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	-195.842650
Energy at 298.15K	-195.852428
HF Energy	-195.144779
Nuclear repulsion energy	174.122036

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A	3213	3016	34.77
2	A	3198	3002	29.66
3	A	3185	2989	18.71
4	A	3180	2985	7.81
5	A	3095	2905	15.29
6	A	3090	2900	42.94
7	A	3083	2893	21.51
8	A	1812	1700	0.54
9	A	1562	1466	6.08
10	A	1561	1465	7.47
11	A	1547	1452	1.61
12	A	1486	1395	1.88
13	A	1477	1386	2.65
14	A	1475	1384	6.58
15	A	1421	1334	1.85
16	A	1281	1202	3.10
17	A	1173	1101	6.05
18	A	1103	1035	5.71
19	A	1005	943	1.81
20	A	995	934	0.91
21	A	794	745	1.39
22	A	532	500	2.03
23	A	393	369	0.30
24	A	308	289	0.22
25	A	3151	2957	24.67
26	A	3146	2952	36.30
27	A	3142	2949	9.37
28	A	1552	1456	18.94
29	A	1544	1449	0.77
30	A	1533	1439	0.88
31	A	1141	1071	0.03
32	A	1095	1028	0.82
33	A	1046	982	1.96
34	A	838	787	12.96
35	A	444	417	2.29
36	A	264	248	1.43
37	A	180	169	0.90
38	A	123	115	0.34
39	A	96	90	0.22

Atom	x (Å)	y (Å)	z (Å)
C1	-1.508	0.498	0.000
H2	-1.970	-0.490	0.000
H3	-1.870	1.042	0.881
H4	-1.870	1.042	-0.881
C5	0.265	-2.098	0.000
H6	0.645	-2.629	-0.881
H7	0.645	-2.629	0.881
H8	-0.823	-2.186	0.000
C9	0.738	-0.670	0.000
H10	1.822	-0.554	0.000
C11	0.000	0.449	0.000
C12	0.662	1.806	0.000
H13	1.753	1.721	0.000
H14	0.363	2.387	0.881
H15	0.363	2.387	-0.881

	C1	H2	H3	H4	C5	H6	H7	H8	C9	H10	C11	C12	H13	H14	H15
C1		1.0909	1.0969	1.0969	3.1441	3.8975	3.8975	2.7703	2.5313	3.4924	1.5088	2.5342	3.4824	2.8010	2.8010
H2	1.0909		1.7704	1.7704	2.7536	3.4911	3.4911	2.0474	2.7134	3.7926	2.1826	3.4933	4.3298	3.8077	3.8077
H3	1.0969	1.7704		1.7614	3.8988	4.7865	4.4505	3.5066	3.2420	4.1182	2.1508	2.7883	3.7898	2.6070	3.1465
H4	1.0969	1.7704	1.7614		3.8988	4.4505	4.7865	3.5066	3.2420	4.1182	2.1508	2.7883	3.7898	3.1465	2.6070
C5	3.1441	2.7536	3.8988	3.8988		1.0963	1.0963	1.0916	1.5041	2.1926	2.5615	3.9246	4.0987	4.5723	4.5723
H6	3.8975	3.4911	4.7865	4.4505	1.0963		1.7618	1.7680	2.1500	2.5434	3.2666	4.5222	4.5749	5.3245	5.0245
H7	3.8975	3.4911	4.4505	4.7865	1.0963	1.7618		1.7680	2.1500	2.5434	3.2666	4.5222	4.5749	5.0245	5.3245
H8	2.7703	2.0474	3.5066	3.5066	1.0916	1.7680	1.7680		2.1754	3.1078	2.7610	4.2597	4.6796	4.8061	4.8061
C9	2.5313	2.7134	3.2420	3.2420	1.5041	2.1500	2.1500	2.1754		1.0908	1.3408	2.4776	2.5979	3.2040	3.2040
H10	3.4924	3.7926	4.1182	4.1182	2.1926	2.5434	2.5434	3.1078	1.0908		2.0802	2.6299	2.2763	3.3997	3.3997
C11	1.5088	2.1826	2.1508	2.1508	2.5615	3.2666	3.2666	2.7610	1.3408	2.0802		1.5099	2.1654	2.1595	2.1595
C12	2.5342	3.4933	2.7883	2.7883	3.9246	4.5222	4.5222	4.2597	2.4776	2.6299	1.5099		1.0935	1.0972	1.0972
H13	3.4824	4.3298	3.7898	3.7898	4.0987	4.5749	4.5749	4.6796	2.5979	2.2763	2.1654	1.0935		1.7753	1.7753
H14	2.8010	3.8077	2.6070	3.1465	4.5723	5.3245	5.0245	4.8061	3.2040	3.3997	2.1595	1.0972	1.7753		1.7623
H15	2.8010	3.8077	3.1465	2.6070	4.5723	5.0245	5.3245	4.8061	3.2040	3.3997	2.1595	1.0972	1.7753	1.7623

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C11	C9	125.219	C1	C11	C12	114.176
H2	C1	H3	108.036	H2	C1	H4	108.036
H2	C1	C11	113.205	H3	C1	H4	106.808
H3	C1	C11	110.258	H4	C1	C11	110.258
C5	C9	H10	114.406	C5	C9	C11	128.331
H6	C5	H7	106.934	H6	C5	H8	107.811
H6	C5	C9	110.567	H7	C5	H8	107.811
H7	C5	C9	110.567	H8	C5	C9	112.913
C9	C11	C12	120.605	H10	C9	C11	117.263
C11	C12	H13	111.557	C11	C12	H14	110.862
C11	C12	H15	110.862	H13	C12	H14	108.266
H13	C12	H15	108.266	H14	C12	H15	106.857

All results from a given calculation for C₅H₁₀ (2-Butene, 2-methyl-)

using model chemistry: MP3/6-31G*

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

All results from a given calculation for C5H10 (2-Butene, 2-methyl-)

using model chemistry: MP3/6-31G*

States and conformations

All results from a given calculation for C₅H₁₀ (2-Butene, 2-methyl-)