Novel Tin Complexes Containing an Oximato Ligand: Synthesis, Characterization, and Computational Investigation

Abstract

Organotin complexes 1–6 of the general formula [SnR2L] and [(SnR3)2L] (L=phenanthrenequinone dioximato – a bidentate ligand, R=Me, Bu, and Ph) were synthesized by the reaction of the sodium salt of the ligand H2L (prepared in situ with MeONa) and SnR2Cl2/SnR3Cl in 1 : 1 and 1 : 2 molar ratios. The physical and spectral properties of the newly synthesized complexes 1–6 are described. DFT and HF Calculations were performed to confirm the proposed structures.

Ligand Effects in Low‐Valent Co(I) Clathrochelate Complexes

“…Next, we have investigated Co clathrochelate complexes with phenanthrenequinone dioximato ligands, which are potentially redox non-innocent. [13] The Co(II) complex 5 was prepared in 37 % yield from CoCl 2 , phenanthrenequinone dioxime, [14,15] and phenylboronic acid. Complex 5 shows good solubility in CH 2 Cl and HF.…”

Synthesis and Photophysical Studies of Novel V‐Shaped 2,3‐Bis{5‐aryl‐2‐thienyl}(dibenzo[f,h])quinoxalines

“…The dibenzoquinoxaline skeleton 6 was formed by a condensation reaction between a phenanthrene‐9,10‐diamine 3 and 1,2‐bis(5‐bromothiophen‐2‐yl)ethane‐1,2‐dione 5 in ethanol under reflux according to literature procedure . The phenanthrene‐9,10‐diamine 3 was prepared by the reaction of phenanthrene‐9,10‐dione 2 and hydroxylamine hydrochloride in ethanol followed by reduction of phenanthrene‐9,10‐dioxime with SnCl 2 ⋅ H 2 O in the mixture of hydrochloric acid and ethanol . The bromination of 2,2′‐thenil 4 with Br 2 in chloroform was conducted in accordance with the literature method .…”

“…Phenanthrene‐9,10‐diamine ( 3) was synthesized in two steps from phenanthrene‐9,10‐dione 2 according to the literature procedures . White solid, mp 165–167 °C (lit.…”

Cages vs. Prisms: Controlling the Formation of Metallosupramolecular Architectures with Ligand Side‐Chains

“…The synthesis of 1 was accomplished in two steps. First, a tetrabrominated clathrochelate complex was prepared in a metal‐templated condensation reaction between anhydrous FeCl 2 , phenanthrene‐9,10‐dione dioxime, and 3,5‐dibromophenylboronic acid. Subsequent cross‐coupling with 4‐pyridylboronic acid gave ligand 1 in an overall yield of 48 %.…”

“…General: Diethyl glyoxime, phenanthrene‐9,10‐dione dioxime, and ligand 2 were prepared as described in the literature. The complexes (dppe)PtCl 2 and (dppe)Pt(OTf) 2 were prepared in analogy to a published procedure …”