Impact of Reaction Conditions on the Structures of Nickel(II) Complexes Based on 3‐(4‐Carboxyphenyl)propionic Acid

Abstract

Two new nickel(II) complexes, [Ni(4,4Ј-bpy)(H 2 O) 4 ] n · n(cpp)·0.5nH 2 O (1) and [Ni(cpp)(4,4Ј-bpy)(H 2 O) 2 ] n (2) [4,4Ј-bpy = 4,4Ј-bipyridine, H 2 cpp = 3-(4-carboxyphenyl)propionic acid] were synthesized and characterized by single-crystal X-ray diffraction, elemental analysis, IR spectroscopy, and thermal analysis. In complex 1, Ni II ions are bridged by 4,4Ј-bpy into 1D chains, and cpp ligands are

Crystal structure and Hirshfeld surface analysis of dichlorido(methanol-κO)bis(2-methylpyridine-κN)copper(II)

“…The methylpyridine rings form angles of 83.96 (8) and 85.70 (8) with respect to the basal plane of the coordination polyhedron, thereby plausibly blocking the sixth coordination position at the copper atom. The Cu-O bond distance of 2.353 (2) Å is relatively short for an apical atom in typical copper(II) tetragonal-pyramidal structure, whereas the Cu-N bond lengths [Cu1-N1= 2.031 (2) Å , Cu1-N2 = 2.017 (2) Å ] agree well with those reported for related structures (Wang et al, 2006;Gong et al, 2009;Hu & Zhang, 2010;Li, 2011;Sun et al, 2013;Sanram et al, 2016).…”

Synthesis and crystal structure of a 6-chloronicotinate salt of a one-dimensional cationic nickel(II) coordination polymer with 4,4′-bipyridine

“…The Ni1-O1 and Ni1-O2 bond lengths [2.0643 (15) Å and 2.0850 (13) Å , respectively] are very similar to each other and comparable to those seen in the related structures containing {[Ni(4,4 0 -bpy)(H 2 O) 4 ] 2+ } n cation. The Ni-N1 bond length [2.0715 14Å ] is also in agreement with those reported for the structures containing the {[Ni(4,4 0bpy)(H 2 O) 4 ] 2+ } n cation (Zheng et al, 2002;Gong et al, 2009;Li, 2011;Gao et al, 2016;Sun et al, 2013;Wang et al, 2006;Sanram et al, 2016;Hu & Zhang, 2010).…”

“…This was surprising, as we expected to obtain a coordination polymer similar to the one obtained with the closely related 6-fluoronicotinate anion under the same experimental conditions (Politeo et al, 2020). The polymeric {[Ni(4,4 0 -bpy)(H 2 O) 4 ] 2+ } n cation is already well known from the literature, as it crystallizes with various carboxylate anions such as fumarate (Zheng et al, 2002), 3-[4-(carboxymethoxy) phenyl]propanoate (Gong et al, 2009), 3,3 0 -(p-phenylene)diacrylate (Li, 2011), 2-carboxy-4-[4-(3-carboxy-4-carboxylatophenoxy)phenoxy]benzoate (Gao et al, 2016), 3-(4-carboxyphenyl)propanoate (Sun et al, 2013), 1,2,4,5-benzenetetracarboxylate (Wang et al, 2006), 1,4phenylenedipropanoate (Sanram et al, 2016) and 2,3naphthalenedicarboxylate (Hu & Zhang, 2010).…”

A series of entangled MOFs constructed from flexible dipyridyl piperazine and rigid dicarboxylate: interpenetration, self-penetration, and polycatenation

“…5). 65 In 4, as mentioned, the sql subnet layers are interlocked in a rotating fashion as an extended ring net of the topology type 8T761, 56,[66][67][68][69][70] giving rise to a 3D polycatenane network (Fig. 5a).…”