## Abstract In order to improve the encapsulation of metal ions coordinated by tris(thioimidazolyl)borate ligands, four new such ligands with __o__‐substituted phenyl substituents were synthesised as well as ones with __p__‐tolyl and cyclohexyl substituents. In order to provide a basis for their bi
New Tripodal N3S Ligands and Some Zinc Complexes Thereof
✍ Scribed by Rainer Burth; Andreas Stange; Markus Schäfer; Heinrich Vahrenkamp
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 225 KB
- Volume
- 1998
- Category
- Article
- ISSN
- 1434-1948
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✦ Synopsis
Attachment of 2-pyridylmethyl units to cysteine amide and zinc perchlorate MBPA forms the ionic compound [L • Zn] ClO 4 , presumed to be a thiolate bridged dimer. Structure 2-mercaptobenzylamine leads to the new tripodal N 3 S ligands N α -(4-methylbenzoyl)-L-cysteine-bis(2-pyridylmeth-determinations of MBPA • ZnHal (Hal = Cl, Br) have confirmed the tripodal nature of the ligand in the trigonal-bipy-yl)amide (CBPA-H) and 2-mercaptobenzyl-bis(2-pyridylmethyl)amine (MBPA-H). Their treatment with zinc halides ramidal complexes. yields the neutral complexes L • ZnHal (Hal = Cl, Br, I). With
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The tripodal N,O ligands bis(2-pyridylmethyl)(o-hydroxybenzyl)amine (L 1 ) and bis(2-pyridylmethyl)(2-carboxyethyl)amine (L 2 ) were tested for their ligating properties towards zinc. Zinc halides yielded L 1 •ZnϪHal (1aϪc, Hal = Cl, Br, I) and L 2 •ZnϪHal (2aϪc, Hal = Cl, Br, I). Subsequent treatme
A series of three new quadridentate ligands was synthesized by reaction of the haloacetylated amino acid esters L- BrAc-Phe-OMe (4a), L-BrAc-Lys(Z)-OMe (4b), and ClAc-Gly-OEt (4c), respectively, with bis(picolyl)amine (bpa, 5). The obtained products L-bpaAc-Phe-OMe (3a), L-bpaAc-Lys(Z)-OMe (3b), and
## Abstract The kinetics of the catalyzed dehydration of HCO~3~^−^ by zinc(II) containing tripod complexes has been studied at 25°C using the stopped‐flow technique. The direction of reaction curve was changed in aqueous solution when the pH of the solution was greater than 7.5. The pH‐profile of r