Reactions of 4-diphenylphosphino benzoic acid with organotin oxides and -oxy-hydroxide

The reactions of p-diphenylphosphinobenzoic acid (LCOOH) with various organotin precursors have been carried out. Accordingly, the reaction of $\left[n\text{-BuSn(O)}\right(\text{OH}{]}_n$ with LCOOH afforded the hexameric compound, $[n{\text{-BuSn(O)O}}_2\text{C}$–${\text{C}}_6{\text{H}}_4$–$p{\text{-PPh}}_2{]}_6$ (1). On the other hand, the reaction of LCOOH with $[n{\text{-Bu}}_2\text{SnO}{]}_n$ gave the tetrameric compound $\left[\right\{n{\text{-Bu}}_2{\text{SnO}}_2\text{C}$–${\text{C}}_6{\text{H}}_4$–$p{\text{-PPh}}_2{\}}_2\text{O}{]}_2$ (2). The 1-D coordination polymers $[{\text{R}}_3{\text{SnO}}_2\text{C}$–${\text{C}}_6{\text{H}}_4$–$p\text{-}{\text{P(O)Ph}}_2{]}_n$, $[\text{R}=n\text{-Bu}$ (3), $\text{R}=\text{Ph}$ (4)] were prepared in the reaction of $[n{\text{-Bu}}_3\text{Sn}{]}_2\text{O}$ or $[{\text{Ph}}_3\text{Sn}{]}_2\text{O}$ with LCOOH. The compounds 1–4 were structurally characterized by multinuclear NMR spectroscopic and single crystal X-ray diffraction studies.

Graphical Abstract

SYNOPSIS The reactions of p-diphenylphosphinobenzoic acid with various organotin precursors have been shown to afford hexameric compound 1, tetrameric compound 2 and 1-D polymeric compounds 3 and 4. The compounds 1–4 were structurally characterized by multinuclear NMR spectroscopic and single crystal X-ray diffraction methods. .