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

State	Conformation	minimum conformation	conformer description	state description
1	1	yes	CS trans	¹A^'
1	2	no	CS cis	¹A^'

	hartrees
Energy at 0K	-191.097496
Energy at 298.15K
HF Energy	-190.672330
Nuclear repulsion energy	101.195935

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3212	3095	14.69
2	A'	3158	3043	2.31
3	A'	3118	3004	7.88
4	A'	2944	2836	82.20
5	A'	1693	1632	44.29
6	A'	1634	1575	75.22
7	A'	1482	1428	1.51
8	A'	1415	1363	4.17
9	A'	1322	1274	1.53
10	A'	1195	1151	25.84
11	A'	940	906	21.59
12	A'	567	546	5.76
13	A'	322	311	10.61
14	A"	1001	965	31.10
15	A"	984	948	2.15
16	A"	973	938	31.00
17	A"	590	569	11.78
18	A"	156	150	6.57

Atom	x (Å)	y (Å)
C1	-0.130	-0.759
C2	0.000	0.723
C3	1.215	1.326
O4	-1.234	-1.358
H5	0.821	-1.333
H6	-0.932	1.295
H7	1.329	2.412
H8	2.144	0.745

	C1	C2	C3	O4	H5	H6	H7	H8
C1		1.4871	2.4809	1.2565	1.1109	2.2051	3.4897	2.7255
C2	1.4871		1.3567	2.4190	2.2136	1.0940	2.1489	2.1439
C3	2.4809	1.3567		3.6334	2.6879	2.1478	1.0917	1.0955
O4	1.2565	2.4190	3.6334		2.0557	2.6699	4.5581	3.9787
H5	1.1109	2.2136	2.6879	2.0557		3.1594	3.7788	2.4626
H6	2.2051	1.0940	2.1478	2.6699	3.1594		2.5216	3.1250
H7	3.4897	2.1489	1.0917	4.5581	3.7788	2.5216		1.8558
H8	2.7255	2.1439	1.0955	3.9787	2.4626	3.1250	1.8558

All results from a given calculation for CH₂CHCHO (Acrolein)

using model chemistry: QCISD/6-31G

States and conformations

Conformer 1 (CS trans)

Conformer 2 (CS cis)

	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

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C3	121.403	C1	C2	H6	116.541
C2	C1	O4	123.476	C2	C1	H5	116.115
C2	C3	H7	122.353	C2	C3	H8	121.548
C3	C2	H6	122.056	O4	C1	H5	120.409
H7	C3	H8	116.098

	hartrees
Energy at 0K	-191.095765
Energy at 298.15K
HF Energy	-190.670420
Nuclear repulsion energy	102.756850

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3222	3105	8.46
2	A'	3147	3033	10.76
3	A'	3128	3014	8.40
4	A'	2975	2867	113.71
5	A'	1687	1626	5.93
6	A'	1625	1566	75.35
7	A'	1478	1424	26.85
8	A'	1435	1383	5.24
9	A'	1339	1290	2.22
10	A'	1098	1058	5.94
11	A'	940	905	52.37
12	A'	685	660	10.13
13	A'	292	281	8.37
14	A"	1001	965	52.52
15	A"	991	955	2.67
16	A"	973	938	2.21
17	A"	559	539	11.03
18	A"	157	151	8.72

Atom	x (Å)	y (Å)
C1	-0.908	-0.279
C2	0.000	0.910
C3	1.351	0.783
O4	-0.502	-1.469
H5	-1.995	-0.068
H6	-0.480	1.894
H7	2.016	1.649
H8	1.819	-0.205

	C1	C2	C3	O4	H5	H6	H7	H8
C1		1.4958	2.4956	1.2581	1.1076	2.2142	3.5019	2.7276
C2	1.4958		1.3568	2.4320	2.2224	1.0948	2.1469	2.1336
C3	2.4956	1.3568		2.9164	3.4527	2.1418	1.0920	1.0935
O4	1.2581	2.4320	2.9164		2.0477	3.3634	4.0079	2.6426
H5	1.1076	2.2224	3.4527	2.0477		2.4791	4.3633	3.8165
H6	2.2142	1.0948	2.1418	3.3634	2.4791		2.5082	3.1133
H7	3.5019	2.1469	1.0920	4.0079	4.3633	2.5082		1.8648
H8	2.7276	2.1336	1.0935	2.6426	3.8165	3.1133	1.8648

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C3	121.986	C1	C2	H6	116.605
C2	C1	O4	123.806	C2	C1	H5	116.433
C2	C3	H7	122.136	C2	C3	H8	120.722
C3	C2	H6	121.409	O4	C1	H5	119.761
H7	C3	H8	117.142

All results from a given calculation for CH2CHCHO (Acrolein)

using model chemistry: QCISD/6-31G

States and conformations

Conformer 1 (CS trans)

Conformer 2 (CS cis)

All results from a given calculation for CH₂CHCHO (Acrolein)