Usman Muhammad, Ogebule Lydia, Castañeda Raúl, Oskolkov Evgenii, Timofeeva Tatiana
Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan.
Department of Chemistry, New Mexico Highlands University, Las Vegas, New Mexico, 87701, USA.
Acta Crystallogr E Crystallogr Commun. 2021 Nov 9;77(Pt 12):1243-1248. doi: 10.1107/S2056989021011361. eCollection 2021 Dec 1.
Two structurally different metal-organic frameworks based on Sr ions and 1,2,4,5-tetra-kis-(4-carb-oxy-phen-yl)benzene linkers have been synthesized solvothermally in different solvent systems and studied with single-crystal X-ray diffraction technique. These are poly[μ-4,4',4'',4'''-(benzene-1,2,4,5-tetra-yl)tetra-benzoato-distrontium(II)], [Sr(CHO)(CHNO)] , and poly[tetra-aqua-{μ-4,4'-[4,5-bis-(4-carb-oxy-phen-yl)benzene-1,2-di-yl]dibenzoato}tris-trontium(II)], [Sr(CHO)(HO)]. The differences are noted between the crystal structures and coordination modes of these two MOFs, which are responsible for their semiconductor properties, where structural control over the bandgap is desirable. Hydrogen bonding is present in only one of the compounds, suggesting it has a slightly higher structural stability.
基于Sr离子和1,2,4,5-四（4-羧基苯基）苯连接体的两种结构不同的金属有机框架已在不同溶剂体系中通过溶剂热法合成，并采用单晶X射线衍射技术进行了研究。它们分别是聚[μ-4,4',4'',4'''-(苯-1,2,4,5-四亚基)四苯甲酸根-二锶(II)]，[Sr₂(C₉H₄O₄)₂(CH₃NO)]，以及聚[四水合-{μ-4,4'-[4,5-双(4-羧基苯基)苯-1,2-二亚基]二苯甲酸根}三锶(II)]，[Sr₃(C₉H₄O₄)₂(H₂O)₄]。注意到这两种金属有机框架的晶体结构和配位模式存在差异，这决定了它们的半导体性质，而对带隙进行结构控制是很有必要的。氢键仅存在于其中一种化合物中，这表明它具有稍高的结构稳定性。
