CCCBDB calculation results Page

State	Conformation	minimum conformation	conformer description	state description
1	1	yes	CS	¹A^'

Energy calculated at G2

	hartrees
Energy at 0K	-347.076471
Energy at 298.15K	-347.068923
HF Energy	-345.463254
Nuclear repulsion energy	396.667145

The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.

Vibrational Frequencies calculated at HF/6-31G*

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3413	3215	25.57
2	A'	3387	3192	9.74
3	A'	3385	3189	34.14
4	A'	3371	3176	43.96
5	A'	3359	3164	4.72
6	A'	3351	3157	4.25
7	A'	3202	3017	27.23
8	A'	1822	1717	3.31
9	A'	1802	1698	0.47
10	A'	1768	1666	0.29
11	A'	1637	1542	16.48
12	A'	1626	1532	8.33
13	A'	1599	1507	1.78
14	A'	1509	1422	3.30
15	A'	1458	1374	0.13
16	A'	1380	1300	1.18
17	A'	1356	1277	1.50
18	A'	1314	1238	0.77
19	A'	1279	1205	1.76
20	A'	1232	1160	0.31
21	A'	1225	1155	1.11
22	A'	1180	1112	0.63
23	A'	1118	1054	2.57
24	A'	1020	961	8.43
25	A'	932	878	2.37
26	A'	898	846	2.19
27	A'	791	745	2.89
28	A'	644	607	1.48
29	A'	578	544	0.18
30	A'	413	389	1.21
31	A"	3229	3043	23.39
32	A"	1270	1197	2.03
33	A"	1110	1046	0.11
34	A"	1089	1026	0.24
35	A"	1067	1006	0.84
36	A"	1048	987	9.66
37	A"	978	921	0.05
38	A"	867	817	72.01
39	A"	810	763	9.58
40	A"	779	734	14.79
41	A"	609	574	4.55
42	A"	469	442	7.65
43	A"	431	406	2.86
44	A"	229	216	3.03
45	A"	212	199	0.72

Unscaled Zero Point Vibrational Energy (zpe) 33122.8 cm^-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 31208.3 cm^-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.

Rotational Constants (cm^-1) from geometry optimized at MP2=FULL/6-31G*

A	B	C
0.12617	0.05283	0.03749

See section I.F.4 to change rotational constant units

Geometric Data calculated at MP2=FULL/6-31G*

Point Group is C_s

Cartesians (Å)

Atom	x (Å)	y (Å)	z (Å)
C1	-2.281	-0.016	0.000
C2	-1.852	-1.348	0.000
C3	-0.492	-1.661	0.000
C4	-1.355	1.031	0.000
C5	0.000	0.725	0.000
C6	0.433	-0.616	0.000
C7	1.894	-0.623	0.000
C8	2.352	0.648	0.000
C9	1.207	1.625	0.000
H10	-3.345	0.205	0.000
H11	-2.588	-2.148	0.000
H12	-0.164	-2.699	0.000
H13	-1.697	2.065	0.000
H14	2.505	-1.521	0.000
H15	3.395	0.949	0.000
H16	1.231	2.281	0.880
H17	1.231	2.281	-0.880

Atom - Atom Distances (Å)

	C1	C2	C3	C4	C5	C6	C7	C8	C9	H10	H11	H12	H13	H14	H15	H16	H17
C1		1.3993	2.4299	1.3980	2.3982	2.7789	4.2191	4.6801	3.8545	1.0873	2.1541	3.4169	2.1619	5.0171	5.7569	4.2884	4.2884
C2	1.3993		1.3953	2.4310	2.7798	2.3990	3.8159	4.6537	4.2655	2.1548	1.0873	2.1616	3.4170	4.3607	5.7274	4.8432	4.8432
C3	2.4299	1.3953		2.8275	2.4360	1.3954	2.6024	3.6632	3.6989	3.4093	2.1522	1.0882	3.9161	3.0007	4.6817	4.3918	4.3918
C4	1.3980	2.4310	2.8275		1.3897	2.4312	3.6467	3.7270	2.6301	2.1547	3.4104	3.9157	1.0886	4.6282	4.7506	3.0048	3.0048
C5	2.3982	2.7798	2.4360	1.3897		1.4087	2.3249	2.3531	1.5055	3.3855	3.8670	3.4272	2.1624	3.3645	3.4019	2.1712	2.1712
C6	2.7789	2.3990	1.3954	2.4312	1.4087		1.4618	2.2980	2.3706	3.8661	3.3874	2.1664	3.4239	2.2617	3.3500	3.1317	3.1317
C7	4.2191	3.8159	2.6024	3.6467	2.3249	1.4618		1.3508	2.3504	5.3047	4.7351	2.9231	4.4859	1.0860	2.1731	3.1065	3.1065
C8	4.6801	4.6537	3.6632	3.7270	2.3531	2.2980	1.3508		1.5048	5.7144	5.6767	4.1867	4.2896	2.1743	1.0853	2.1676	2.1676
C9	3.8545	4.2655	3.6989	2.6301	1.5055	2.3706	2.3504	1.5048		4.7685	5.3515	4.5353	2.9371	3.4030	2.2895	1.0985	1.0985
H10	1.0873	2.1548	3.4093	2.1547	3.3855	3.8661	5.3047	5.7144	4.7685		2.4721	4.3072	2.4855	6.1000	6.7808	5.1022	5.1022
H11	2.1541	1.0873	2.1522	3.4104	3.8670	3.3874	4.7351	5.6767	5.3515	2.4721		2.4860	4.3068	5.1322	6.7371	5.9150	5.9150
H12	3.4169	2.1616	1.0882	3.9157	3.4272	2.1664	2.9231	4.1867	4.5353	4.3072	2.4860		5.0043	2.9176	5.0959	5.2462	5.2462
H13	2.1619	3.4170	3.9161	1.0886	2.1624	3.4239	4.4859	4.2896	2.9371	2.4855	4.3068	5.0043		5.5244	5.2123	3.0653	3.0653
H14	5.0171	4.3607	3.0007	4.6282	3.3645	2.2617	1.0860	2.1743	3.4030	6.1000	5.1322	2.9176	5.5244		2.6252	4.1056	4.1056
H15	5.7569	5.7274	4.6817	4.7506	3.4019	3.3500	2.1731	1.0853	2.2895	6.7808	6.7371	5.0959	5.2123	2.6252		2.6887	2.6887
H16	4.2884	4.8432	4.3918	3.0048	2.1712	3.1317	3.1065	2.1676	1.0985	5.1022	5.9150	5.2462	3.0653	4.1056	2.6887		1.7604
H17	4.2884	4.8432	4.3918	3.0048	2.1712	3.1317	3.1065	2.1676	1.0985	5.1022	5.9150	5.2462	3.0653	4.1056	2.6887	1.7604

picture of Indene state 1 conformation 1

More geometry information
Calculated Bond Angles

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C3	120.719	C1	C2	H11	119.566
C1	C4	C5	118.864	C1	C4	H13	120.169
C2	C1	C4	120.574	C2	C1	H10	119.671
C2	C3	C6	118.654	C2	C3	H12	120.440
C3	C2	H11	119.715	C3	C6	C5	120.628
C3	C6	C7	131.243	C4	C1	H10	119.755
C4	C5	C6	120.561	C4	C5	C9	130.661
C5	C4	H13	120.967	C5	C6	C7	108.128
C5	C9	C8	102.365	C5	C9	H16	112.203
C5	C9	H17	112.203	C6	C3	H12	120.905
C6	C5	C9	108.777	C6	C7	C8	109.658
C6	C7	H14	124.389	C7	C8	C9	111.072
C7	C8	H15	125.761	C8	C7	H14	125.953
C8	C9	H16	111.808	C8	C9	H17	111.808
C9	C8	H15	123.167	H16	C9	H17	106.581

Electronic energy levels

Charges, Dipole, Quadrupole and Polarizability

All results from a given calculation for C₉H₈ (Indene)

using model chemistry: G2

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 C9H8 (Indene)

using model chemistry: G2

States and conformations

All results from a given calculation for C₉H₈ (Indene)