Journal of Solid State Chemistry ( IF 3.3 ) Pub Date : 2020-03-07 , DOI: 10.1016/j.jssc.2020.121312 Vasile Lozovan , Victor Ch. Kravtsov , Eduard B. Coropceanu , Anatolii V. Siminel , Olga V. Kulikova , Natalia V. Costriucova , Marina S. Fonari
Reactions of zinc and cadmium sulfates with 1,2-bis(pyridin-3-ylmethylene)hydrazine (3-bphz), 1,2-bis(pyridin-4-ylmethylene)hydrazine (4-bphz), and two methylated derivatives, 1,2-bis(1-(pyridin-3-yl)ethylidene)hydrazine (3-bpmhz) and 1,2-bis(1-(pyridin-4-yl)ethylidene)hydrazine (4-bpmhz) resulted in eight coordination compounds. For Zn(II) the structural landscape includes binuclear complexes and two-dimensional coordination polymers, [Zn2(3-bphz)(H2O)10](SO4)2.4H2O (1), [Zn2(SO4)2(3-bphz)(H2O)4]n (2), [Zn2(3-bpmhz)3(H2O)8](SO4)2 (3), and {[Zn(SO4)(4-bpmhz)(H2O)2] 1.5(H2O)·0.25(4-bpmhz)}n (4). For Cd(II) two- and three-dimensional coordination networks, {[Cd(SO4)(4-bpmhz)(H2O)1.32]·1.2(H2O)}n (5), [Cd(SO4)(3-bpmhz)(H2O)]n (6), {[Cd(SO4)(4-bphz)(H2O)]·(H2O.C2H5OH)}n (7), and [Cd3(SO4)3(3-bphz)3(H2O)2]n (8) are reported. The extension of crystal structures up to two- and three-dimensional coordination networks has been achieved via bidentate bridging neutral azine ligands, and bi- and tridentate bridging sulfate anions that provide the metal-sulfate inorganic scaffolds in the forms of different one- and two-dimensional coordination arrays. The new crystalline solids were studied by X-ray single crystal and powder diffraction, spectroscopic and thermogravimetric analytical methods. The water-sulfate-anion interplay, similarities and dissimilarities in the coordination networks' topologies, the inherent chiralities of coordination networks, an impact of ligands’ methylation on solvent uptake, and the emission events accompanying the thermal stress are demonstrated and discussed.
中文翻译:
硫酸根阴离子在具有四个嗪配体的Zn和Cd配位网络的固态结构演变和发射性质中相互作用
硫酸锌和镉与1,2-双(吡啶-3-基亚甲基)肼(3-bphz),1,2-双(吡啶-4-基亚甲基)肼(4-bphz)和两种甲基化衍生物的反应, 1,2-双(1-(吡啶-3-基)亚乙基)肼(3-bpmhz)和1,2-双(1-(吡啶-4-基)亚乙基)肼(4-bpmhz)配位化合物。对于Zn(II),结构图包括双核络合物和二维配位聚合物[Zn 2(3-bphz)(H 2 O)10 ](SO 4)2 。4H 2 O(1),[Zn 2(SO 4)2(3-bphz)(H 2 O)4 ] n(2),[Zn 2(3-bpmhz)3(H 2 O)8 ](SO 4)2(3)和{[Zn(SO 4)(4-bpmhz)(H 2 O)2 ] 1.5 (H 2 O)·0.25(4-bpmhz)} n(4)。对于Cd(II)二维和三维协调网络,{[Cd(SO 4)(4-bpmhz)(H 2 O)1.32 ]·1.2(H 2 O)} n(5),[Cd(SO 4)(3-bpmhz)(H 2 O)] n(6),{[CD(SO 4)(4-bphz)(H 2 O)]·(H 2 ö 。 ç 2 ħ 5 OH)} Ñ(7),和[CD 3(SO 4)3(3-报告了bphz)3(H 2 O)2 ] n(8)。晶体结构扩展到二维和三维配位网络已通过双齿桥接中性嗪配体,以及双齿和三齿桥接硫酸根阴离子,以不同的一维和二维配位阵列形式提供金属硫酸盐无机支架。通过X射线单晶和粉末衍射,光谱和热重分析方法研究了新的结晶固体。讨论了水-硫酸盐-阴离子相互作用,配位网络拓扑结构的异同,配位网络的固有手性,配体甲基化对溶剂吸收的影响以及伴随热应力的发射事件。