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Syntheses and Crystal Structures of Three Copper(II) Compounds with 2‐Furoic Acid: A Dinuclear Paddle‐wheel Unit and Two Coordination Polymers Supported by Pyridyl Donor Ligands
Author(s) -
Marinho Maria Vanda,
Faria Marques Lippy,
Maia Daniel S.,
Speziali Nivaldo L.,
Yoshida Maria Irene,
Janczak Jan,
Hörner Manfredo,
Cimini Corrêa Charlane,
Diniz Renata,
Machado Flávia C.
Publication year - 2015
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201500244
Subject(s) - supramolecular chemistry , crystallography , stacking , chemistry , crystal structure , ligand (biochemistry) , bimetallic strip , hydrogen bond , copper , propane , single crystal , stereochemistry , molecule , metal , biochemistry , receptor , organic chemistry
Three copper(II) complexes, [Cu 2 (O 2 CC 4 H 3 O) 4 (H 2 O) 2 ] · H 2 O ( 1 ), {[Cu 2 (O 2 CC 4 H 3 O) 4 (bipy) 2 (H 2 O) 2 ] · 2H 2 O} n ( 2 ), and {[Cu(bpp) 2 (H 2 O)](O 2 CC 4 H 3 O) 2 · 7H 2 O} ( 3 ) [O 2 CC 4 H 3 O = 2‐furanocarboxylate anion, bipy = 4, 4′‐bipyridine, and bpp = 1, 3‐bis(4‐pyridyl)propane] were synthesized and their crystal and molecular structures were determined by single‐crystal X‐ray diffraction analysis. Compound 1 consists on bimetallic tetracarboxylate units exhibiting a common paddle wheel structure. The paddle wheel units are connected by hydrogen bonding along the crystallographic b axis and π–π stacking interactions between the furano rings along the crystallographic c axis, giving rise to a 2D supramolecular array. Compounds 2 and 3 were made up in the presence of 4, 4′‐bipyridine and 1, 3‐bis(4‐pyridyl)propane ligands, respectively, to produce 1D polymeric chains by metal‐ligand interactions. The presence of other weak non‐covalent interactions in these compounds extends the systems dimensionality to form 3D supramolecular networks.