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Highly emissive polymorphs of anhydrous cadmium tetracyanoplatinate and their solvated coordination networks
Dalton Transactions ( IF 3.5 ) Pub Date : 2022-06-13 , DOI: 10.1039/d2dt00918h
Ania S Sergeenko 1 , Damir Paripovic 1 , Chahinez Dab 2 , Pierre-François Blanc 2 , Christian Reber 2 , Daniel B Leznoff 1
Affiliation  

Two anhydrous polymorphs of cadmium cyanoplatinate Cd[Pt(CN)4] coordination polymers have been synthesized and thermally, spectroscopically, and structurally characterized. α-Cd[Pt(CN)4] and β-Cd[Pt(CN)4] are densely packed, highly emissive 3-D solids, with quantum yields of 0.85 (λem = 520 nm) and 0.79 (λem = 448 nm) respectively. Their mutual hydrate, Cd(H2O)[Pt(CN)4]·2H2O, forms a complex 3-D coordination polymer with Cd–O–Cd bridges and Pt–Pt interactions. Additionally, exposure of solid α-Cd[Pt(CN)4] and β-Cd[Pt(CN)4] to several solvent vapours results in the formation of 2-D cyanometallate sheets of the adduct compounds CdL2[Pt(CN)4] (L = DMSO, DMF, and pyridine). Cd(pyridine)2[Pt(CN)4] shows a significantly lower quantum yield (0.32) in comparison to the parent Cd[Pt(CN)4] coordination polymers. Upon heating CdL2[Pt(CN)4] preferentially forms the kinetic product α-Cd[Pt(CN)4].

中文翻译:

无水四氰铂酸镉的高发射多晶型物及其溶剂化配位网络

氰铂酸镉Cd[Pt(CN) 4 ] 配位聚合物的两种无水多晶型物已被合成,并在热学、光谱学和结构上进行了表征。α-Cd[Pt(CN) 4 ] 和 β-Cd[Pt(CN) 4 ] 是密集排列的高发射 3-D 固体,量子产率为 0.85 ( λ em = 520 nm) 和 0.79 ( λ em = 448 纳米)分别。它们的相互水合物Cd(H 2 O)[Pt(CN) 4 ]·2H 2 O 形成具有Cd-O-Cd 桥和Pt-Pt 相互作用的复杂3-D 配位聚合物。此外,固体 α-Cd[Pt(CN) 4 ] 和 β-Cd[Pt(CN) 4] 到几种溶剂蒸气中会形成加合物化合物 CdL 2 [Pt(CN) 4 ](L = DMSO、DMF 和吡啶)的二维氰基金属酸盐片。与母体 Cd[Pt(CN) 4 ] 配位聚合物相比, Cd(吡啶) 2 [Pt(CN) 4 ] 显示出显着较低的量子产率 (0.32)。在加热CdL 2 [Pt(CN) 4 ] 时,优先形成动力学产物α-Cd[Pt(CN) 4 ]。
更新日期:2022-06-13
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