Kentaro Aoki, Kazuya Otsubo, Yukihiro Yoshida, Yojiro Kimura, Kunihisa Sugimoto, Hiroshi Kitagawa
Inorganic chemistry 2021 Nov 01Metal string complexes, linearly aligned transition metal arrays coordinated with the multidentate organic ligands, have gained much attention both in unique electronic/structural properties and in potential applications as conductive molecular nanowires. Here we report on a dimerized NiII trinuclear complex, [Ni6Cl2(dpa)8](I5)2·0.25I2 (dpa- = 2,2'-dipyridylamide anion). X-ray structural analysis revealed that two trinuclear moieties are bridged by a Cl anion to form a dimerized string structure. This is the first example of two Ni string complexes that are connected. In the electronic absorption and Raman spectra, characteristic absorption bands and a vibration mode based on the dimer string structure were observed. In the solid state, dimer complexes align in one dimension in an MMMXMMMX (M = metal, X = halogen) manner, leading to the intra- and interdimer antiferromagnetic interactions.
Kentaro Aoki, Kazuya Otsubo, Yukihiro Yoshida, Yojiro Kimura, Kunihisa Sugimoto, Hiroshi Kitagawa. Synthesis and Magnetic Properties of a Dimerized Trinuclear Ni String Complex, [Ni6Cl2(dpa)8](I5)2·0.25I2 (dpa- = 2,2'-Dipyridylamide Anion). Inorganic chemistry. 2021 Nov 01;60(21):16029-16034
PMID: 34665611
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