Crystal engineering with copper and melamine

0544600 - ÚFCH JH 2022 RIV GB eng J - Journal Article
Bernabe Virseda, I. - Siddiqui, S. A. - Prado-Roller, A. - Eisterer, M. - Shiozawa, Hidetsugu
Crystal engineering with copper and melamine.
RSC Advances. Roč. 11, č. 39 (2021), s. 23943-23947. E-ISSN 2046-2069
R&D Projects: GA ČR(CZ) GA19-15217S; GA MŠMT(CZ) 8J19AT026
Institutional support: RVO:61388955
Keywords : metal-organic frameworks * coordination polymer * magnetic-properties * anomalous paramagnetism * chains * oxide
OECD category: Physical chemistry
Impact factor: 4.036, year: 2021
Method of publishing: Open access

Coordination complexes and polymers are central in inorganic and materials chemistry as a variety of metal centers and coordination geometries lead to a diverse range of interesting properties. Here, size and structure control of gem-like quality monocrystals is demonstrated at room temperature. Using the same set of precursors, the copper-to-melamine molar ratio is adjusted to synthesize either a novel coordination complex of dinuclear copper and melamine (Cu2M1), or a barely-studied coordination polymer of zigzag copper-chlorine chains (Cu4M1). Crystals of the former are dark green and square with a size up to 350 mu m across. The latter is light green, octagonal, and as large as 5 mm across. The magnetic properties of both crystals reflect the low-dimensional arrangements of copper. The magnetic susceptibility of Cu2M1 is modelled with a spin-1/2 dimer, and that of Cu4M1 with a spin-1/2 one-dimensional Ising chain. Controlled synthesis of such quality magnetic crystals is a prerequisite for various magnetic and magneto-optical applications.
Permanent Link: http://hdl.handle.net/11104/0321440