)