Directed self-assembly of mono and dinuclear copper(II) isophthalates into 1D polymeric structures. Design and an unusual cocrystallization

作者：Dorazco Gonzalez Alejandro^*; Martinez Vargas Sergio; Hernandez Ortegaa Simon; Valdes Martinez Jesus

来源：CrystEngComm, 2013, 15(30): 5961-5968.

DOI：10.1039/c3ce00044c

New examples of 1D coordination polymers containing mononuclear and dinuclear copper(II) complexes with a series of isophthalates have been designed, synthesized and characterized by single-crystal X-ray diffraction. The reaction between the aqua-complex [Cu(tmen)(H2O)(x)][ClO4](2) (tmen = N,N,N%26apos;,N%26apos;-tetramethylethylenediamine) and isophthalate 5-Xip (substituted in position 5, X = -H, -NO2) results in infinite chains with stoichiometry [Cu(tmen)(5-Xip)(H2O)](n). A charge-assisted hydrogen bond of type Cu-OH2 center dot center dot center dot O organizes the 1D chains into 2D layers. On the other hand, the self-assembly of the complex [Cu(tmen)(H2O)(x)][ClO4](2) with a series of isophthalates 5-Xip dianion (X = -H, -NO2, -NH2, -OMe) in presence of 0.5 equiv. of KOH results in 1D chains with dinuclear complexes [Cu-2(tmen)(2)(mu-OH)](+3) as building blocks. The absence of a water molecule coordinated to Cu(II) atom in the dinuclear chains generates different patterns into 2D. The reaction of the aqua-complex of Cu(II) with tetrafluoroisophthalate (TFip) gave a new Janus complex [Cu-2(tmen)(2)(H2O)(2)(TFip)(2)]center dot[Cu(tmen)(TF-ip)](n)center dot 3(H2O), where two different supramolecular arrangements are present in the same single crystal (a dimeric structure and 1D polymeric structure).

• 出版日期2013