4-Cyanopyridine, a versatile mono- and bidentate ligand. Crystal structures of related coordination polymers determined by X-ray powder diffraction

Abstract

4-Cyanopyridine (4-CNpy) as a monodentate ligand in single or double chains or as a bidentate ligand in two-dimensional networks.

Synthesis, Crystal Structures and Properties of Ni(NCS)2‐3‐Cyanopyridine Coordination Compounds including a Ferromagnetic Layered Compound

“…[44][45][46] In the course of our systematic work, we became interested in Ni(II) compounds with cyanopyridines as coligands, which can act as a terminal or as a bridging ligand. [47][48] Some compounds consisting of transition metal thiocyanates with 3cyanopyridine are already reported. [49][50][51][52][53] For Ni only one discrete complex with the composition Ni(NCS) 2 (3-cyanopyridine) 4 is known.…”

Structural topologies involving energetically significant antiparallel π-stacking and unconventional N(nitrile)⋯π(fumarate) contacts in dinuclear Zn(ii) and polymeric Mn(ii) compounds: antiproliferative evaluation and theoretical studies

“…58 The wagging vibrations of the pyridine rings are observed at 659 and 697 cm −1 . 59 The absorption peak at 2240 cm −1 in compound 2 is due to the ν (C–N) stretching vibrations of the nitrile moiety of 3-CNpy 60 which suggests that 3-CNpy is not coordinated to the Mn( ii ) centre via the nitrile group. 61,62 The shifting of ring stretching vibrations of the 3-CNpy rings to 1475 and 1558 cm −1 in compound 2 indicates the coordination of 3-CNpy through the N atom of the pyridine ring.…”

Structure determination from unindexed powder data from scratch by a global optimization approach using pattern comparison based on cross-correlation functions

“…Dichloro-bis(pyridine-N)copper(II) {[CuCl 2 (C 5 H 5 N) 2 ] n , CuCP, Fig. 1} is a member of a series of coordination polymers which we reported recently (Krysiak et al, 2014;Zhao et al, 2017;Heine et al, 2018Heine et al, , 2020. The compound consists of infinite copper-halogen chains of trans-edge-sharing distorted octahedra.…”