One dimensional metallophosphate coordination polymers{[M(dtbp)_(2)(azopy)(H_(2)O)_(2)]·(azopy)}_(x)(M=Mn(1);Co(2);Cu(3);Cd(4))have been synthesized from the reaction of a suitable metal precursor with di-tert-bu...One dimensional metallophosphate coordination polymers{[M(dtbp)_(2)(azopy)(H_(2)O)_(2)]·(azopy)}_(x)(M=Mn(1);Co(2);Cu(3);Cd(4))have been synthesized from the reaction of a suitable metal precursor with di-tert-butylphosphate(dtbp-H)in the presence of ditopic linker 4,4’-azobipyridine(azopy)in a 1:2:2 stoichiometric ratio.Isostructural compounds 1–4 have been characterized by analytical and spectroscopic methods and single crystal X-ray diffraction studies.Single crystal X-ray diffraction measurements further reveal that compounds 1–3(all C2/c)and 4(P1)are linear 1D coordination polymers.The uncoordinated 4,4’-azobipyridine in the lattice is responsible for the conversion of these 1D coordination polymers into 3D supramolecular assemblies through O–H⋯N hydrogen bonding interactions between coordinated water and N-centers of an azopy ligand.Similar reactions carried out using 1,2-bis(4-pyridyl)-ethylene(bpe)as the linker yielded compounds having the formula{[M(dtbp)_(2)(bpe)(H_(2)O)_(2)]·(bpe)}_(x)(M=Mn(5);Co(6);Cu(7);Ni(8)).Compounds 5–8 have been characterized by analytical and spectroscopic methods.Preliminary single crystal X-ray diffraction studies carried out on poorly diffracting crystals of 5 and 6 establish their isostructural nature to 1–4,also displaying a similar supramolecular aggregation behaviour.A longer ditopic N,N’-donor ligand,1,2-bis(pyridin-3-ylmethylene)hydrazine(bph),has been used in place of bpe/azoby to synthesize 1-dimensional coordination polymers[{M(bph)(H_(2)O)_(4)}{(dtbp)_(2)}](M=Ni(9)and M=Co(10))and[Cd(bph)_(3)(dtbp)_(2)]_(n)(11)which have completely different structural motifs when compared to 1–4.展开更多
文摘One dimensional metallophosphate coordination polymers{[M(dtbp)_(2)(azopy)(H_(2)O)_(2)]·(azopy)}_(x)(M=Mn(1);Co(2);Cu(3);Cd(4))have been synthesized from the reaction of a suitable metal precursor with di-tert-butylphosphate(dtbp-H)in the presence of ditopic linker 4,4’-azobipyridine(azopy)in a 1:2:2 stoichiometric ratio.Isostructural compounds 1–4 have been characterized by analytical and spectroscopic methods and single crystal X-ray diffraction studies.Single crystal X-ray diffraction measurements further reveal that compounds 1–3(all C2/c)and 4(P1)are linear 1D coordination polymers.The uncoordinated 4,4’-azobipyridine in the lattice is responsible for the conversion of these 1D coordination polymers into 3D supramolecular assemblies through O–H⋯N hydrogen bonding interactions between coordinated water and N-centers of an azopy ligand.Similar reactions carried out using 1,2-bis(4-pyridyl)-ethylene(bpe)as the linker yielded compounds having the formula{[M(dtbp)_(2)(bpe)(H_(2)O)_(2)]·(bpe)}_(x)(M=Mn(5);Co(6);Cu(7);Ni(8)).Compounds 5–8 have been characterized by analytical and spectroscopic methods.Preliminary single crystal X-ray diffraction studies carried out on poorly diffracting crystals of 5 and 6 establish their isostructural nature to 1–4,also displaying a similar supramolecular aggregation behaviour.A longer ditopic N,N’-donor ligand,1,2-bis(pyridin-3-ylmethylene)hydrazine(bph),has been used in place of bpe/azoby to synthesize 1-dimensional coordination polymers[{M(bph)(H_(2)O)_(4)}{(dtbp)_(2)}](M=Ni(9)and M=Co(10))and[Cd(bph)_(3)(dtbp)_(2)]_(n)(11)which have completely different structural motifs when compared to 1–4.
