Synthesis and Characterization of New Metal-Organic Frameworks Based on Tetracyanoplatinate~(II) and AyV'-bis (2-hydroxyethyl)ethylenediamine: Single Crystal Structures of Zn11 and Cd11 Complexes Along with Magnetic Properties of Ni~(II) and Cu~(II) Complexes

摘要

Characterization and synthesis of novel cyano bridged coordination compounds [Ki(bishydeten)Pt(CN)4] (1), [Cu(bishydeten)?i(CN)4] (2), [Zn{bishydeten)?t{CK)4] (3), [Cd(bishydetenyPt(CN)4] (4) [bishydeten = NJf-bis(2-hydroxyethyl)ethylenediamine (QHig^C^)] were reported herein. The IR spectra of these coordination compounds verified the formation of aforementioned complexes. The ground state of the paramagnetic electron in the Cu11 located in tetragonal distorted octahedral sites (D4h) was found to be dx2_y2 for complex 2. As for complex 1, an EPR signal was not observed because of diamagnetic property of the Pt11 and momentary relaxation times of the Ni". All complexes followed identical decomposition mechanism in thermal analysis and thermal stabilities of complexes changed in the order of 1 > 4 > 3 > 2. Both 3 and 4 exhibit polymeric structure according to X-ray single structure analysis. While bishydeten coordinated with three donor atoms (N,W, and O) in complex 3, it acts as a bidentate ligand (N, and N1) in complex 4. Magnetic properties of complexes 1-2 at 15-300 K temperature range were determined as antiferromagnetic with Weiss constants = -2.619 and -0.847 K respectively.