+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Preferential behavior on donating atoms of an ambidentate ligand 2-methylisothiazol-3(2H)-one in its metal complexes

Inorganic Chemistry 52(23): 13375-13383

Preferential behavior on donating atoms of an ambidentate ligand 2-methylisothiazol-3(2H)-one in its metal complexes

Five metal complexes of 2-methylisothiazol-3(2H)-one (MIO), [Co(III)(NH3)5(MIO)](3+), [Ru(II)(NH3)5(MIO)](2+), [Ru(III)(NH3)5(MIO)](3+), [Pt(II)Cl3(MIO)](-), and trans-[U(VI)O2(NO3)2(MIO)2], were synthesized, and their structures were determined by single-crystal X-ray crystallography. MIO is an ambidentate ligand and coordinates to metal centers through its oxygen atom in the cobalt(III), ruthenium(III), and uranium(VI) complexes and through its sulfur atom in the ruthenium(II) and platinum(III) complexes. This result suggests that MIO shows preferential behavior on its donating atoms. We also studied the electron-donor abilities of the oxygen and sulfur atoms of MIO. Various physical measurements on the conjugate acid of MIO and the MIO complexes allowed us to determine an acid dissociation constant (pKa) and donor number (DN) for the oxygen atom of MIO and Lever's electrochemical parameter (EL) and a relative covalency parameter (kL) for the sulfur atom.

Accession: 055116769

PMID: 24205862

DOI: 10.1021/ic401673z

Related references

Smith, J.M.; Long, J.R., 2010: First-row transition metal complexes of the strongly donating pentadentate ligand PY4Im. The new ligand PY4Im, which incorporates an axial N-heterocyclic carbene and four equatorial pyridine donors, is readily prepared on a multigram scale. Six-coordinate first row transition metal complexes of the general formula [(PY4Im)M(MeCN)](2+)...

Wechsler, D.; McDonald, R.; Ferguson, M.J.; Stradiotto, M., 2004: Structurally diverse Rh(I) and Mn(I) complexes derived from the new ambidentate indene ligand, (1-[iPr2P(S)]-2-[NMe2])C9H6. A new indene-based ligand featuring pendant phosphine sulfide and amine donor fragments has been developed; Rh(I) coordinates to the neutral form of the ligand in a kappa2-[N,S] fashion, while the anionic form of the ligand binds Rh(I) and Mn(I) i...

Goodgame, D.M.; Grachvogel, D.A.; White, A.J.; Williams, D.J., 2001: Heterometallic network complexes of the ambidentate, extended-reach linear ligand 1-(4'-pyridyl)pyridin-4-one. An investigation into the ability of the ambidentate, "extended-reach" ligand 1-(4'-pyridyl)pyridin-4-one (pypyd) to form polymeric network complexes has resulted in the X-ray characterization of the compounds [Cu(pypyd)(2)(H2O)(2)]...

Bailey, P.J.; Loroño-González, D.; Parsons, S., 2003: 6-Aminofulvene-2-aldimine, a novel class of ambidentate cyclopentadienyl/diimine ligand: synthesis and characterisation of magnesium complexes. Two magnesium complexes of the 6-aminofulvene-2-aldimine (AFA) system bearing cyclohexyl groups on the donor nitrogen atoms have been synthesised; in the first the ligand is coordinated via the two nitrogen donors while in the second it is found t...

Bailey, P.J.; Lanfranchi, M.; Marchiò, L.; Parsons, S., 2001: Hydridotris(thioxotriazolyl)borate (Tt), an ambidentate (N(3)/S(3)) tripodal ligand. X-ray crystal structures of sodium, bismuth(III), tin(IV), and manganese(I) complexes. Treatment of the heterocycle 5-thioxo-4,5-dihydro-3,4-dimethyl-1,2,4-triazole (thioxotriazole) with sodium tetrahydroborate at 210 degrees C provides the new [N(3)/S(3)] ambidentate tripod ligand hydridotris(thioxotriazolyl)borate (Tt) as its sodi...

Johansson, O.; Johannissen, L.O.; Lomoth, R., 2008: Bistable molecular switches based on linkage isomerization in ruthenium polypyridyl complexes with a ligand-bound ambidentate motif. Electron-transfer-induced linkage isomerization was investigated in a series of bis-tridentate Ru polypyridyl complexes [Ru(L-X-OH)(Y-tpy)](2+) with ambidentate ligand L-X-OH=bpy-C(R)(OH)-py (bpy=2,2'-bipyridine; py=pyridine; R=H, Me, Ph, or...

Chekin, F.; Bordbar, M.; Fathollahi, Y.; Alizadeh, N., 2005: The interaction between ketamine and some crown ethers in common organic solvents studied by NMR: the effect of donating atoms and ligand structure. H-1 NMR spectroscopy was used to investigate the stoichiometry and stability of the drug ketamine cation complexes with some crown ethers, such as 15-crown-5 (15CS), aza-15-crown-5 (A15C5), 18-crown-6 (18C6), aza-18-crown-6 (A18C6), diaza-18-crown...

Valyaev, D.A.; Uvarova, M.A.; Grineva, A.A.; César, V.; Nefedov, S.N.; Lugan, Nël., 2016: Post-coordination backbone functionalization of an imidazol-2-ylidene and its application to synthesize heteropolymetallic complexes incorporating the ambidentate IMes(CO2(-)) ligand. Backbone functionalization of the pre-coordinated, emblematic IMes ligand with the COOH moiety was achieved upon treatment of Cp(CO)2Mn(IMes) with n-BuLi followed by CO2 and HCl to afford Cp(CO)2Mn(IMes(COOH)). The latter reacts with (1,10-phen)M(...

Khan, M.M.T.; Satyanarayana, S., 1981: Metal complexes of uracil and mixed ligand metal complexes of uracil as a primary ligand and adenine 1 10 phenanthroline and 2 2' bi pyridyl as secondary ligands. The interaction of Cu(II), Zn(II), Ni(II), Co(II), Mn(II) Mg(II), and Ca(II) ions with uracil in 1:1 metal-uracil, and 1:2 metal-uracil ratios and mixed ligand complexes containing uracil as a primary ligand and adenine, 1,10-phenanthroline and 2,...

El-Tabl, A.Saad.; El-wahed, M.Mohamed.Abd.; Rezk, A.Mahmoud.Salah.Mahmoud., 2014: Cytotoxic behavior and spectroscopic characterization of metal complexes of ethylacetoacetate bis(thiosemicarbazone) ligand. Reaction of Cr(III), Mn(II), Co(II), Ni(II), Cu(II), Zn(II) and Cd(II) ion with 2,4-dihydrazino-thioamido-1-ethoxybutane led to the formation of mono and binuclear complexes. These complexes have been characterized by elemental analyses, IR, UV-Vi...