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	C2H	¹A_g
1	2	no	C2	¹A

	hartrees
Energy at 0K	-104.534830
Energy at 298.15K	-104.544967
HF Energy	-104.299268
Nuclear repulsion energy	84.100110

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A_g	3116	3008	0.00
2	A_g	1513	1461	0.00
3	A_g	1354	1307	0.00
4	A_g	1063	1026	0.00
5	A_g	667	644	0.00
6	A_g	182	176	0.00
7	A_u	3219	3107	9.42
8	A_u	1142	1103	5.33
9	A_u	794	767	7.86
10	A_u	104	100	4.18
11	B_g	3200	3089	0.00
12	B_g	1320	1275	0.00
13	B_g	979	945	0.00
14	B_u	3122	3014	23.46
15	B_u	1501	1449	6.31
16	B_u	1292	1247	66.10
17	B_u	580	560	48.18
18	B_u	175	169	6.32

Atom	x (Å)	y (Å)	z (Å)
C1	0.507	0.578	0.000
C2	-0.507	-0.578	0.000
Br3	-0.507	2.340	0.000
Br4	0.507	-2.340	0.000
H5	1.130	0.588	0.904
H6	1.130	0.588	-0.904
H7	-1.130	-0.588	0.904
H8	-1.130	-0.588	-0.904

	C1	C2	Br3	Br4	H5	H6	H7	H8
C1		1.5371	2.0330	2.9175	1.0981	1.0981	2.2032	2.2032
C2	1.5371		2.9175	2.0330	2.2032	2.2032	1.0981	1.0981
Br3	2.0330	2.9175		4.7882	2.5626	2.5626	3.1265	3.1265
Br4	2.9175	2.0330	4.7882		3.1265	3.1265	2.5626	2.5626
H5	1.0981	2.2032	2.5626	3.1265		1.8086	2.5468	3.1237
H6	1.0981	2.2032	2.5626	3.1265	1.8086		3.1237	2.5468
H7	2.2032	1.0981	3.1265	2.5626	2.5468	3.1237		1.8086
H8	2.2032	1.0981	3.1265	2.5626	3.1237	2.5468	1.8086

All results from a given calculation for CH₂BrCH₂Br (Ethane, 1,2-dibromo-)

using model chemistry: MP2/SDD

States and conformations

Conformer 1 (C2H)

Conformer 2 (C2)

	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	Br4	108.816	C1	C2	H7	112.387
C1	C2	H8	112.387	C2	C1	Br3	108.816
C2	C1	H5	112.387	C2	C1	H6	112.387
Br3	C1	H5	105.966	Br3	C1	H6	105.966
Br4	C2	H7	105.966	Br4	C2	H8	105.966
H5	C1	H6	110.882	H7	C2	H8	110.882

	hartrees
Energy at 0K	-104.531487
Energy at 298.15K
HF Energy	-104.294591
Nuclear repulsion energy	84.962162

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)	Raman Act (Å⁴/u)	Dep P	Dep U
1	A	3180	3069	1.14	100.86	0.74	0.85
2	A	3097	2990	36.10	248.97	0.01	0.02
3	A	1486	1435	0.35	8.44	0.67	0.80
4	A	1361	1314	21.21	8.01	0.39	0.56
5	A	1218	1175	1.97	19.97	0.75	0.85
6	A	1054	1018	0.72	4.58	0.75	0.86
7	A	948	915	9.02	16.49	0.39	0.56
8	A	537	518	5.61	25.26	0.10	0.19
9	A	226	218	1.11	3.30	0.56	0.72
10	A	79	76	0.22	3.83	0.74	0.85
11	B	3190	3079	8.42	32.15	0.75	0.86
12	B	3090	2982	7.28	52.12	0.75	0.86
13	B	1479	1428	8.25	19.21	0.75	0.86
14	B	1359	1312	66.20	4.39	0.75	0.86
15	B	1150	1110	4.49	6.57	0.75	0.86
16	B	887	856	24.26	1.21	0.75	0.86
17	B	579	559	12.59	21.95	0.75	0.86
18	B	348	336	4.98	5.81	0.75	0.86

Atom	x (Å)	y (Å)	z (Å)
C1	0.326	0.697	1.217
C2	-0.326	-0.697	1.217
Br3	-0.326	1.863	-0.301
Br4	0.326	-1.863	-0.301
H5	0.045	1.237	2.135
H6	1.419	0.645	1.117
H7	-0.045	-1.237	2.135
H8	-1.419	-0.645	1.117

	C1	C2	Br3	Br4	H5	H6	H7	H8
C1		1.5398	2.0218	2.9763	1.1014	1.0988	2.1730	2.2039
C2	1.5398		2.9763	2.0218	2.1730	2.2039	1.1014	1.0988
Br3	2.0218	2.9763		3.7820	2.5430	2.5578	3.9523	3.0814
Br4	2.9763	2.0218	3.7820		3.9523	3.0814	2.5430	2.5578
H5	1.1014	2.1730	2.5430	3.9523		1.8093	2.4748	2.5922
H6	1.0988	2.2039	2.5578	3.0814	1.8093		2.5922	3.1175
H7	2.1730	1.1014	3.9523	2.5430	2.4748	2.5922		1.8093
H8	2.2039	1.0988	3.0814	2.5578	2.5922	3.1175	1.8093

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	Br4	112.672	C1	C2	H7	109.599
C1	C2	H8	112.202	C2	C1	Br3	112.672
C2	C1	H5	109.599	C2	C1	H6	112.202
Br3	C1	H5	105.176	Br3	C1	H6	106.307
Br4	C2	H7	105.176	Br4	C2	H8	106.307
H5	C1	H6	110.631	H7	C2	H8	110.631

All results from a given calculation for CH2BrCH2Br (Ethane, 1,2-dibromo-)

using model chemistry: MP2/SDD

States and conformations

Conformer 1 (C2H)

Conformer 2 (C2)

All results from a given calculation for CH₂BrCH₂Br (Ethane, 1,2-dibromo-)