In the presence of Et4N+ cation chloranilate dianion (can2–) associates with a range divalent cations, M2+, to yield an isomorphous series crystalline compounds composition (Et4N)2[M2(can)3] (M = Mg, Mn, Fe, Co, Ni, Cu, and Zn). The fluoranilate (fan2–) likewise affords closely related (Et4N)2[Zn2(fan)3]. structures (Et4N)2[Zn2(can)3], (Et4N)2[Fe2(can)3], (Et4N)2[Zn2(fan)3] were determined by single crystal X-ray diffraction. Powder diffraction indicates that all members can2– are...

The need for effective CO2 capture systems remains high, and due to their tunability, metallosupramolecular architectures are an attractive option gas sorption. While the use of extended metal organic frameworks adsorption has been extensively explored, exploitation discrete metallocage bind gases in its infancy. Herein solid state properties a series [Pd2 (L)4 ]4+ lantern shaped coordination cages (L = variants 2,6-bis(pyridin-3-ylethynyl)pyridine), which had solvent accessible internal...

Reaction of the chloranilate dianion with Y(NO3 )3 in presence Et4 N+ appropriate proportions results formation (Et4 N)[Y(can)2 ], which consists anionic square-grid coordination polymer sheets interleaved layers counter-cations. These counter-cations, serve as squat pillars between [Y(can)2 ] sheets, lead to alignment square grid and subsequent generation channels running perpendicular sheets. The crystals are found be porous retain crystallinity following cycles adsorption desorption. This...

The synthesis, structural and gas sorption studies of a porous Cu(II) coordination polymer featuring 1H-indazole-5-carboxylic acid (H2L) are presented. [Cu(HL)2] is thermally hydrolytically robust 4-connected 3D NbO topology replete with 1D channels that permit selective hysteretic CO2.

A series of solid-state structural transformations are found to accompany desolvation relatively simple coordination polymers yield materials that exhibit unexpected gas sorbing properties. Reaction 1,2,4,5-tetrahydroxybenzene with M(II) salts (M = Mg, or Zn) in an alcohol/water solution the presence air affords cis-M(II)(C6H2O4(-II))(H2O)2·2H2O·xROH, Zn), crankshaft-like chains which absolute configurations chiral metal centres follow pattern Δ Λ Λ, and hydrogen bonded together generate...

The first C-bound orthocarborane (oCb) supported hypervalent iodine(III) -IL2 type species are reported in derivatives of RoCbIL2, for L = F, OTf including a structurally verified -IF2 example. Initial synthetic observations and supporting theoretical calculations suggest that oCbIL2 compounds will be more reactive than the widely used ArIL2 class compounds.

The direct derivatisation of heteroleptic iridium(III) complexes with sulfonate groups removes the limitations prior strategies for preparation water-soluble analogues, in which were prepared from a narrow range ligands suitably polar or charged functional groups. Phenylpyridine, phenylpyrazole and phenylbenzothiazole selectively sulfonated opposite to their cyclometalated carbon within containing bipyridine N-heterocyclic carbene ancillary ligands. Altering reaction conditions enabled...

Reaction of the pseudotetrahedral tetracarboxylic acid proligand tetrakis(4-carboxyphenyl)silane (H4L) with salts various lanthanoid metals has afforded three new coordination polymers: {[H3O]2[Ce2(L)2(H2O)2]·2DMF·2H2O}∞ (1), {[Eu3L2(NO3)(DMF)4(H2O)]·0.5DMF·6H2O}∞ (2), and {Eu(HL)(DMF)2(H2O)]·DMF·2.5H2O}∞ (3) (DMF = N,N′-dimethylformamide), which have been structurally characterized by single-crystal X-ray diffraction. Compounds 1 2 are both noninterpenetrated three-dimensional networks that...

A chiral, octahedral M12 L12 cage, which is charge neutral and contains an internal void of about 2000 Å3 , reported. The cage was synthesised as enantiopure complex by virtue amino-acid-based dicarboxylate ligands, assemble around copper paddlewheels at the vertices octahedron. persists in solution with retention fluorescence properties parent acid. solid-state structure large pores both within between cages, displays permanent porosity for sorption gases crystallinity. Initial tests show...

The structure of Li(inox)⋅2/3 DMF (inox(-) =the N-oxide the isonicotinate anion) consists a 3D framework with solvent-filled, square cross-section channels approximate dimensions 5.5×5.5 Å. Unfortunately, Li(inox) is unstable upon removal from channels. When structurally related 4-hydroxybenzoic acid (H2 hba) was used in place Hinox, and Zn(2+) Li(+) , similar but more robust network, Zn(hba), obtained; isostructural compound, Co(hba), may also be prepared. Longer ligands phenolate...

Abstract A Zn II complex of the dianionic tetradentate ligand formed by deprotonation glyoxal‐bis(4‐phenyl‐3‐thiosemicarbazone) (H 2 gtsp) is a [3+3] trinuclear triangular prism. Recrystallization this in presence either CO , CS or CH 3 CN leads to formation [4+4] open‐ended charge‐neutral tetranuclear coordination nanotubes, approximately nm length and with internal dimensions large enough accommodate linear guest molecules, which serve template their formation. Upon removal templating...

Reaction between LiOH and isonicotinic acid (inicH) in the appropriate solvent or mixture of solvents affords a family variously solvated forms simple ionic lithium salt, viz., Li+inic–·S (where S = 0.5 morpholine, dioxane, 0.25 n-hexanol, N-methylpyrrolidinone, N,N-dimethylformamide, n-propanol, cyclohexanol, pyridine, t-butanol, ethanol, methanol). Three-dimensional Li+inic– frameworks containing solvent-filled channels are present all these except for MeOH EtOH solvates. The...

Abstract The uptake of inhalation anesthetics by three topologically identical frameworks is described. 3D network materials, which possess square channels different dimensions, are formed from the relatively simple combination Zn II centres and dianionic ligands that contain a phenolate carboxylate group at opposite ends. All framework materials able to adsorb N 2 O, Xe isoflurane. Whereas with widest large quantities various guests gas phase, narrower have superior binding enthalpies...

The monoanion of 1,3-bis(carboxymethyl)imidazolium (H2imdc+) combines with Cu(II) to produce an undulating 2D coordination polymer composition [Cu2(imdc)2(CH3OH)2](BF4)2·(CH3OH)(H2O) (1) in which copper acetate-like dimers, linked by imdc− ligands, act as 4-connecting centres. Cationic sheets stack on top each other A, B, B… fashion and a structure that contains channels running parallel the plane network. Tetrafluoroborate anions are located between sheets. Upon removal coordinated...

Both mixed λ3-iodoarenes and possessing -OTf ligands are coveted for their enhanced reactivities. Here we describe the synthesis, reactivity, comprehensive characterisation of two new ArI(OTf)(X) species, a class compound that were previously only invoked as reactive intermediates where X = Cl, F divergent reactivity with aryl substrates. A catalytic system electrophilic chlorination deactivated arenes using Cl2 chlorine source ArI/HOTf catalyst is also described.

The recently discovered I(III) reagent NO2-C6H4-I(OTf)2 is found to rapidly react with hydride sources, including HSiEt3 and relatively hydridic C-H precursors. These represent the first distinct reactions involving direct abstraction by under ambient conditions. Direct C-F also demonstrated, as well oxidation of cyclic alkenes aromatic rings, all representing new for demonstrating very high reactivity NO2-C6H4-I(OTf)2.

A new divergent homopiperazine-derived ligand N,N′-bis(4-carboxyphenyl)-1,4-diazacycloheptane H2L has been prepared, containing a semirigid saturated heterocyclic core which is capable of providing multiple distinct bridging geometries. Reaction with zinc acetate in DMSO gives two-dimensional parallel interpenetrated polyrotaxane structure 1 the loops and rods are formed by bent cis-(eq,ax) twist boat trans-(ax,ax) chair conformers, respectively. By matching distances between solvated metal...

A series of nine luminescent iridium( iii ) complexes with pH-responsive imidazole and benzimidazole ligands have been prepared characterized.

A new piperazine-derived ligand has been prepared and used to synthesise a porous coordination polymer which displays selective carbon dioxide uptake after solvent exchange thermal activation. The N,N′-bis(4-carboxyphenylmethylene)piperazine H2L1 was from piperazine in three steps good yield. structure containing the deprotonated form K2L1·2H2O determined consists of three-dimensional inorganic K2(COO)2(OH2) layers separated by long organic bridging linker. free compound one-dimensional...

Crystals of [Li(inox)(H2O)] (where inox– = the isonicotinate-N-oxide ion) are obtained from aqueous solution. The Li+ cations and carboxylate anions form a two-dimensional (2D) sheet containing four-membered (−Li–O–Li–O−) rings 16-membered (−Li–O–C–O−)4 rings; sheets linked to adjacent parallel through hydrogen bonds. solvent-free [Li(inox)], t-butanol, consist three-dimensional network which can also be prepared in microcrystalline by dehydration at 200 °C. [Ca(inox)2(H2O)2] contain 2D with...

An investigation of the adsorption properties two structurally related, 3D coordination polymers composition Zn(2-Mehba) and Zn(2,6-Me2hba) (2-Mehba = dianion 2-methyl-4-hydroxybenzoic acid 2,6-Me2hba 2,6-dimethyl-4-hydroxybenzoic acid) is presented. A common feature these structures are parallel channels that able to accommodate appropriately sized guest molecules. The differ with respect steric congestion within arising from methyl groups appended bridging ligands network. host network,...

A remarkably flexible, multifunctional, 2D coordination polymer exhibiting an unprecedented mode of reversible mechanical motion, enabling pores to open and close, is reported. Such multifunctional materials are highly sought after, owing the potential exploit coexisting electronic functionalities that underpin useful technological applications such as actuators ultrasensitive detectors. The polymer, composition Mn(F4TCNQ)(py)2 (F4TCNQ = 2,3,5,6-tetrafluoro-7,7,8,8-tetracycanoquinodimethane;...

The combination of lightweight metal cations with a range dicarboxylate ligands has led to the generation ionic network materials that possess channels occupied by solvent molecules. compounds [Li2 (2,2-bpdc)(DMF)2 ] and [Mg(2,2-bpdc)(DMF)2 (2,2-bpdc=2,2-dipyridyl-4,4-dicarboxylate) adopt similar structure in which parallel metal-carboxylate chains are linked four equivalent generate 3 D DMF molecules occupy channels. [Li4 (3,5-pdc)2 (DMF)]⋅solvate (3,5-pdc=3,5-pyridine dicarboxylate) adopts...