New neutral and anionic thiocyanate complexes of Y(III) and Eu(III) with 2,2′-bipyridine and 1,10-phenanthroline: Synthesis, structures, thermal behavior and photophysical properties

Mononuclear Dysprosium Thiocyanate Complexes with 2,2′‐Bipyridine and 1,10‐Phenanthroline: Synthesis, Crystal Structures, SIM Behavior, and Solid‐Phase Transformations

“…In our previous studies,, we synthesized europium and terbium thiocyanate hydrates with the formula [Ln(H 2 O) 5 (NCS) 3 ] · H 2 O (Ln = Eu, Tb), according to our procedure, by dissolution of the appropriate oxide in an aqueous HNCS solution. The complexes were isolated and fully characterized by structural and analytical methods.…”

“…Complexes 2 – 5 were synthesized by procedures described in ref . Single‐phase products 2 – 5 are isostructural with Y and Eu analogs.…”

“…The compound [Dy(H 2 O)(bpy) 2 (NCS) 3 ] · 0.5(bpy) · H 2 O ( 2 ) (Figure ) is isomorphous with the compounds [Ln(H 2 O)(bpy) 2 (NCS) 3 ] · 0.5(bpy) · H 2 O (Ln = Y and Eu) . Single crystals suitable for X‐ray diffraction were obtained for the Y compound, whereas the structures of the Eu analogue and compound 2 were established by powder XRD (Table S2). The structure of the Ln polyhedron is the same in all compounds.…”

“…In the series of N‐donor ligands, the thiocyanate ion NCS – occupies a special place, due to its structural features, charge distribution, and coordination capacity. The published studies of homo‐ and heteroleptic neutral and ionic rare‐earth thiocyanates are scarce . Interest in these compounds is associated with their actual and promising applications.…”

“…The structural data on homo‐ and heteroleptic neutral and ionic yttrium and lanthanide thiocyanates were compiled and integrated in ref . Investigations of the magnetic behavior of lanthanide thiocyanates are also of considerable interest . The magnetic behavior of the complexes [Tb(NCS) 3 (H 2 O) 5 ] · H 2 O and [Tb(18C6)(NCS) 3 ] (18C6 = 18‐crown‐6) and two series of europium compounds, namely, [Eu(H 2 O) 5 (NCS) 3 ] · H 2 O, [Eu 3 (H 2 O) 12 (EtOH) 3 (NCS) 9 ], [Eu(18C6)(NCS) 3 ] · 0.5(18C6), and [Eu(18C6)(NCS) 3 ], and [Eu(NCS) 3 (H 2 O)(bpy) 2 ] · 0.5bpy · H 2 O, [Hbpy][Eu(NCS) 4 (bpy) 2 ] · H 2 O, [Eu(NCS) 3 (H 2 O)(phen) 2 ] · phen · 0.5H 2 O, and [Hphen][Eu(NCS) 4 (phen) 2 ], have been studied.…”