Hydrothermal Synthesis and Crystal Structure of [Mn(phen)‐(m‐phth)]n (phen=1, 10‐phenanthroline, m‐phth=isophthalate)

Hydrothermal reaction of1,2,4-benzenetricarboxylic acid, and MnCl24H2O with1,10-phenanthroline gave the title complex, [Mn(phen)(m-phth)]n, which crystallizes in the monoclinic system, space group P2/c with a= 0.83582(3) nm, b=1.04246(4) nm, c=1.87777(7) nm, β= 100.314(2), V=1.60%8(10) nm3, Z=4, and the final R =0.0576, wR =0.1294. In the complex, each Mn(II) ion is coordinated to four O atoms of carboxylate groups and two N atoms of phen. Isophthalate was generated in situ through the loss of one carboxylate group of1,2,4-benzenetricarboxylic acid under the hydrothermal condition. Each isophthalate is bound to three manganese atoms through O atom of carboxylate in bridging and chelating fashion, affording manganese(II) pairs that are linked by the isophthalate group to yield a zig-zag chain along the c-axis.