A series of transition metal coordination polymers with azide and flexible zwitterionic dicarboxylate ligands was synthesized structurally magnetically characterized. These compounds are formulated as [M(2)(L(1))(N(3))(4)] (L(1) = 4,4'-trimethylenedipyridinio-N,N'-diacetate M Mn, 1; Co, 2; Ni, 3) [ML(2)(N(3))(6)(H(2)O)(2)] (L(2) 4,4'-dipyridinio-N,N'-diacetate 4; 5). The isomorphous 1-3 consist two-dimensional layers in which the anionic uniform chains mixed triple bridges (two end-on (EO)...

Four new inorganic-organic hybrid coordination polymers in which 1D or 2D manganese(II) azido inorganic motifs are interlinked into higher-dimensional networks have been synthesized by use of a series bis(pyridyl)-type organic bridging ligands (linkers) with different side groups and/or orientations. The dimensionality and the topology motif whole structure sensitive to linkers used. Compounds 1 3 3D pillared-layer architectures: 1, Mn(II) layers alternate double end-on (EO) single...

Unprecedented [Mn(II)(3)(micro(3)-F)(micro-N-N)(3)] triangular clusters with tetrazole ligands are linked by Mn(II) ions to generate a novel spin-frustrated 2D lattice exhibiting antiferromagnetic ordering.

The reactions of manganese(II) acetate or perchlorate, sodium azide, and the inner-salt-type dicarboxylate ligand 1,3-bis(4-carboxylato-1-pyridinium)propane (L) under different conditions yielded four MnII coordination polymers with mixed azide carboxylate bridges: {[Mn(L)(N3)]ClO4·0.5H2O}n (1), {[Mn2(L)2(N3)2][Mn(N3)4(H2O)2]·2H2O}n (2), {[Mn2(L)2(N3)2(H2O)2]Br(N3)·2H2O}n (3), [Mn4 (L)2(N3)8]n (4). compounds exhibit great diversity in their structures magnetic properties. Both 1 2 contain...

Four new coordination polymers with flexible bis(tetrazole)alkane ligands as bridges and thiocyanate ions terminal ligands, [Co(btze)2(SCN)2]n (1), [Co(btze)3(SCN)2]n (2), [Co(btzb)2(SCN)2]n (3), [Co(btzh)2(SCN)2]n (4), have been synthesized characterized, where btze = 1,2-bis(tetrazol-1-yl)ethane, btzb 1,4-bis-(tetrazol-1-yl)butane, btzh 1,6-bis(tetrazol-1-yl)hexane. The short ligand gives singly bridged 2D square grid layers 2-fold parallel interpenetration (1) or 1D linear chains deep...

Using trans-stilbene-4,4′-dicarboxylic acid (H2STDC) as bridging ligand, we have prepared four new coordination polymers with different transition metal ions, [Cu(STDC)(H2O)(py)2]·2py (1), [Cd(STDC)(py)2]·0.5py (2), [Co(STDC)(py)2]·0.5py (3), and [Ni2(STDC)2(py)4(H2O)]·py·0.5H2O (4), by hydrothermal reactions in the presence of pyridine (py). In compound 1, single ions are linked into quasi-linear chains organic further assembled 3D supermolecular architectures through strong O−H (coordinate...

A new two-dimensional (2D) coordination polymer with mixed pyrimidine-2-carboxylate (pymca) and oxalate (ox) bridges, [Mn(2)(pymca)(2)(ox)(H(2)O)(2)](n) (1), was synthesized by a hydrothermal reaction involving the in situ formation of pymca ox ligands from 2-cyanopyrimidine (pymCN), its structure magnetic properties were characterized. The dianionic monoanionic are both potentially bis(chelating) have been used to construct anionic cationic 2D honeycomb networks [(6,3) net], respectively....

A series of isomorphous 3D Co(II)(1-x)Ni(II)(x) MOFs based on ferromagnetic chains show SCM-type slow relaxation and the Co-rich system can exhibit a higher blocking temperature than both Co(II) Ni(II) parent materials.

One-dimensional zigzag coordination chains in four different directions are hierarchically entangled to generate an unprecedented 3D interwoven framework, which exhibits permanent porosity and guest selectivity.

A novel 3D assembly of molecular cobalt cubes, where the mixed-valence cubes are linked by macrocyclic nickel(II) complexes through coordination and hydrogen bonds, has been constructed metalloligand strategy.

The assembly of the asymmetric bis(bidentate) 2-pyrimidinecarboxylate ligand with Cd(II) produces a metal-organic framework RHO zeolitic topology, while 5-(2'-pyrimidyl)tetrazolate leads to square grid networks.

A 2-fold interpenetrated metal−organic framework displaying intense yellow fluorescence is constructed from [Zn4O(COO)6] clusters and a new dicarboxylate ligand bearing the fluorene chromophore fluorene-2,7-dicarboxylic acid. The secondary building unit exhibits unusual coordination features leads to rare 3D pillared kagomé net topology (324865).

Two 3D materials in which the same copper(II)−azido layers are linked by organic pillars of different lengths have been characterized, and exclusive influences pillar length on interlayer magnetic interactions bulk behaviors investigated.

Three isomorphous metal-organic frameworks of formula [M(ppdc)(H(2)O)(2)](n) [M = Mn(II), Fe(II), and Co(II)] were synthesized from sodium p-phenylenediacrylic (Na(2)ppdc). Crystallographic studies revealed that the compounds are layer-pillared 3D in which square-grid M(II) layers with single carboxylate bridges interlinked by long organic spacers large interlayer separations about 13 Å. Magnetic investigations indicated they all display intralayer antiferromagnetic interactions through...

Solvothermal reactions of m-phenylenediacrylic acid (H2mpda) and zinc(II) salts in the presence different bis(pyridyl) ancillary ligands afforded a series supramolecular interpenetrated coordination architectures with formula [Zn(mpda)(bpee)]n (1), [Zn(mpda)(bpea)]n (2), [Zn(mpda)(bpp)]n·2.5H2O (3) (bpee = 1,2-bis(4-pyridyl)ethylene, bpea 1,2-bis(4-pyridyl)ethane, bpp 1,3-bis(4-pyridyl)propane). X-ray analyses revealed that all compounds feature tetrahedral-based geometry around Zn(II),...

Solvothermal reactions of trans-stilbene-4,4′-dicarboxylic acid (H2STDC) and zinc(II) acetate in the presence systematically varied terminal ligands afforded a series supramolecular architectures with formula [Zn(STDC)(py)2]·py (1), [Zn(STDC)(bipy)(H2O)]·0.5py·H2O (2), [Zn(STDC)(biql)] (3), [Zn(STDC)(phen)]·solv (solv = DMSO, 4a; DMF, 4b), where py pyridine, bipy 2,2′-bipyridine, biql 2,2′-biquinoline, phen 1,10-phenathroline. X-Ray analyses revealed that all compounds consist infinite 1D...

Six coordination compounds of bis(5-tetrazolyl)amine (H2bta) with different metal ions, M{M3(μ3-X)(bta)3(H2O)6}2] (X = OH for M MnII1, and CdII2; X F MnII3), [Mn(bta)(H2O)3]·0.5H2O (4), [Zn(bta)(NH3)2]·0.5H2O (5) [Zn(Hbta)2(H2O)2]·H2O (6) have been described. The were synthesized using one-pot hydrothermal methods involving the in situ generation ligand from dicyanamide azide (1–4, 6), or by pre-synthesized H2bta (4, 5). bta 1–3 assumes μ3 tetradentate mode both 1,2- 1,4-tetrazole bridges,...

The combination of α,α′-dihydroxybibenzyl-4,4′-dicarboxylate and 4,4′-bipyridine as bridging ligands to bind Zn(II) leads an unprecedented 2D → entanglement pattern having both polyrotaxane polycatenane features.

Two Co(II) metal–organic frameworks with 2,2′-dinitrobiphenyl-4,4′-dicarboxylate (dnpdc) and different dipyridyl ligands have been synthesized by hydrothermal methods. They exhibit three-dimensional mixed-connected net topologies either interpenetration or self-catenation features. With dnpdc 4,4′-bipyridine as cobridging ligands, compound 1 displays 3-fold interpenetrated (4,6)-connected nets based on mononuclear binuclear nodes. bis(4-pyridyl)ethane 2 exhibits a novel (6,8)-connected two...

Three new Zn(II) metal–organic coordination polymers, [Zn3(STDC)3(py)2] (1), [Zn3(STDC)3(4,4′-bpy)] (2), [Zn3(STDC)3(bpea)] · 3H2O (3), where H2STDC = trans-stilbene-4,4′-dicarboxylic acid, py pyridine, 4,4′-bipy 4,4′-bipyridine, bpea 1,2-bis(4-pyridyl)ethane, were prepared by solvothermal reactions of acetate with in the presence or linear bis(pyridyl) molecules. Compound 1 is a 2D triangle-tessellated layered network based on pinwheel trinuclear zinc-carboxylate clusters as secondary...

Two novel CuII coordination polymers, [Cu4O(L1)4(N3)2]n(ClO4)4n·3nH2O (1) and [Cu7(L2)2(N3)14]n (2), have been synthesized from two zwitterionic carboxylate ligands, 1-carboxylatomethyl-4,4′-bipyridinium (L1) 1-carboxylatomethyl-4,4′-dimethylenedipyridinium (L2). Compound 1 exhibits interpenetrated 3D diamond networks in which the unusual μ4-O-centred tetrahedral Cu4 clusters with peripheral 1,1-N3 COO bridges are cross-linked by 4,4′-dipyridinium-1-methylene spacers. In compound 2,...

In this study, hydrochars loaded with iron species (Fe@HTC and Fe@HTC−T) were prepared by chemical co-precipitation tubular furnace sintering treatment to develop efficient sustainable catalysts for antibiotic wastewater treatment, addressing key challenges in environmental management. The characterization results indicated that on the changed from Fe3O4 FeO then metallic Fe pyrolysis temperature increased 400 °C 800 °C. of revealed a phase transition species, confirming...