National Institute of Standards and Technology

Computational Chemistry Comparison and Benchmark DataBase
Release 22	May 2022
NIST Standard Reference Database 101

I	Introduction
II	Experimental data
III	Calculated data
IV	Data comparisons
V	Cost comparisons
VI	Input and output files
VII	Tutorials and Units
VIII	Links to other sites
IX	Feedback
X	Older CCCBDB versions
XII	Geometries
XIII	Vibrations
XIV	Reaction data
XV	Entropy data
XVI	Bibliographic data
XVII	Ion data
XVIII	Bad calculations
XIX	Index of properties
XX	H-bond dimers
XXI	Oddities

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IV.D.8.

Average Bond Length Differences by Model Chemistry

Calculated at CCSD(T)/cc-pVTZ

Species	Name	Bond type	Bond Length (Å)
			Experimental	unc.	Calculated	Difference	atom1	atom2
Si2	Silicon diatomic	rSiSi	2.246		2.180	-0.066	1	2
C2Cl2	dichloroacetylene	rC#C	1.246	±0.030	1.209	-0.037	1	2
C2H2O2	Ethanedial	rCH	1.132		1.103	-0.029	1	3
CH3CH2CH2CH3	Butane	rCH	1.117		1.096	-0.021	1	5
CH3OCl	methyl hypochlorite	rCH	1.111	±0.018	1.090	-0.021	3	4
LiOH	lithium hydroxide	rOH	0.969		0.950	-0.019	1	3
FNO2	Nitryl fluoride	rNF	1.467	±0.015	1.450	-0.017	1	2
AsF5	Arsenic pentafluoride	rAsF	1.711	±0.005	1.695	-0.016	1	5
HeH+	Helium hydride cation	rHHe	0.790		0.776	-0.014	1	2
H2Cl+	dihydrogen monochloride cation	rHCl	1.321	±0.000	1.307	-0.014	1	2
HF+	hydrogen fluoride cation	rHF	1.014		1.002	-0.013	1	2
CH3CH2CHO	Propanal	rCH	1.103		1.090	-0.013	1	6
AsH	Arsenic monohydride	rAsH	1.535	±0.001	1.522	-0.013	1	2
B2H6	Diborane	rBH	1.200		1.188	-0.012	1	5
HSe	Selenium monohydride	rSeH	1.475	±0.010	1.464	-0.012	1	2
ArH+	Argon hydride cation	rArH	1.292	±0.000	1.281	-0.011	1	2
N2O3	Dinitrogen trioxide	rN=O	1.217		1.206	-0.011	2	5
CH2NH	Methanimine	rCH	1.103		1.092	-0.011	1	3
CH3CH2CHO	Propanal	rCH	1.105		1.096	-0.009	2	8
HClO4	perchloric acid	rOH	0.980		0.972	-0.008	3	6
HOCl	hypochlorous acid	rOH	0.973	±0.002	0.965	-0.008	1	2
SiH2Cl2	dichlorosilane	rSiH	1.480	±0.015	1.472	-0.008	1	2
HCCl	Chloromethylene	rCH	1.119	±0.036	1.111	-0.008	1	3
CH3CH2CHO	Propanal	rCH	1.115		1.108	-0.007	3	10
CH2PH	Phosphaethene	rCH	1.090	±0.015	1.083	-0.007	1	3
CH2	Methylene	rCH	1.085		1.078	-0.007	1	2
CH3CHO	Acetaldehyde	rCH	1.114		1.108	-0.006	1	4
NH4+	ammonium cation	rHN	1.029	±0.000	1.023	-0.006	1	2
NH2F	monofluoroamine	rNF	1.433		1.427	-0.006	1	2
HS+	sulfur monohydride cation	rSH	1.374		1.368	-0.006	1	2
C2H2O2	Ethanedial	rCC	1.526		1.520	-0.006	1	2
H2CSe	Selenoformaldehyde	rHC	1.090		1.085	-0.006	1	3
CH2PH	Phosphaethene	rCH	1.090	±0.015	1.085	-0.005	1	4
CH3CH2CHO	Propanal	rCH	1.096		1.091	-0.005	1	5
B2H6	Diborane	rBH	1.320		1.315	-0.005	1	3
CH3CCH	propyne	rCH	1.096		1.091	-0.005	1	5
KrH+	Protonated Krypton	rHKr	1.421	±0.000	1.416	-0.005	1	2
CH2CO	Ketene	rCH	1.083		1.078	-0.005	1	4
C2H	Ethynyl radical	rC#C	1.217		1.212	-0.005	1	2
CH3NH2	methyl amine	rNH	1.018	±0.001	1.014	-0.005	2	6
CHF3	Methane, trifluoro-	rCH	1.091	±0.014	1.087	-0.004	1	2
CH3NO	nitrosomethane	rCH	1.094		1.090	-0.004	1	4
CH3OC2H5	Ethane, methoxy-	rCO	1.415	±0.005	1.411	-0.004	1	2
C5H6	Propellane	rCC	1.525	±0.002	1.521	-0.004	1	2
CH3CH2SH	ethanethiol	rCH	1.095		1.092	-0.003	1	4
HBr+	hydrogen bromide cation	rHBr	1.448		1.445	-0.003	1	2
CH2CHCH2CH3	1-Butene	rCC	1.536		1.533	-0.003	1	2
CH3CHFCH3	2-Fluoropropane	rCH	1.093	±0.006	1.090	-0.003	4	8
CH3NH2	methyl amine	rCN	1.471	±0.003	1.469	-0.002	1	2
GeH	germylidene	rGeH	1.588		1.586	-0.002	1	2
CH3CH2CH2CH3	Butane	rCC	1.531		1.529	-0.002	1	2
CH3CHFCH3	2-Fluoropropane	rCH	1.094	±0.005	1.092	-0.002	4	10
CBr4	Carbon tetrabromide	rCBr	1.942	±0.002	1.940	-0.002	1	2
C3H6	Cyclopropane	rCH	1.083		1.081	-0.002	1	4
H2Se	Hydrogen selenide	rSeH	1.460		1.458	-0.002	1	2
C5H6	Propellane	rCC	1.596	±0.005	1.594	-0.002	2	5
C4H8	cyclobutane	rCH	1.093		1.092	-0.001	1	5
C2H2ClF	1-chloro-1-fluoroethylene	rCH	1.082	±0.001	1.081	-0.001	2	5
CH2Cl2	Methylene chloride	rCH	1.085	±0.002	1.084	-0.001	1	2
CH3CHClCH3	Propane, 2-chloro-	rCH	1.091		1.090	-0.001	2	5
HBr	hydrogen bromide	rHBr	1.414	±0.000	1.413	-0.001	1	2
CH3OC2H5	Ethane, methoxy-	rCH	1.099	±0.007	1.098	-0.001	1	6
AsH3	Arsine	rAsH	1.511	±0.000	1.510	-0.001	1	2
CH3OC2H5	Ethane, methoxy-	rCH	1.092	±0.007	1.091	-0.001	4	11
He2+	helium diatomic cation	rHeHe	1.081	±0.001	1.080	-0.001	1	2
HSiCl	Chlorosilylene	rSiH	1.525	±0.005	1.524	-0.001	1	3
C4H8	cyclobutane	rCH	1.091		1.090	-0.001	1	6
CH3NO	nitrosomethane	rCH	1.092		1.091	-0.001	1	5
NO	Nitric oxide	rN=O	1.154	±0.000	1.153	-0.001	1	2
NH2SH	Thiohydroxylamine	rSH	1.344	±0.029	1.343	-0.001	2	3
C3H3NO	Oxazole	rCO	1.357	±0.003	1.357	-0.001	1	2
CH3CH2SH	ethanethiol	rCH	1.092		1.092	0.000	1	5
C3H4	cyclopropene	rCH	1.088		1.088	0.000	1	6
CH3OC2H5	Ethane, methoxy-	rCH	1.100	±0.003	1.100	0.000	3	8
CH3CH2SH	ethanethiol	rCH	1.090		1.090	0.000	2	7
HNO3	Nitric acid	rNO	1.406		1.406	0.000	1	2
CH2CHF	Ethene, fluoro-	rCH	1.082		1.082	0.000	1	4
DF	Hydrofluoric acid-d	rDF	0.917	±0.000	0.917	0.000	1	2
ClO	Monochlorine monoxide	rClO	1.596	±0.001	1.596	0.000	1	2
AsF3	Arsenic trifluoride	rAsF	1.706	±0.002	1.706	0.000	1	2
CH3CH2CHO	Propanal	rCC	1.523		1.523	0.000	1	2
CH2NN	diazomethane	rCH	1.075		1.075	0.000	1	4
HF	Hydrogen fluoride	rHF	0.917	±0.000	0.917	0.000	1	2
CH3CH2CHO	Propanal	rCC	1.509		1.509	0.000	2	3
OCSe	Carbonyl selenide	rC=O	1.159		1.159	0.000	1	2
C2H2	Acetylene	rCH	1.063		1.064	0.001	1	3
HO2	Hydroperoxy radical	rOH	0.971		0.971	0.001	1	3
BH3	boron trihydride	rBH	1.190		1.191	0.001	1	2
C3H3NO	Oxazole	rCH	1.075	±0.001	1.076	0.001	4	7
D2	Deuterium diatomic	rDD	0.742		0.743	0.001	1	2
H2	Hydrogen diatomic	rHH	0.741		0.743	0.001	1	2
HD	Deuterium hydride	rDH	0.741		0.743	0.001	1	2
C3H3NO	Oxazole	rCH	1.073	±0.001	1.075	0.001	5	8
CH3CHClCH3	Propane, 2-chloro-	rCH	1.092		1.093	0.001	3	6
GaF	Gallium monofluoride	rFGa	1.774	±0.000	1.776	0.001	1	2
CH3CHFCH3	2-Fluoropropane	rCH	1.092		1.094	0.002	1	3
C3H3NO	Oxazole	rCH	1.075	±0.001	1.077	0.002	2	6
H2O	Water	rOH	0.958	±0.000	0.959	0.002	1	2
DO	Hydroxyl-d	rDO	0.970		0.971	0.002	1	2
GeH3F	monofluorogermane	rGeF	1.731	±0.000	1.733	0.002	1	2
OH	Hydroxyl radical	rOH	0.970		0.971	0.002	1	2
CF	Fluoromethylidyne	rCF	1.276		1.278	0.002	1	2
CH4	Methane	rCH	1.087	±0.001	1.089	0.002	1	2
SiH3F	monofluorosilane	rSiH	1.476		1.478	0.002	1	3
N3	azide radical	rNN	1.181		1.183	0.002	1	2
C2H2+	acetylene cation	rC=C	1.253	±0.001	1.255	0.002	1	2
GaBr	Gallium monobromide	rGaBr	2.352	±0.000	2.355	0.002	1	2
HOBr	Hypobromous acid	rBrO	1.834		1.836	0.002	2	3
FO	Oxygen monofluoride	rFO	1.354		1.356	0.002	1	2
GeF	Germanium monofluoride	rFGe	1.745		1.747	0.002	1	2
CH3CHO	Acetaldehyde	rCH	1.086		1.088	0.002	2	5
CH2NN	diazomethane	rC=N	1.300		1.302	0.002	1	2
CH3Br	methyl bromide	rCH	1.082	±0.001	1.085	0.003	1	3
DCl	Hydrochloric acid-d	rDCl	1.275	±0.000	1.277	0.003	1	2
SiH3Cl	chlorosilane	rSiH	1.475		1.478	0.003	1	3
HCl	Hydrogen chloride	rHCl	1.275	±0.000	1.277	0.003	1	2
AsF	Arsenic monofluoride	rFAs	1.736	±0.001	1.739	0.003	1	2
HCl+	hydrogen chloride cation	rHCl	1.315		1.317	0.003	1	2
SiH4	Silane	rSiH	1.480	±0.000	1.483	0.003	1	2
CH3CCH	propyne	rCH	1.060		1.063	0.003	3	4
C2H2+	acetylene cation	rCH	1.077	±0.005	1.080	0.003	1	3
CH3OC2H5	Ethane, methoxy-	rCH	1.089	±0.008	1.092	0.003	4	10
C3H3NO	Oxazole	rCO	1.370	±0.002	1.373	0.003	1	5
BH	Boron monohydride	rBH	1.232		1.235	0.003	1	2
NH	Imidogen	rNH	1.036		1.039	0.003	1	2
C3H4	cyclopropene	rCH	1.072		1.075	0.003	2	4
CH3OC2H5	Ethane, methoxy-	rCH	1.086	±0.010	1.089	0.003	1	5
CH	Methylidyne	rCH	1.120		1.123	0.003	1	2
FNO2	Nitryl fluoride	rN=O	1.180	±0.005	1.183	0.003	1	3
NF	nitrogen fluoride	rNF	1.317		1.320	0.003	1	2
NO+	nitric oxide cation	rN=O	1.066		1.069	0.003	1	2
OH-	hydroxide anion	rOH	0.964		0.968	0.004	1	2
CH2NN	diazomethane	rN=N	1.139		1.143	0.004	2	3
CBrClF2	Methane, bromochlorodifluoro-	rCBr	1.932	±0.004	1.936	0.004	1	2
LiNH2	lithium amide	rLiN	1.736	±0.003	1.740	0.004	1	2
SeO2	Selenium dioxide	rSeO	1.607	±0.001	1.611	0.004	1	2
F2	Fluorine diatomic	rFF	1.412		1.416	0.004	1	2
CH2CHF	Ethene, fluoro-	rCH	1.077		1.081	0.004	2	5
CO+	carbon monoxide cation	rC=O	1.115	±0.000	1.119	0.004	1	2
HOBr	Hypobromous acid	rOH	0.961		0.965	0.004	1	2
CH3CHFCH3	2-Fluoropropane	rCH	1.088	±0.006	1.092	0.004	4	6
CH2F2	Methane, difluoro-	rCF	1.351	±0.001	1.355	0.004	1	4
CH3NH2	methyl amine	rCH	1.093	±0.000	1.097	0.004	1	3
O2+	diatomic oxygen cation	rOO	1.116		1.121	0.004	1	2
N2O3	Dinitrogen trioxide	rN=O	1.202		1.206	0.004	2	4
BF	Boron monofluoride	rBF	1.267	±0.000	1.271	0.005	1	2
F2O	Difluorine monoxide	rFO	1.405		1.410	0.005	1	2
O2	Oxygen diatomic	rO=O	1.208		1.212	0.005	1	2
CHF3	Methane, trifluoro-	rCF	1.328	±0.003	1.333	0.005	1	3
CCl2O	Phosgene	rC=O	1.177		1.182	0.005	1	2
CH2CO	Ketene	rC=O	1.162		1.167	0.005	2	3
CH2Br2	dibromomethane	rCBr	1.925	±0.002	1.930	0.005	1	4
ClCN	chlorocyanogen	rC#N	1.161		1.166	0.005	2	3
HS	Mercapto radical	rSH	1.341		1.346	0.005	1	2
SeO	Selenium monoxide	rSeO	1.639	±0.001	1.645	0.005	1	2
DS	Mercapto-d	rSD	1.341		1.346	0.005	1	2
HO2	Hydroperoxy radical	rOO	1.331		1.336	0.005	1	2
CH2F2	Methane, difluoro-	rCH	1.084	±0.003	1.090	0.006	1	2
H2CSe	Selenoformaldehyde	rC=Se	1.753		1.759	0.006	1	2
GeBr4	Germanium tetrabromide	rGeBr	2.272	±0.001	2.278	0.006	1	2
BF3	Borane, trifluoro-	rBF	1.307		1.313	0.006	1	2
HNCNH	diiminomethane	rC=N	1.224	±0.001	1.230	0.006	1	2
HS-	mercapto anion	rSH	1.343		1.349	0.006	1	2
CH3CH2O	Ethoxy radical	rCH	1.085		1.091	0.006	1	5
N2	Nitrogen diatomic	rN#N	1.098		1.104	0.006	1	2
C2H3	vinyl	rCH	1.085		1.091	0.006	2	4
CH3OCl	methyl hypochlorite	rCH	1.086	±0.018	1.092	0.006	3	5
CH3Br	methyl bromide	rCBr	1.934	±0.000	1.940	0.006	1	2
N2O3	Dinitrogen trioxide	rN=O	1.142		1.148	0.006	1	3
CN-	cyanide anion	rC#N	1.177	±0.004	1.183	0.006	1	2
SF4	Sulfur tetrafluoride	rSF	1.646	±0.003	1.653	0.007	1	2
CH3CH2O	Ethoxy radical	rCH	1.086		1.093	0.007	1	4
PH	phosphorus monohydride	rPH	1.422		1.429	0.007	1	2
PF5	Phosphorus pentafluoride	rFP	1.577		1.584	0.007	1	5
BrF	Bromine monofluoride	rFBr	1.759	±0.000	1.766	0.007	1	2
As4	Arsenic tetramer	rAsAs	2.435		2.442	0.007	1	2
SiH+	silicon monohydride cation	rSiH	1.504		1.511	0.007	1	2
GeH3F	monofluorogermane	rGeH	1.515	±0.000	1.521	0.007	1	3
SeCl2	Selenium Dichloride	rClSe	2.157	±0.003	2.164	0.007	1	2
LiOH	lithium hydroxide	rLiO	1.582		1.588	0.007	1	2
GeF+	Germanium monofluoride cation	rFGe	1.665	±0.000	1.673	0.007	1	2
C2H2	Acetylene	rC#C	1.203		1.210	0.007	1	2
BeH	beryllium monohydride	rBeH	1.343		1.350	0.007	1	2
SiH3+	Silyl cation	rSiH	1.460	±0.010	1.467	0.007	1	2
CO	Carbon monoxide	rC#O	1.128	±0.000	1.136	0.008	1	2
GaAs	Gallium arsenide	rGa#As	2.530	±0.020	2.538	0.008	1	2
BeH2	beryllium dihydride	rBeH	1.326	±0.000	1.334	0.008	1	2
SCSe	Carbon sulfide selenide	rC=Se	1.695	±0.002	1.703	0.008	1	3
COBr2	Carbonic dibromide	rC=O	1.172	±0.003	1.180	0.008	1	2
CH3CSNH2	Ethanethioamide	rC=S	1.647	±0.002	1.655	0.008	1	2
SiC	silicon monocarbide	rCSi	1.722		1.730	0.008	1	2
C2	Carbon diatomic	rC=C	1.243		1.251	0.008	1	2
SOCl2	thionyl chloride	rS=O	1.443	±0.006	1.451	0.008	1	2
SiH2F2	difluorosilane	rSiH	1.462		1.470	0.008	1	4
NH3BF3	Amminetrifluoroboron	rBN	1.673		1.682	0.009	1	2
OCSe	Carbonyl selenide	rC=Se	1.709		1.718	0.009	1	3
SiH	Silylidyne	rSiH	1.520		1.529	0.009	1	2
AlH	aluminum monohydride	rAlH	1.648		1.657	0.009	1	2
C3H6	Cyclopropane	rCC	1.501		1.510	0.009	1	2
CH3OC2H5	Ethane, methoxy-	rCO	1.407	±0.004	1.416	0.009	2	3
BO	boron monoxide	rB=O	1.205		1.213	0.009	1	2
ClOF3	Chlorine trifluoride oxide	rFCl	1.713	±0.003	1.722	0.009	1	4
C2H6O2S	Dimethyl sulfone	rCS	1.777	±0.006	1.786	0.009	1	4
SOF4	Sulfur tetrafluoride oxide	rFS	1.596	±0.003	1.605	0.009	1	3
SCSe	Carbon sulfide selenide	rC=S	1.553	±0.002	1.562	0.009	1	2
SiP	Silicon monophosphide	rSiP	2.078	±0.002	2.087	0.009	1	2
GeO	Germanium monoxide	rOGe	1.625		1.634	0.009	1	2
BN	boron nitride	rB=N	1.325		1.334	0.009	1	2
BCl	boron monochloride	rBCl	1.719	±0.000	1.729	0.010	1	2
HClO4	perchloric acid	rO=Cl	1.414	±0.001	1.424	0.010	1	2
NH2CONH2	Urea	rNH	0.998		1.008	0.010	4	8
CH2CHCH2CH3	1-Butene	rCC	1.493		1.503	0.010	2	3
NSe	Nitrogen monoselenide	rN=Se	1.652		1.662	0.010	1	2
BeF	Beryllium monofluoride	rBeF	1.361		1.371	0.010	1	2
CH2Cl2	Methylene chloride	rCCl	1.767	±0.002	1.777	0.010	1	4
B2	Boron diatomic	rBB	1.590		1.600	0.010	1	2
HCCl	Chloromethylene	rCCl	1.696	±0.003	1.706	0.010	1	2
GeCl	Germanium monochloride	rClGe	2.164	±0.000	2.174	0.010	1	2
MgO	magnesium oxide	rMgO	1.749		1.760	0.011	1	2
HOCl	hypochlorous acid	rClO	1.697	±0.001	1.709	0.011	1	3
NS	Mononitrogen monosulfide	rNS	1.497	±0.000	1.508	0.011	1	2
H2CS	Thioformaldehyde	rC=S	1.611		1.622	0.011	1	2
PS	phosphorus sulfide	rP=S	1.900		1.912	0.012	1	2
MgOH	magnesium hydroxide	rOH	0.940		0.952	0.012	1	3
BrO	Bromine monoxide	rOBr	1.718		1.730	0.012	1	2
F2SO	Thionyl Fluoride	rFS	1.585	±0.000	1.598	0.012	1	3
PF5	Phosphorus pentafluoride	rPF	1.534		1.546	0.012	1	2
SF	Monosulfur monofluoride	rSF	1.599		1.612	0.012	1	2
PF2	Phosphorus difluoride	rPF	1.579		1.592	0.012	1	2
NS+	nitrogen sulfide cation	rNS	1.440		1.453	0.013	1	2
AlNC	Aluminum isocyanide	rAlN	1.855	±0.005	1.868	0.013	1	2
LiH	Lithium Hydride	rLiH	1.595	±0.000	1.608	0.013	1	2
SiH3F	monofluorosilane	rSiF	1.595		1.608	0.013	1	2
BeO	beryllium oxide	rBe=O	1.331		1.344	0.013	1	2
CSe	Carbon monoselenide	rC=Se	1.676	±0.000	1.690	0.014	1	2
As2	Arsenic diatomic	rAs#As	2.103		2.116	0.014	1	2
MgH	magnesium monohydride	rMgH	1.730		1.744	0.014	1	2
Se2	Selenium diatomic	rSe=Se	2.166	±0.001	2.180	0.014	1	2
SF4	Sulfur tetrafluoride	rSF	1.545	±0.003	1.559	0.014	1	4
BS	boron sulfide	rBS	1.609		1.623	0.014	1	2
LiO	lithium oxide	rLiO	1.688		1.703	0.015	1	2
SOF4	Sulfur tetrafluoride oxide	rFS	1.539	±0.003	1.554	0.015	1	5
AsF5	Arsenic pentafluoride	rAsF	1.656	±0.004	1.671	0.015	1	2
CH3CH2O	Ethoxy radical	rCH	1.088		1.103	0.015	2	7
CS	carbon monosulfide	rC#S	1.535		1.550	0.015	1	2
CCl2O	Phosgene	rCCl	1.737		1.752	0.015	2	3
ClCN	chlorocyanogen	rCCl	1.629		1.644	0.015	1	2
SiF	silicon monofluoride	rSiF	1.604		1.620	0.016	1	2
BeCl	beryllium monochloride	rBeCl	1.797		1.813	0.016	1	2
HClO4	perchloric acid	rOCl	1.641	±0.002	1.657	0.016	1	3
GeS	Germanium monosulfide	rS=Ge	2.012	±0.000	2.028	0.016	1	2
PN	Phosphorus mononitride	rP#N	1.491		1.507	0.016	1	2
ClF	Chlorine monofluoride	rFCl	1.628	±0.000	1.645	0.017	1	2
C3H5	Allyl radical	rCH	1.069		1.086	0.017	1	2
SiO	Silicon monoxide	rSiO	1.510	±0.000	1.527	0.017	1	2
ScH	Scandium monohydride	rScH	1.775	±0.000	1.792	0.017	1	2
CCl	carbon monochloride	rCCl	1.649		1.666	0.017	1	2
SiF2	Silicon difluoride	rFSi	1.590	±0.000	1.608	0.018	1	2
PF+	phosphorus monofluoride cation	rFP	1.500		1.518	0.018	1	2
C2H	Ethynyl radical	rCH	1.047		1.065	0.018	1	3
SiH3Cl	chlorosilane	rSiCl	2.051		2.069	0.018	1	2
PO	Phosphorus monoxide	rP=O	1.476		1.495	0.019	1	2
CCl2	dichloromethylene	rCCl	1.711		1.730	0.019	1	2
MgH+	magnesium monohydride cation	rMgH	1.652		1.671	0.019	1	2
SO	Sulfur monoxide	rS=O	1.481		1.501	0.019	1	2
BeS	beryllium sulfide	rBe=S	1.742		1.761	0.020	1	2
LiF	lithium fluoride	rLiF	1.564	±0.000	1.584	0.020	1	2
SSO	Disulfur monoxide	rS=O	1.456		1.477	0.020	1	2
F2SO	Thionyl Fluoride	rO=S	1.413	±0.000	1.433	0.021	1	2
PO-	phosphorus monoxide anion	rOP	1.540		1.561	0.021	1	2
Br2	Bromine diatomic	rBrBr	2.281		2.302	0.021	1	2
LiCl	lithium chloride	rLiCl	2.021	±0.000	2.042	0.021	1	2
SiH2Cl2	dichlorosilane	rSiCl	2.033	±0.003	2.054	0.021	1	4
C2H6O2S	Dimethyl sulfone	rS=O	1.431	±0.004	1.453	0.022	1	2
AlF	Aluminum monofluoride	rAlF	1.654	±0.000	1.677	0.022	1	2
SiCl	Clorosilylidyne	rSiCl	2.061	±0.000	2.084	0.022	1	2
TiCl	Titanium Monochloride	rClTi	2.265	±0.000	2.287	0.022	1	2
P2	Phosphorus diatomic	rP#P	1.893		1.916	0.022	1	2
BrCl	Bromine monochloride	rClBr	2.136	±0.000	2.159	0.022	1	2
AlC	Aluminum carbide	rC=Al	1.955		1.978	0.023	1	2
LiBr	Lithium Bromide	rLiBr	2.170	±0.000	2.194	0.023	1	2
AlCl	Aluminum monochloride	rAlCl	2.130	±0.000	2.154	0.023	1	2
SiS	silicon monosulfide	rSiS	1.929	±0.000	1.953	0.024	1	2
S2+	sulfur diatomic cation	rS=S	1.825	±0.010	1.849	0.024	1	2
AlO	Aluminum monoxide	rAlO	1.618		1.642	0.024	1	2
AlN	Aluminum nitride	rN#Al	1.786		1.811	0.024	1	2
HSiCl	Chlorosilylene	rSiCl	2.067	±0.003	2.092	0.025	1	2
HSSSH	trisulfane	rSS	2.054	±0.000	2.080	0.026	1	2
ClOF3	Chlorine trifluoride oxide	rFCl	1.603	±0.004	1.629	0.026	1	3
AlS	Aluminum sulfide	rAlS	2.029		2.055	0.026	1	2
MgS	magnesium sulfide	rMgS	2.143		2.169	0.026	1	2
S2	Sulfur diatomic	rS=S	1.889		1.916	0.026	1	2
Li2	Lithium diatomic	rLiLi	2.673		2.700	0.027	1	2
SCl2	Sulfur dichloride	rSCl	2.013	±0.001	2.041	0.028	1	2
HClO4	perchloric acid	rO=Cl	1.404	±0.001	1.433	0.029	1	4
Cl2	Chlorine diatomic	rClCl	1.988		2.018	0.030	1	2
SCl	sulfur monochloride	rSCl	1.975		2.005	0.030	1	2
SSO	Disulfur monoxide	rS=S	1.884		1.916	0.032	2	3
MgOH	magnesium hydroxide	rMgO	1.767		1.799	0.032	1	2
NaH	sodium hydride	rNaH	1.887	±0.000	1.923	0.037	1	2
C2Cl2	dichloroacetylene	rCCl	1.612	±0.030	1.649	0.037	1	3
CFCl	chlorofluoromethylene	rCCl	1.714		1.757	0.043	1	3
NaCl	Sodium Chloride	rNaCl	2.361	±0.000	2.405	0.044	1	2
NaBr	Sodium Bromide	rNaBr	2.502	±0.000	2.548	0.046	1	2
CaH	Calcium monohydride	rCaH	2.003	±0.000	2.053	0.051	1	2
NaF	sodium fluoride	rNaF	1.926	±0.000	1.979	0.053	1	2
NaLi	lithium sodium	rLiNa	2.889		2.951	0.062	1	2
CaO	Calcium monoxide	rOCa	1.822		1.927	0.105	1	2
Al2Cl6	Aluminum, di-μ-chlorotetrachlorodi-	rAlCl	2.040	±0.040	2.281	0.241	1	3

309 molecules.