Transition Metals and Sulfur – A Strong Relationship for Life

Transition Metals and Sulfur – A Strong Relationship for Life
Author: Martha Sosa Torres
Publisher: Walter de Gruyter GmbH & Co KG
Total Pages: 610
Release: 2020-04-06
Genre: Science
ISBN: 3110588943
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Metal Ions in Life Sciences links coordination chemistry and biochemistry in their widest sense and thus increases our understanding of the relationship between the chemistry of metals and life processes; in fact, it is an old wisdom that metals are indispensable for life. The series reflects the interdisciplinary nature of Biological Inorganic Chemistry and coordinates the efforts of scientists in numerous interconnecting research fields.

Main Group and Transition Metal Complexes Supported by Multidentate Tripodal Ligands that Feature Nitrogen, Oxygen and Sulfur Donors

Main Group and Transition Metal Complexes Supported by Multidentate Tripodal Ligands that Feature Nitrogen, Oxygen and Sulfur Donors
Author:
Publisher:
Total Pages:
Release: 2013
Genre:
ISBN:
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Chapter 5 describes two multidentate, L3X type ligands, which feature [CN3] and [CNO2] donors, namely tris(2 pyridylseleno)methane, [Tpsem]H, and bis(2-pyridonyl)(pyridin-2-yloxy)methane, [O-poBpom]H. They have been synthesized, characterized, and employed in the synthesis of zinc and cadmium complexes. Chapter 6 describes the synthesis and structural characterization of a new [Tp] ligand featuring an allyl substituent on the central boron atom, namely [allylTpBut]Li is reported. The compound reacts steadily with CH3CH2SH under 350 nm UV light via a thiol-ene click reaction. The resulting [CH3CH2S(CH2)3TpBut]Li complex can further react with metal halide. For example, the reaction of [CH3CH2S(CH2)3TpBut]Li with ZnI2 produced [CH3CH2S(CH2)3TpBut]ZnI at room temperature. This study provides a simple model on the immobilization of [Tp] metal complexes to the polymer chains with -SH terminals.

Main Group and Transition Metal Complexes Supported by Carbon, Sulfur, and Selenium Donor Ligands

Main Group and Transition Metal Complexes Supported by Carbon, Sulfur, and Selenium Donor Ligands
Author: Patrick Quinlivan
Publisher:
Total Pages:
Release: 2018
Genre:
ISBN:
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For example, a mixture of [TmBut]ZnMe and Me2Cd form an equilibrium mixture with [TmBut]CdMe and Me2Zn. Furthermore, transfer of the [TmBut] ligand between the metal centers is possible too. This is demonstrated by the transfer of [TmBut] from mercury to zinc in the methyl system, [TmBut]HgMe/Me2Zn. Additionally, transfer of [TmBut] from zinc to mercury is also observed upon treatment of [TmBut]2Zn with HgI2 to afford [TmBut]HgI and [TmBut]ZnI, thereby indicating that the nature of the co-ligand has a profound effect on the thermodynamics of ligand exchange. Chapter 3 explores the coordination chemistry of the selenium donor ligand, H(sebenzimMe). H(sebenzimMe) is able to coordinate metal centers through the selenium atom in a dative fashion, and, depending upon the metal center, up to four H(sebenzimMe) ligands can coordinate the same metal. Additionally, H(sebenzimMe) can be deprotonated to form [sebenzimMe]–, allowing for the potential of an LX coordination mode, which results in bridging complexes for the metal compounds investigated.