Synthesis, Characterization, and Herbicidal Activity of Two Tricyclohexyltin Aryloxyacetates

Two tricyclohexyltin aryloxyacetates (C1, C2) have been synthesized by the reaction of tricyclohexyltin hydroxide with 1,3-phenylenedioxydiacetic acid (L1) or 3-(N,N'-dicarboxymethyl)aminophenoxyacetic acid (L2), respectively. The structures were characterized by elemental analyses, IR, 1H, 13C NMR, and X‑ray diffraction. The structure of complex C1 has been previously reported, C2 is a novel complex. The results of thermal stability analysis confirmed that the two complexes contain solvent molecules, so they can only exist stably below 70oC. The results of herbicidal activity showed that C1 and C2 had moderate growth regulation effects on Alfalfa.