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Journal ArticleDOI

The use of conductivity measurements in organic solvents for the characterisation of coordination compounds

01 Oct 1971-Coordination Chemistry Reviews (Elsevier)-Vol. 7, Iss: 1, pp 81-122
About: This article is published in Coordination Chemistry Reviews.The article was published on 1971-10-01. It has received 8264 citations till now. The article focuses on the topics: Coordination complex.
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TL;DR: In this paper, the crystal structure of compound 1 revealed that linear [Ag(Et2-Bimy)2]+ and [AgBr2]- groups were associated through a short AgI−AgI contact (2.956 A).

1,033 citations

Journal ArticleDOI
TL;DR: The complexes were solution electrocatalysts that decreased over-voltage for H(+) reduction from HOAc in CH(3)CN by up to 600 mV, and the most effective electrocatalyst is the asymmetric 1-PTA species, which promotes H(2) formation from HO Ac at the Fe(0)Fe(I) redox level.
Abstract: As functional biomimics of the hydrogen-producing capability of the dinuclear active site in [Fe]H2ase, the FeIFeI organometallic complexes, (μ-pdt)[Fe(CO)2PTA]2, 1-PTA2, (pdt = SCH2CH2CH2S; PTA = 1,3,5-triaza-7-phosphaadamantane), and (μ-pdt)[Fe(CO)3][Fe(CO)2PTA], 1-PTA, were synthesized and fully characterized. For comparison to the hydrophobic (μ-pdt)[Fe(CO)2(PMe3)]2 and {(μ-H)(μ-pdt)[Fe(CO)2(PMe3)]2}+ analogues, electrochemical responses of 1-PTA2 and 1-(PTA·H+)2 were recorded in acetonitrile and in acetonitrile/water mixtures in the absence and presence of acetic acid. The production of H2 and the dependence of current on acid concentration indicated that the complexes were solution electrocatalysts that decreased over-voltage for H+ reduction from HOAc in CH3CN by up to 600 mV. The most effective electrocatalyst is the asymmetric 1-PTA species, which promotes H2 formation from HOAc (pKa in CH3CN = 22.6) at −1.4 V in CH3CN/H2O mixtures at the Fe0FeI redox level. Functionalization of the PTA ligand vi...

404 citations

Journal ArticleDOI
TL;DR: In this paper, the synthesis of the Schiff base ligands, 4-[(4-bromo-phenylimino)-methyl]-benzene-1,2,3-triol (A1), 4]-(3,5-di-tert-butyl-4-hydroxy-phenymalin)-methyl]benzenes- 1,2-diol (A5), and their Cd(II) and Cu(II)-metal complexes, stability constants and potentiometric studies.

382 citations

Journal ArticleDOI
TL;DR: A series of metal complexes of cobalt(II), nickel( II) and copper(II) have been synthesized with newly synthesized biologically active 1,2,4-triazole Schiff bases derived from the condensation of 3-substituted-4-amino-5-mercapto-1-2, 4-Triazole and 8-formyl-7-hydroxy-4

326 citations

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TL;DR: In this paper, a series of bi-and tri-nuclear complexes formed by using the donor properties of the two cis-oxygen atoms in metal (M) complexes of tetradentate Shiff bases (TSB) derived from salicylaldehyde or o-hydroxyacetophenone are reported.

272 citations

Journal ArticleDOI
TL;DR: The coordination chemistry of pyridine N-oxide with a variety of acceptors has been investigated in this article, where the new substances Co(ClO4)26L, Co(NO3)24L), CoCl23L and CoCl2LH20, NiClO 4H2O, NiBr26L and NiBr2L H2O have been isolated and characterized by molecular conductance measurements in non-aqueous solvents, magnetic susceptibility measurements, and infrared spectra.
Abstract: : The coordination chemistry of pyridine N-oxide with a variety of acceptors has been investigated The new substances Co(ClO4)26L, Co(NO3)26L, CoCl23L, CoCl2LH20, Ni(ClO4)26L, NiCl2LH2O, NiBr26L, NiI26L, NiBr2L H2O, Cu(ClO4)24L, Cu(NO3)22L, CuCl2L, CuCl22L, Zn(ClO4)26L, ZnCl22L, Zn(NO3)26L, Fe(ClO4)26L, Fe(ClO4)36L, and SnBr42L (where L is pyridine N-oxide) have been isolated and characterized by molecular conductance measurements in non-aqueous solvents, magnetic susceptibility measurements, and infrared spectra All of the perchlorates and some of the nitrates and halides have only the pyridine N-oxide in the first coordination sphere However, in some cases, both nitrates and halides are coordinated to the central ion

176 citations