Mechanochemical synthesis and characterization of kinetically and thermodynamically stable polymorphs of a lead(II) coordination polymer

Thermodynamically stable and metastable coordination polymers synthesized from solution and the solid state

“…Moreover, in several cases crystalline phases are accessible that cannot be prepared in solution because they are metastable, including polymorphic or isomeric modifications. [22][23][24][25][26][27][28] This is the case, e.g., for thermal decomposition reactions of precursor compounds based on transition metal thio-and selenocyanates. If they consist of less chalcophilic metal cations, most of these compounds contain only terminally N-bonded anionic ligands, since the additional coordination to sulfur, leading to the formation of a bridging coordination, is unfavourable.…”

Zn(NCS)2‐3‐cyanopyridine Coordination Compounds: Synthesis, Crystal Structures, and Thermal Properties

“…In most cases coordination compounds are synthesized from solution, but there are also some examples, in which such compounds were prepared by solid‐state routes, like, e.g. molecular milling or reactions from the melt . Another method that can be used is based on thermal decomposition of suitable precursor compounds, that upon heating lose their co‐ligands stepwise and transform quantitatively and irreversibly into new co‐ligand deficient phases.…”

Resolvable polymorphism in an intergrowth of two modifications of tris(diethyldithiocarbamato)antimony

“…The polyhedra around the metal atoms (Sb, Bi and Pb) in these pairs of polymorphic modifications are generally not identical. Polymorphism is also found in a few lower-coordinate lead compounds (Akhbari & Morsali, 2015;Easterday et al, 2014;Giffard et al, 2008;Mohammadnezhad et al, 2010).…”