BUILDING A 2-DIMENSIONAL COORDINATION POLYMER HAVING A MULTILAYERED ARRANGEMENT - A MOLECULAR ASSEMBLY COMPRISING HANGING PHENAZINE MOLECULES BETWEEN POLYMERIC STAIR FRAMEWORKS OF COPPER(I) HALIDES

Three copper(i) complexes with phenazine (phz), [{Cu2(mu-X)2(mu-phz))infinity] (X = 11, Br 2 or Cl 3) were synthesized and their molecular structures and packing determined by single-crystal X-ray diffraction methods. The copper atoms of the Cu2I2 rhomboid in 1 are bridged by phz molecules to give an infinite linear chain and the phz molecules overlap between the infinite chains with an interplanar spacing of 3.46 angstrom. Compounds 2 and 3 have two-dimensional sheets of hanging phz molecules between polymeric stair frameworks of CuBr and CuCl, respectively. The interplanar spacings of adjacent phz molecules for 2 and 3 are 3.40 and 3.36 angstrom, respectively. All three complexes exhibit an absorption band at about 710 nm characteristic of copper(i) co-ordination polymers with phz.