Title

Solvothermal Synthesis and Solid-State Characterization of Metal-Metal Bonded Tetracarboxylatoditechnetium(II,III) Polymers

Document Type

Article

Publication Date

2-14-2020

Publication Title

Polyhedron

Volume

180

First page number:

1

Last page number:

7

Abstract

Investigations of solvothermal reactions with pertechnetate, [TcO4]−, have produced four new low-valent Tc extended metal atom chain (EMAC) complexes with multiple metal-metal bonds. The thermal reaction of potassium pertechnetate with glacial acetic acid, under in-situ hydrogen production from the decomposition of sodium borohydride, yields purple elongated crystals determined to be tetraacetato ditechnetium (II,III) acetate (1), [Tc2(O2CCH3)4(μ-O2CCH3]n. Compound 1 was characterized by single crystal X-ray diffraction and its magnetic properties recorded between 10 and 300 K. Single crystal X-ray diffraction analysis of 1 indicates the Tc2+5 tetraacetato unit is linked by the carboxylate oxygens of the bridging acetate, similar to known chloride and bromide linkage polymers of composition [Tc2(μ-O2CCH3)4Cl]n, and [Tc2(μ-O2CCH3)4Br]n. Using the same synthetic method three similar compounds have been synthesized from propionic, benzoic and pivalic acid.

Keywords

Technetium; Potassium pertechnetate; Carboxylate-bridged dimers; Metal–metal bonds; Hydrothermal synthesis

Disciplines

Chemistry

Language

English

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