Guest-triggered "Soma-Iwamoto-type" penetration complex {Fe(4-methoxypyrimidine)2[M(CN)2]2}·Guest (M = Ag, Au)

Kosuke Kitase; Daisuke Akahoshi; Takafumi Kitazawa

doi:10.1039/d2dt03716e

Guest-triggered "Soma-Iwamoto-type" penetration complex {Fe(4-methoxypyrimidine)₂[M(CN)₂]₂}·Guest (M = Ag, Au)

Dalton Trans. 2023 Feb 28;52(9):2571-2579. doi: 10.1039/d2dt03716e.

Authors

Kosuke Kitase¹, Daisuke Akahoshi², Takafumi Kitazawa^{1

3}

Affiliations

¹ Department of Chemistry, Toho University, Chiba 274-8510, Japan. kitazawa@chem.sci.toho-u.ac.jp.
² Department of Physics, Toho University, Chiba 274-8510, Japan.
³ Research Centre for Materials with Integrated Properties, Toho University, Chiba 274-8510, Japan.

PMID: 36752163
DOI: 10.1039/d2dt03716e

Abstract

Many laboratories have performed extensive studies on the spin-crossover (SCO) phenomenon. Herein, we synthesized novel "Soma-Iwamoto type" complexes containing a 4-methoxypyrimidine (4-MeOPmd) ligand, i.e., {Fe(4-MeOPmd)₂[Ag(CN)₂]₂} (1Ag), {Fe(4-MeOPmd)₂[Au(CN)₂]₂} (1Au), and {Fe(4-MeOPmd)₂[Ag(CN)₂]₂·0.25(4-MeOPmd)} (1Ag·0.25G). Moreover, we synthesized a 4,6-dimethoxypyrimidine (4,6-diMeOPmd) clathrate complex, i.e., {Fe(4-MeOPmd)₂[Ag(CN)₂]₂·0.25(4,6-diMeOPmd)} (2Ag·0.25G) and {Fe(4-MeOPmd)₂[Au(CN)₂]₂·0.25(4,6-diMeOPmd)} (2Au·0.25G). Some of these complexes, i.e., 1Ag·0.25G, 2Ag·0.25G, and 2Au·0.25G, demonstrated penetrated structures, which are very interesting given that they have rarely been reported to date. 1Au and 1Ag did not show the SCO phenomenon, 1Ag·0.25G showed a gradual multi-step SCO phenomenon, and 2Au·0.25G and 2Ag·0.25G showed an abrupt half SCO phenomenon.