Authors: Tianle Zhang Kaili Wang Changpeng Ji Xianggao Meng
Publish Date: 2014/07/14
Volume: 24, Issue: 5, Pages: 865-873
Abstract
An axial substitution of the coordinated acetonitrile molecules in dinuclear CuI compound Cu2μPhPPy22CH3CN2ClO42 1 PhPPy2 = bis2pyridylphenylphosphine by various dicarboxylates isophthalate terephthalate and naphthalene26dicarboxylate led to a class of new linear coordination polymers Cu2μPhPPy22μ13C6H4CO22∞ 2 Cu2μPhPPy22μ14C6H4CO22∞ 3 and Cu2μPhPPy22μ26C12H6CO22∞ 4 Xray crystallographic studies reveals that all the polymers adopt almost linear structures where the dicarboxylate groups connect dinuclear CuI units as linkers In 2 and 4 polymeric chains are parallel to each other However the chains in 3 are arranged layer by layer where polymeric chains are parallel in one layer but chains in the neighboring layers are aligned with the angle 42° The detailed structural analyses demonstrate that in solid state the polymeric chains display different orientations which are controlled by interchain π–π and CH–π interactions In solid state all the coordination polymers are highly emissive at room temperature which exhibit phosphorescence characteristics and are assigned as metal to ligand charge transfer
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