Heptanuclear zinc carboxylate complex: New supramolecular building unit and unique supramolecular architecture
摘要:
The reaction of the bifunctional ligand (1,8-naphthalimido)propanoate (L-C2(-)), containing a carboxylate group for metal bonding and a 1,8-naphthalimide group for pi center dot center dot center dot pi stacking interactions, with Zn(O2CCH3)(2)(H2O)(2) yields a novel heptanuclear complex [Zn-7(O)(2)(L-C2)(10)(DMF)(2)]. In the solid-state structure, a central zinc(II) cation is linked to six terminal zinc(II) cations by ten bridging carboxylate ligands and two mu(4)-O ions forming a vertex shared bitetrahedron, a new type of secondary building unit (SBU). The heptanuclear units are organized into a complex three-dimensional architecture by pi center dot center dot center dot pi stacking interactions of the 1,8-naphthalimide groups. Eight of the naphthalimide rings on each heptanuclear unit form pi center dot center dot center dot pi stacking interactions with rings on eight adjacent units generating a unique "single linked" three-dimensional architecture. The TGA data indicate this structure is robust and luminescent studies show the solid emits in the green region. (C) 2012 Elsevier Ltd. All rights reserved.
Heptanuclear zinc carboxylate complex: New supramolecular building unit and unique supramolecular architecture
摘要:
The reaction of the bifunctional ligand (1,8-naphthalimido)propanoate (L-C2(-)), containing a carboxylate group for metal bonding and a 1,8-naphthalimide group for pi center dot center dot center dot pi stacking interactions, with Zn(O2CCH3)(2)(H2O)(2) yields a novel heptanuclear complex [Zn-7(O)(2)(L-C2)(10)(DMF)(2)]. In the solid-state structure, a central zinc(II) cation is linked to six terminal zinc(II) cations by ten bridging carboxylate ligands and two mu(4)-O ions forming a vertex shared bitetrahedron, a new type of secondary building unit (SBU). The heptanuclear units are organized into a complex three-dimensional architecture by pi center dot center dot center dot pi stacking interactions of the 1,8-naphthalimide groups. Eight of the naphthalimide rings on each heptanuclear unit form pi center dot center dot center dot pi stacking interactions with rings on eight adjacent units generating a unique "single linked" three-dimensional architecture. The TGA data indicate this structure is robust and luminescent studies show the solid emits in the green region. (C) 2012 Elsevier Ltd. All rights reserved.