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	-157.039469
Energy at 298.15K	-157.048080
HF Energy	-156.856389
Nuclear repulsion energy	124.153892

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3241	3241	36.49
2	A'	3162	3162	22.22
3	A'	3151	3151	17.42
4	A'	3114	3114	24.27
5	A'	3047	3047	37.60
6	A'	1542	1542	0.87
7	A'	1534	1534	10.74
8	A'	1454	1454	4.47
9	A'	1419	1419	1.64
10	A'	1250	1250	0.03
11	A'	1228	1228	0.02
12	A'	1065	1065	9.72
13	A'	1011	1011	9.08
14	A'	957	957	3.44
15	A'	808	808	3.76
16	A'	779	779	4.36
17	A'	368	368	0.20
18	A"	3226	3226	0.30
19	A"	3145	3145	29.36
20	A"	3112	3112	36.80
21	A"	1527	1527	2.76
22	A"	1496	1496	3.52
23	A"	1217	1217	0.76
24	A"	1159	1159	0.02
25	A"	1127	1127	4.36
26	A"	1078	1078	1.81
27	A"	879	879	8.16
28	A"	836	836	6.10
29	A"	346	346	0.73
30	A"	223	223	0.00

Atom	x (Å)	y (Å)	z (Å)
C1	0.347	0.404	0.000
C2	-0.881	1.284	0.000
H3	1.290	0.941	0.000
C4	0.347	-0.901	0.756
C5	0.347	-0.901	-0.756
H6	1.252	-1.204	1.267
H7	1.252	-1.204	-1.267
H8	-0.568	-1.190	1.260
H9	-0.568	-1.190	-1.260
H10	-1.793	0.681	0.000
H11	-0.910	1.927	0.884
H12	-0.910	1.927	-0.884

	C1	C2	H3	C4	C5	H6	H7	H8	H9	H10	H11	H12
C1		1.5103	1.0860	1.5079	1.5079	2.2386	2.2386	2.2281	2.2281	2.1574	2.1632	2.1632
C2	1.5103		2.1981	2.6176	2.6176	3.5136	3.5136	2.7936	2.7936	1.0932	1.0933	1.0933
H3	1.0860	2.1981		2.2033	2.2033	2.4919	2.4919	3.0956	3.0956	3.0942	2.5679	2.5679
C4	1.5079	2.6176	2.2033		1.5115	1.0831	2.2371	1.0840	2.2327	2.7662	3.0970	3.5019
C5	1.5079	2.6176	2.2033	1.5115		2.2371	1.0831	2.2327	1.0840	2.7662	3.5019	3.0970
H6	2.2386	3.5136	2.4919	1.0831	2.2371		2.5349	1.8202	3.1149	3.7988	3.8240	4.3708
H7	2.2386	3.5136	2.4919	2.2371	1.0831	2.5349		3.1149	1.8202	3.7988	4.3708	3.8240
H8	2.2281	2.7936	3.0956	1.0840	2.2327	1.8202	3.1149		2.5207	2.5667	3.1575	3.7982
H9	2.2281	2.7936	3.0956	2.2327	1.0840	3.1149	1.8202	2.5207		2.5667	3.7982	3.1575
H10	2.1574	1.0932	3.0942	2.7662	2.7662	3.7988	3.7988	2.5667	2.5667		1.7642	1.7642
H11	2.1632	1.0933	2.5679	3.0970	3.5019	3.8240	4.3708	3.1575	3.7982	1.7642		1.7678
H12	2.1632	1.0933	2.5679	3.5019	3.0970	4.3708	3.8240	3.7982	3.1575	1.7642	1.7678

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	H10	110.900	C1	C2	H11	111.359
C1	C2	H12	111.359	C1	C4	H5	59.921
C1	C4	H6	118.623	C1	C4	H8	117.624
C1	H5	C4	59.921	C1	H5	H7	118.623
C1	H5	H9	117.624	C2	C1	C3	114.712
C2	C1	C4	120.282	C2	C1	H5	120.282
C3	C1	C4	115.342	C3	C1	H5	115.342
C4	C1	H5	60.158	C4	H5	H7	118.193
C4	H5	H9	117.744	H5	C4	H6	118.193
H5	C4	H8	117.744	H6	C4	H8	114.263
H7	H5	H9	114.263	H10	C2	H11	107.577
H10	C2	H12	107.577	H11	C2	H12	107.889

All results from a given calculation for C₄H₈ (methylcyclopropane)

using model chemistry: B2PLYP/6-311G*

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	-0.205
2	C	-0.625
3	H	0.207
4	C	-0.436
5	C	-0.436
6	H	0.219
7	H	0.219
8	H	0.216
9	H	0.216
10	H	0.200
11	H	0.213
12	H	0.213

	x	y	z	Total
	0.045	0.111	0.000	0.119
CHELPG
AIM
ESP

	x	y	z
x	6.157	-0.444	0.000
y	-0.444	6.767	0.000
z	0.000	0.000	6.291

<r²>	83.886
(<r²>)^1/2	9.159

All results from a given calculation for C4H8 (methylcyclopropane)

using model chemistry: B2PLYP/6-311G*

States and conformations

All results from a given calculation for C₄H₈ (methylcyclopropane)