Assemblies of Two Mixed-Ligand Coordination Polymers with Two-Dimensional Metal−Organic Frameworks Constructed from M(II) Ions with Croconate and 1,2-Bis-(4-pyridyl)ethylene (M = Cd and Zn)

Abstract

Supplementary Materials: Stable1. Bond Lengths (Å) and Anglse (deg) for Cd(1) and Cd(2) Coordination Spheres in complex 1 a. Stable2. Bond Lengths (Å) and Anglse (deg) for Zn(1) and Zn(2) Coordination Spheres in complex 2. Sfigure1. (a) Distorted pentagonal bipyramidal coordination sphere about Cd(1) with atom labeling scheme. (b) Distorted octahedral coordination sphere about Cd(2) with atom labeling scheme (ORTEP drawing, 50 % thermal ellipsoids). Sfigure2. Distorted octahedral coordination sphere about (a) Zn(1) and (b) Zn(2) with atom labeling scheme (ORTEP drawing, 50 % thermal ellipsoids). Stable 1. Bond Lengths (Å) and Anglse (deg) for Cd(1) and Cd(2) Coordination Spheres in complex 1 a Cd(1)−O(1) 2.569(4) Cd(2)−O(1) 2.418(4) Cd(1)−O(2) 2.363(3) Cd(2)−O(5) 2.339(4) Cd(1)−O(3) i 2.398(3) Cd(2)−O(9) ii 2.325(4) Cd(1)−O(4) i 2.431(3) Cd(2)−O(10) ii 2.319(4) Cd(1)−O(6) 2.469(4) Cd(2)−O(11) w 2.257(4) Cd(1)−O(10) 2.292(4) Cd(2)−N(2) 2.268(5) Cd(1)−N(1) 2.248(5)

Poly[[[aqua(2,2′-bipyridine-κ2N,N′)manganese(II)]-μ-croconato-κ4O,O′:O′′,O′′′] monohydrate]: a one-dimensional coordination polymer connected by hydrophilic–hydrophilic and lipophilic–lipophilic interactions at 135 K

“…The [Cd 2 (C 5 O 5 ) 2 (4,4 0 -bipy)(H 2 O)] n complex (Wang et al, 2003) and the isostructural {[Cd 2 -(C 5 O 5 ) 2 (bipye)(H 2 O)]Á2H 2 O} n [bipye is 1,2-bis(4-pyridyl)ethylene; Wang, Tseng et al, 2007] complexes exhibit a tightlybonded bilayer two-dimensional framework, which is characterized by a tris-bidentate bridging mode in the [Cd(C 5 O 5 )] n chain. The {[Cu 2 (C 5 O 5 ) 2 (bipye) 2 ]ÁH 2 O} n complex shows an undulating monolayer two-dimensional framework (Ghoshal et al, 2005), while {[Zn 2 (C 5 O 5 ) 2 (bipye) 2 ]ÁH 2 O} n (Wang, Tseng et al, 2007) exhibits a brick-wall-like two-dimensional structure. Similar bilayer two-dimensional frameworks can be found in the group of isostructural complexes [M(C 5 O 5 )-(bipya)] n [M = Mn, Fe, Co, Cd; bipya is 1,2-bis(4-pyridyl)ethane; .…”

Synthesis, Structural Characterization and Ligand-Enhanced Photo-Induced Color-Changing Behavior of Two Hydrogen-Bonded Ho(III)-Squarate Supramolecular Compounds

“…The inherent character of lanthanide ions with high affinity for oxygen atoms and high coordination numbers, result in the formation of a number of MOFs with flexible coordination geometry and various structural dimensionality from multi-carboxylate ligands [13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29]. The squarate, C 4 O 4 2− , has been widely used as a polyfunctional ligand, including (1) acts as a bridging ligand with various coordination modes (μ 2 to μ 6 bridges shown in Scheme 1) to build up many coordination polymers with novel extended networks, including 1D chain, 2D layer, 3D cube- and cage-like frameworks and so forth and (2) behaviors as hydrogen bond donor, acceptor or π−π constructor for the assembly of extended supramolecular architecture [30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63]. In the previous investigation, several 2D and 3D LnMOFs constructed via the bridges of lanthanide and squarate ligand with various coordination modes have been synthesized under hydrothermal or solvothermal conditions [64,65,…”

Coordination polymers of CdII and PbII with croconate show remarkable differences in coordination patterns: a structural and spectroscopic study

“…While this makes croconate quite useful in building large crystal superstructures, the difficulty in synthesizing croconate on a large scale has limited the volume of croconate research (Seitz & Imming, 1992). The bulk of the research into metal-croconate coordination involves either alkali metals (Baenziger & Williams, 1966;Ranganathan & Kulkarni, 2002;Braga et al, 2002) or first-row transition metals (West & Niu, 1963;Bottei et al, 1979;Speier et al, 1997;Dumestre et al, 1998;Sain et al, 2002;Wang et al, 2002Wang et al, , 2007bManna et al, 2007;Ferreira et al, 2007;Massoud et al, 2017). Several of these structures contain other bridging ligands, such as 4,4 0 -bipyridine (Sain et al, 2002;Wang et al, 2003;Manna et al, 2007), 2,2 0 -bipyrimidine (Wang et al, 2007a), imidazole (Deguenon et al, 1990), or histidine (Deguenon et al, 1991).…”

“…Several of these structures contain other bridging ligands, such as 4,4 0 -bipyridine (Sain et al, 2002;Wang et al, 2003;Manna et al, 2007), 2,2 0 -bipyrimidine (Wang et al, 2007a), imidazole (Deguenon et al, 1990), or histidine (Deguenon et al, 1991). There is a total of six Cd-croconate structures in the Cambridge Structural Database (Version 5.40; Groom et al, 2016), namely Cdcroconate mixed-ligand MOFs with 4,4 0 -bipyridine (Wang et al, 2003), 2,2 0 -bipyrimidine linkers (Wang et al, 2007a), or 1,2bis(pyridin-4-yl)ethylene (Wang et al, 2004(Wang et al, , 2007b, and using exclusively croconate anions as the building blocks for making MOFs (Maji et al, 2003). Recently, croconate was used as a receptor for Cd in a hybrid system containing other auxiliary ligands (Gan et al, 2015).…”