Crystal structures and antitumour activity of 2-(2′-pyridyl)benzothiazole and its organotin complex

Synthesis and crystal structure determination of copper(II) and iron(III) complexes of 2-(2-pyridyl)benzothiazole

“…The crystal structure of pbt was reported in 1990 [20]. Here, we report the synthesis of three complexes involving the pbt ligand and the crystal structures of [Cu(pbt)(dmf)Cl 2 ] and [Fe(pbt)Cl 3 ].…”

“…In the preferred conformation of the pbt molecule, as revealed by its X-ray diffraction analysis [20], the N=C-C=N moiety is anti; so pbt needs a 180°con-formational rotation of the pyridyl moiety to enable N,Nchelation of the metal centres. Pbt is expected to bind to soft acceptor centres in S,N-chelating mode [25], but the only observed binding mode of pbt is N,N-chelation [23,[25][26][27][28].…”

Supramolecular aggregation patterns featuring Se⋯N secondary-bonding interactions in mono-nuclear selenium compounds: A comparison with their congeners

“…For example, none of the three polymorphs of the oxygen-congener of 5 feature S … O secondary-bonding interactions, Table 12. DPTHAZ [174] NAXDIZ02 [175] NAXDIZ05 [176] OLUQIX [93] OLUGEJ [93] --OLUNEQ [93] OLUFUY [93] SERZEU10 [177] LILMAV [178] VIGCOD [179] OLUGAF [93] --BECGAT [117] BECFUM [ adopting supramolecular tapes in their crystals, a polymorph is known for the telluriumcongener, that is, IMUTEQ01 [185] where the number of Te … N secondary-bonding interactions is reduced so a centrosymmetric dimer is generated instead.…”

A Comparative Study of the Optical and Electroluminescent Properties of EuIII Complexes with TTA and 2‐(2′‐Pyridyl)azoles: The Crystal Structure of [Eu(TTA)3(PBO)]

“…In addition to the great interest in functional metal complexes based on bpy and phen derivatives, structurally analogous 2‐(2′‐pyridyl)azoles such as 2‐(2′‐pyridyl)‐1,3‐benzoxazole (PBO), 2‐(2′‐pyridyl)‐1,3‐benzothiazole (PBT), and 2‐(2′‐pyridyl)benzimidazole (PBI), which are structurally similar to 2,2′‐bipyridine or 1,10‐phenanthroline N ‐oxide,16 have attracted special attention for use in electroluminescent devices, as radiopharmaceuticals based on metal complexes of [Re I (CO) 3 (L)X] (X = halide),17 when attached to Re V O 3+ and Tc V O 3+ cores,18 for complexation with Ru II ,19 Pt II ,20 Rh III and Pd II ,20b Mo V ,21 Sn II ,22 and Co II , Zn II and Cu II etc.,23 and because of their structural and physicochemical properties. We have reported the electroluminescence properties of Eu III complexes with PBI,8c,8i but so far little attention has been paid to lanthanide complexes with 2‐(2′‐pyridyl)azoles 24.…”