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	-411.854049
Energy at 298.15K	-411.861949
HF Energy	-411.854049
Nuclear repulsion energy	406.888073

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3681	3538	94.96
2	A'	3302	3174	0.33
3	A'	3253	3127	9.68
4	A'	3230	3104	8.60
5	A'	1628	1565	56.27
6	A'	1581	1519	47.16
7	A'	1489	1431	37.81
8	A'	1459	1403	4.10
9	A'	1422	1366	31.49
10	A'	1398	1344	23.41
11	A'	1354	1302	35.32
12	A'	1309	1258	33.24
13	A'	1280	1230	5.39
14	A'	1258	1209	71.53
15	A'	1182	1136	4.34
16	A'	1102	1059	11.01
17	A'	1090	1047	15.19
18	A'	936	900	0.45
19	A'	890	856	12.31
20	A'	786	755	10.68
21	A'	655	630	0.16
22	A'	565	543	2.74
23	A'	439	422	15.14
24	A"	992	954	0.62
25	A"	947	910	25.96
26	A"	890	855	7.21
27	A"	830	798	16.86
28	A"	674	648	97.59
29	A"	661	635	64.59
30	A"	622	598	3.59
31	A"	434	417	1.82
32	A"	252	242	3.01
33	A"	231	222	4.75

Atom	x (Å)	y (Å)
N1	-1.834	-1.281
C2	-2.152	0.054
N3	-1.297	1.096
C4	0.000	0.714
C5	0.462	-0.633
C6	-0.534	-1.634
N7	1.864	-0.683
C8	2.220	0.597
N9	1.140	1.494
H10	-3.210	0.285
H11	-0.297	-2.693
H12	3.245	0.933
H13	1.175	2.505

	N1	C2	N3	C4	C5	C6	N7	C8	N9	H10	H11	H12	H13
N1		1.3730	2.4378	2.7104	2.3858	1.3472	3.7464	4.4681	4.0675	2.0852	2.0865	5.5404	4.8365
C2	1.3730		1.3480	2.2510	2.7028	2.3384	4.0835	4.4056	3.5927	1.0827	3.3147	5.4677	4.1322
N3	2.4378	1.3480		1.3523	2.4670	2.8350	3.6280	3.5525	2.4691	2.0775	3.9193	4.5448	2.8452
C4	2.7104	2.2510	1.3523		1.4243	2.4079	2.3299	2.2231	1.3808	3.2383	3.4204	3.2520	2.1419
C5	2.3858	2.7028	2.4670	1.4243		1.4116	1.4032	2.1457	2.2321	3.7849	2.1956	3.1930	3.2183
C6	1.3472	2.3384	2.8350	2.4079	1.4116		2.5795	3.5439	3.5469	3.2931	1.0854	4.5676	4.4777
N7	3.7464	4.0835	3.6280	2.3299	1.4032	2.5795		1.3287	2.2942	5.1657	2.9519	2.1252	3.2622
C8	4.4681	4.4056	3.5525	2.2231	2.1457	3.5439	1.3287		1.4039	5.4387	4.1428	1.0783	2.1758
N9	4.0675	3.5927	2.4691	1.3808	2.2321	3.5469	2.2942	1.4039		4.5142	4.4266	2.1783	1.0123
H10	2.0852	1.0827	2.0775	3.2383	3.7849	3.2931	5.1657	5.4387	4.5142		4.1657	6.4868	4.9144
H11	2.0865	3.3147	3.9193	3.4204	2.1956	1.0854	2.9519	4.1428	4.4266	4.1657		5.0689	5.4029
H12	5.5404	5.4677	4.5448	3.2520	3.1930	4.5676	2.1252	1.0783	2.1783	6.4868	5.0689		2.5995
H13	4.8365	4.1322	2.8452	2.1419	3.2183	4.4777	3.2622	2.1758	1.0123	4.9144	5.4029	2.5995

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
N1	C2	N3	127.251	N1	C2	H10	115.722
N1	C6	C5	119.700	N1	C6	H11	117.725
C2	N1	C6	118.550	C2	N3	C4	112.938
N3	C2	H10	117.027	N3	C4	C5	125.344
N3	C4	N9	129.217	C4	C5	C6	116.218
C4	C5	N7	110.970	C4	N9	C8	105.942
C4	N9	H13	126.343	C5	C4	N9	105.439
C5	C6	H11	122.575	C5	N7	C8	103.482
C6	C5	N7	132.812	N7	C8	N9	114.166
N7	C8	H12	123.670	C8	N9	H13	127.715
N9	C8	H12	122.164

All results from a given calculation for C₅H₄N₄ (purine)

using model chemistry: B3LYP/LANL2DZ

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	N	-0.020
2	C	-0.326
3	N	-0.010
4	C	0.094
5	C	0.081
6	C	-0.296
7	N	-0.070
8	C	-0.201
9	N	-0.369
10	H	0.249
11	H	0.260
12	H	0.269
13	H	0.338

	x	y	z	Total
	2.332	3.152	0.000	3.920
CHELPG
AIM
ESP

	x	y	z
x	14.986	1.423	0.000
y	1.423	11.630	0.000
z	0.000	0.000	4.680

<r²>	261.275
(<r²>)^1/2	16.164

All results from a given calculation for C5H4N4 (purine)

using model chemistry: B3LYP/LANL2DZ

States and conformations

All results from a given calculation for C₅H₄N₄ (purine)