CCCBDB calculation results Page

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

Energy calculated at HF/6-31G(2df,p)

	hartrees
Energy at 0K	-345.497232
Energy at 298.15K	-345.506256
HF Energy	-345.497232
Nuclear repulsion energy	397.204638

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(2df,p)

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3373	3054	23.47
2	A'	3348	3032	29.76
3	A'	3347	3030	7.76
4	A'	3334	3019	39.52
5	A'	3321	3007	4.60
6	A'	3313	3000	3.59
7	A'	3166	2866	27.46
8	A'	1806	1635	3.22
9	A'	1787	1618	0.54
10	A'	1753	1588	0.35
11	A'	1620	1467	17.18
12	A'	1610	1457	8.59
13	A'	1572	1424	2.43
14	A'	1493	1352	3.77
15	A'	1442	1305	0.17
16	A'	1367	1238	1.34
17	A'	1341	1214	1.29
18	A'	1299	1176	0.91
19	A'	1267	1147	1.71
20	A'	1219	1103	0.07
21	A'	1208	1094	1.79
22	A'	1169	1058	0.56
23	A'	1108	1004	2.62
24	A'	1010	914	8.41
25	A'	926	838	2.74
26	A'	892	808	2.26
27	A'	786	712	2.96
28	A'	642	581	1.30
29	A'	574	520	0.15
30	A'	411	372	1.08
31	A"	3194	2892	20.11
32	A"	1255	1136	1.86
33	A"	1092	989	0.11
34	A"	1084	982	0.11
35	A"	1061	961	1.98
36	A"	1038	940	6.98
37	A"	976	884	0.01
38	A"	870	788	56.13
39	A"	813	736	11.92
40	A"	786	711	11.57
41	A"	611	553	3.81
42	A"	470	426	6.77
43	A"	432	391	2.28
44	A"	230	209	2.61
45	A"	213	193	0.58

Unscaled Zero Point Vibrational Energy (zpe) 32811.5 cm^-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 29710.8 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 HF/6-31G(2df,p)

A	B	C
0.12830	0.05329	0.03791

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

Geometric Data calculated at HF/6-31G(2df,p)

Point Group is C_s

Cartesians (Å)

Atom	x (Å)	y (Å)	z (Å)
C1	-2.269	-0.001	0.000
C2	-1.855	-1.322	0.000
C3	-0.506	-1.641	0.000
C4	-1.339	1.031	0.000
C5	0.000	0.718	0.000
C6	0.416	-0.613	0.000
C7	1.888	-0.630	0.000
C8	2.348	0.612	0.000
C9	1.217	1.612	0.000
H10	-3.320	0.228	0.000
H11	-2.589	-2.108	0.000
H12	-0.189	-2.669	0.000
H13	-1.669	2.056	0.000
H14	2.482	-1.525	0.000
H15	3.382	0.901	0.000
H16	1.251	2.261	0.874
H17	1.251	2.261	-0.874

Atom - Atom Distances (Å)

	C1	C2	C3	C4	C5	C6	C7	C8	C9	H10	H11	H12	H13	H14	H15	H16	H17
C1		1.3837	2.4077	1.3891	2.3801	2.7540	4.2047	4.6577	3.8410	1.0756	2.1312	3.3829	2.1424	4.9896	5.7228	4.2742	4.2742
C2	1.3837		1.3868	2.4084	2.7570	2.3793	3.8070	4.6269	4.2480	2.1321	1.0758	2.1430	3.3823	4.3422	5.6897	4.8213	4.8213
C3	2.4077	1.3868		2.7983	2.4118	1.3801	2.5985	3.6357	3.6808	3.3780	2.1353	1.0761	3.8749	2.9900	4.6450	4.3667	4.3667
C4	1.3891	2.4084	2.7983		1.3752	2.4050	3.6298	3.7110	2.6212	2.1374	3.3788	3.8744	1.0766	4.5973	4.7231	2.9974	2.9974
C5	2.3801	2.7570	2.4118	1.3752		1.3946	2.3201	2.3505	1.5103	3.3558	3.8327	3.3919	2.1390	3.3454	3.3872	2.1700	2.1700
C6	2.7540	2.3793	1.3801	2.4050	1.3946		1.4724	2.2879	2.3654	3.8295	3.3565	2.1428	3.3869	2.2583	3.3304	3.1177	3.1177
C7	4.2047	3.8070	2.5985	3.6298	2.3201	1.4724		1.3246	2.3410	5.2785	4.7152	2.9106	4.4574	1.0741	2.1393	3.0864	3.0864
C8	4.6577	4.6269	3.6357	3.7110	2.3505	2.2879	1.3246		1.5102	5.6811	5.6371	4.1475	4.2686	2.1416	1.0738	2.1644	2.1644
C9	3.8410	4.2480	3.6808	2.6212	1.5103	2.3654	2.3410	1.5102		4.7432	5.3224	4.5062	2.9195	3.3832	2.2794	1.0884	1.0884
H10	1.0756	2.1321	3.3780	2.1374	3.3558	3.8295	5.2785	5.6811	4.7432		2.4476	4.2655	2.4630	6.0611	6.7359	5.0783	5.0783
H11	2.1312	1.0758	2.1353	3.3788	3.8327	3.3565	4.7152	5.6371	5.3224	2.4476		2.4649	4.2642	5.1047	6.6869	5.8819	5.8819
H12	3.3829	2.1430	1.0761	3.8744	3.3919	2.1428	2.9106	4.1475	4.5062	4.2655	2.4649		4.9509	2.9056	5.0496	5.2093	5.2093
H13	2.1424	3.3823	3.8749	1.0766	2.1390	3.3869	4.4574	4.2686	2.9195	2.4630	4.2642	4.9509		5.4822	5.1815	3.0548	3.0548
H14	4.9896	4.3422	2.9900	4.5973	3.3454	2.2583	1.0741	2.1416	3.3832	6.0611	5.1047	2.9056	5.4822		2.5880	4.0757	4.0757
H15	5.7228	5.6897	4.6450	4.7231	3.3872	3.3304	2.1393	1.0738	2.2794	6.7359	6.6869	5.0496	5.1815	2.5880		2.6746	2.6746
H16	4.2742	4.8213	4.3667	2.9974	2.1700	3.1177	3.0864	2.1644	1.0884	5.0783	5.8819	5.2093	3.0548	4.0757	2.6746		1.7473
H17	4.2742	4.8213	4.3667	2.9974	2.1700	3.1177	3.0864	2.1644	1.0884	5.0783	5.8819	5.2093	3.0548	4.0757	2.6746	1.7473

picture of Indene state 1 conformation 1

More geometry information
Calculated Bond Angles

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C3	120.689	C1	C2	H11	119.594
C1	C4	C5	118.860	C1	C4	H13	120.134
C2	C1	C4	120.586	C2	C1	H10	119.684
C2	C3	C6	118.609	C2	C3	H12	120.416
C3	C2	H11	119.717	C3	C6	C5	120.735
C3	C6	C7	131.248	C4	C1	H10	119.730
C4	C5	C6	120.522	C4	C5	C9	130.510
C5	C4	H13	121.006	C5	C6	C7	108.017
C5	C9	C8	102.191	C5	C9	H16	112.223
C5	C9	H17	112.223	C6	C3	H12	120.976
C6	C5	C9	108.968	C6	C7	C8	109.654
C6	C7	H14	124.215	C7	C8	C9	111.170
C7	C8	H15	125.928	C8	C7	H14	126.131
C8	C9	H16	111.767	C8	C9	H17	111.767
C9	C8	H15	122.901	H16	C9	H17	106.779

Electronic energy levels

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)

Number	Element	Mulliken
1	C	-0.160
2	C	-0.147
3	C	-0.257
4	C	-0.241
5	C	0.147
6	C	0.167
7	C	-0.175
8	C	-0.167
9	C	-0.332
10	H	0.142
11	H	0.143
12	H	0.142
13	H	0.141
14	H	0.149
15	H	0.149
16	H	0.150
17	H	0.150

Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)

	x	y	z	Total
	0.455	0.420	0.000	0.619
CHELPG
AIM
ESP

Electric Quadrupole moment
Quadrupole components in D Å

Primitive
	x	y	z
x	-47.505	0.440	0.000
y	0.440	-46.569	0.000
z	0.000	0.000	-56.470

Traceless
	x	y	z
x	4.015	0.440	0.000
y	0.440	5.418	0.000
z	0.000	0.000	-9.433

Polar
3z²-r²	-18.866
x²-y²	-0.936
xy	0.440
xz	0.000
yz	0.000

Polarizabilities
Components of the polarizability tensor.
Units are Å³ (Angstrom cubed)
Change units.

	x	y	z
x	16.786	1.579	0.000
y	1.579	14.891	0.000
z	0.000	0.000	6.142

<r²> (average value of r²) Å²

<r²>	290.167
(<r²>)^1/2	17.034

All results from a given calculation for C₉H₈ (Indene)

using model chemistry: HF/6-31G(2df,p)

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: HF/6-31G(2df,p)

States and conformations

All results from a given calculation for C₉H₈ (Indene)