title: Temperature-dependent supramolecular motif in coordination compounds.
abstract: The temperature-dependent structures of 1D and 2D HgCl(2) coordination polymers containing a N-(2-pyridylmethyl)-2-pyrazinecarboxamide flexible ligand with different motifs have been investigated. Results show that when the reaction was carried out at 60 degrees C, a 2D framework containing cubane-like units was generated, whereas in room temperature, L-bridged pentanuclear units, which are extended to a 1D band through a Hg-Cl-Hg-bridged compound, will be obtained.
authors.affiliation: Department of Chemistry, Shahid Beheshti University, G. C. Evin, Tehran 1983963113, Iran. h-khavasi@sbu.ac.ir
authors.forename: Hamid Reza
authors.initials: HR
authors.lastname: Khavasi
authors.forename: Bahareh Mir
authors.initials: BM
authors.lastname: Mohammad Sadegh
mesh_terms: D008024:Ligands; D046911:Macromolecular Substances / Q000138:chemical synthesis / Q000737:chemistry; D008627:Mercuric Chloride / Q000737:chemistry; D008958:Models, Molecular; D008968:Molecular Conformation; D009941:Organomercury Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D013696:Temperature
chemical_list: D008024:Ligands; D046911:Macromolecular Substances; D009941:Organomercury Compounds; D011108:Polymers; D008627:Mercuric Chloride