MS36-P11 Effect of dehydratation on zinc malonate complexes with 1,2-bis(pyridin-4-yl)ethyleneRecently we carried out a series of photoinitiated reactions in zinc malonates with bis(pyrid-4-yl)ethylene [1]. The transformation of {[Zn(bpe)(Me2mal)]·H2O}n to {[Zn(bpe)(Me2mal)]2[Zn2(tpcb)(Me2mal)2]·H2O}n (Me2mal = dimethylmalonate, tpcb = 1,1,2,2-tetrakis(pyridine-4-yl)cyclobutane) was proposed to be affected by dehydratation reaction. Thus, we studied the effect of dehydration on above {[Zn(bpe)(Me2mal)]·H2O}n and its isostructural analog {[Zn(bpe)(cbdc)]·H2O}n (cbdc = cyclobutane-1,1-dicarboxylato). Both compounds were heated for 2 hours at 120°C until constant weight and then irradiated with UV for 8 hours. Transformations of crystalline compounds were controlled by means of powder X-ray diffraction (Figure) and 1H NMR. As it follows from Figure, similarly with {[Zn(bpe)(Me2mal)]·H2O}n dehydration of {[Zn(bpe)(cbdc)]·H2O}n to {[Zn(bpe)(cbdc]}n and irradiation of the latter compound can be described as a two-stage solid-state process. Based on our data, irradiation of {[Zn(bpe)(cbdc)]·H2O}n at room temperature seem to be accompanied by dehydration. Analysis of the reaction products is underway now.
References:
[1] Ekaterina N. Zorina-Tikhonova et al., (2018) IUCrJ , 5 2052-2525.Keywords: photoinitiation, complex compounds, X-ray diffraction
References: [1] Ekaterina N. Zorina-Tikhonova et al., (2018) IUCrJ , 5 2052-2525.Keywords: photoinitiation, complex compounds, X-ray diffraction