An Extremely Porous Hydrogen-Bonded Framework Composed of D-Penicillaminato Co^III_2Au^I_3 Complex Anions and Aqua Cobalt(II) Cations : Formation and Stepwise Structural Transformation

This is the accepted version of the following article: S. Surinwong, N. Yoshinari, B. Yotnoi & T. Konno, "An Extremely Porous Hydrogen-Bonded Framework Composed of D-Penicillaminato CoIII2AuI3 Complex Anions and Aqua Cobalt(II) Cations : Formation and Stepwise Structural Transformation," Chem. Asian J. , 11(4) pp. 486-490, John Wiley & Sons, 2016, which has　been published in final form at http://dx.doi.org/10.1002/asia.201501352. This article may be used for non-commercial purposes in accordance with the Wiley Self-Archiving Policy

Influence of secondary ligand on structures and topologies of lanthanide coordination polymers with 1,3,5-triazine-2,4,6-triamine hexaacetic acid

© 2015 Taylor and Francis. A series of new lanthanide coordination polymers has been synthesized and structurally characterized; [Ln 4 (TTHA) 2 (pzac)(H 3 O) 2 (H 2 O)]·5H 2 O (Ln = Pr (1a) and Nd (1b)), [Sm 8 (TTHA) 4 (pzac) 0.5 (H 3 O)(H 2 O) 7.5 ]·4H 2 O (2), [Ln 4 (HTTHA) 2 (SO 4 )(H 2 O) 4 ]·5H 2 O (Ln = Pr (3a) and Nd (3b)), where H 6 TTHA = 1,3,5-triazine-2,4,6-triamine hexaacetic acid, and H 2 pzac = 2,5-dioxo-piperazine-1,4-diacetic acid. The compounds feature 3-D frameworks comprising the deprotonated H 6 TTHA as the primary ligand and either the in situ generated pzac 2- or sulfate as the secondary ligands. The influence of the deprotonated H 6 TTHA in directing the framework structures through preferential coordination modes and molecular conformation is described. The effect of the secondary ligands in increasing the compactness of the frameworks and in the alternation of the framework topologies based on the four-connected pts type is described

(1-Butyl-1,4-diazabicyclo[2.2.2]octon-1-ium-κN4)trichloridocobalt(II)

The title compound, [Co(C 10 H 21 N 2 )Cl3], was obtained as the by-product of the attempted synthesis of a cobalt sulfate framework using 1,4-diaza-bicyclo-[2.2.2] octane as an organic template. The asymmetric unit comprises two distinct mol-ecules, and in each, the cobalt(II) ions are tetra-hedrally coordinated by three chloride anions and one 1-butyl-diaza-bicyclo-[2.2.2]octan-1-ium cation. The organic ligands are generated in situ, and exhibit two forms differentiated by the eclipsed and staggered conformations of the butyl groups. These mol-ecules inter-act by way of C - H⋯Cl hydrogen bonds, forming a three-dimensional hydrogen-bonding array

Tris(ethyl­enediamine)cobalt(II) sulfate

The structure of the title compound, [CoII(C2H8N2)3]SO4, the cobalt example of [M(C2H8N2)3]SO4, is reported. The Co and S atoms are located at the 2d and 2c Wyckoff sites (point symmetry 32), respectively. The Co atom is coordinated by six N atoms of three chelating ethyl­enediamine mol­ecules generated from half of the ethyl­enediamine mol­ecule in the asymmetric unit. The O atoms of the sulfate anion are disordered mostly over two crystallographic sites. The third disorder site of O (site symmetry 3) has a site occupancy approaching zero. The H atoms of the ethyl­enediamine mol­ecules inter­act with the sulfate anions via inter­molecular N—H⋯O hydrogen-bonding inter­actions

Inter­calated brucite-type layered cobalt(II) hydroxy­sulfate

In an attempt to synthesize new cobalt(II) sulfate framework structures using 1,4-diaza­bicyclo­[2.2.2]octane as a template, crystals of poly[0.35-[hexa­aqua­cobalt(II)] [tri-μ-hydroxido-μ-sulfato-dicobalt(II)]], {[Co(H2O)6]0.35[Co2(OH)3(SO4)]}n, were obtained as a mixture with [Co(H2O)6]SO4 crystals. The crystal structure can be described as being constructed from discrete brucite-type [Co4(OH)6(SO4)2] layers, each of which is built up from edge-shared [Co(OH)6] and [Co(OH)4(OSO3)2] octa­hedra, with partial inter­calation by [Co(H2O)6]2+ ions. The absence of ca 30% of the [Co(H2O)6]2+ cations indicates partial oxidation of cobalt(II) to cobalt(III) within the layer

catena-Poly[[bis(pyridine-κN)zinc]-μ-5-carboxybenzene-1,3-dicarboxylato-κ2O1:O3]

The title one-dimensional coordination polymer, [Zn(C9H4O6)(C5H5N)2]n or [Zn(HBTC)(py)2]n, (I), where BTC is benzene-1,3,5-tricarboxylate and py is pyridine, is a solvent-free polymorph of [Zn(HBTC)(py)2]·2C2H5OH [Yaghi et al. (1997). Chem. Mater. 9, 1074–1076]. Differences in the spatial arrangements and supramolecular packing of the [Zn(HBTC)(py)2]n chains in the two structures are described. The chain in (I) extends parallel to [100] and is severely puckered, with a Zn...Zn distance of 8.3599 (3) Å and a Zn...Zn...Zn angle of 107.516 (3)°, as a result of hydrogen-bonding interactions of the types O—H...O and C—H...O. There is no evidence for π–π interactions in (I). The differences between the solvent-free and solvent-containing structures can be accounted for by the absence of the ethanol solvent molecule and the use of the converging pair of O atoms in the bis-monodentate bridging HBTC2− ligand in (I)

Microwave synthesis and crystal structures of two cobalt-4,4′- bipyridine-sulfate frameworks constructed from 1-D coordination polymers linked by hydrogen bonding

Two extended solids displaying both one-dimensional coordination polymer and two-dimensional hydrogen-bonded structural features has been prepared under microwave-assisted hydrothermal conditions. [Co(H2O)(4)(4,4'-bipyridine)](4,4'-bipyridineH(2))center dot 2(SO4)center dot 2H(2)O (1) contains one-dimensional coordination polymer chains of composition [Co(4,4'-bipyridine)(H2O)(4)(2+)](n) that are linked into a three dimensional framework by hydrogen bonding through uncoordinated sulfate and water. Within this framework is located a twice protonated 4,4'-bipyridine molecule (C10N2H102+) which forms two short N-H center dot center dot center dot O hydrogen bonds and eight further non-classical C-H center dot center dot center dot O interactions. The close approach of guest and framework and the large number of interactions between them suggest the cation is important in templating this phase. [Co-2(4,4'-bipyridine)(2)(SO4)(2)(H2O)(6)center dot 4(H2O) (2) displays one dimensional chains of cobalt-bipyridine which are sinusoidal in nature. Two sets of these chains run parallel to the crystallographic [2 1 2] and [(2) over bar 1 (2) over bar ]directions. Two-dimensional hydrogen-bonded sheets parallel to the xz plane link these; further hydrogen bonds to uncoordinated water help to form a three-dimensional honeycomb network with the centroids of the six-membered rings aligned parallel to the a-axis. The use of microwave synthesis for framework solids of this type is described and the structures of the frameworks and the interactions responsible for their assembly are discussed. The thermal and spectroscopic behaviour of the two phases are described. (C) 2010 Elsevier Ltd. All rights reserved

Preparation and Characterization of Bis(μ-1,2-diaminoethane)cobalt(II) Hexavanadate: A Layered Polyoxovanadate Pillared by a Cobalt Coordination Complex

The first example of polyoxovanadate layered framework with a cobalt coordination complex as a pillaring unit, CoII(mu-C2N2H8)(2)[(V4V2O14)-V-IV-O-V], was readily synthesized under hydrothermal conditions. The structure can be solved and refined in monoclinic P2(1)/n with a = 9.143(3) angstrom, b = 6.5034(11) angstrom, c = 15.874(4) angstrom, beta = 101.90(2), V = 923.6(4) angstrom(3) and Z = 2. The crystal structure comprises two-dimensional (V4V2O14)-V-IV-O-V}(2-) layers extending parallel to [101], constructed from tetrahedral {(VO4)-O-V} and square pyramidal {(VO5)-O-IV} building units. Adjacent layers are linked through the octahedral {(CoO2)-O-II(mu-C2N2H8)(2)} pillars, within which the CoII resides on an inversion center. The structure displays N-H center dot center dot center dot O and C-H center dot center dot center dot O hydrogen bonding between the ethylenediamine and vanadium oxide layers

Microwave assisted crystal growth of a new organic-decavanadate assembly: [V10O27(OH)] · 2(C6N2H14) · (C6N2H13) · (C6N2H12) · 2H2O

Microwave synthesis was used to grow single crystals of a new organic-inorganic supramolecular assembly, [V10O27(OH)]·2(C6N2H14)·(C6N2H13)·(C6N2H12)·2H2O, in a very short time compared to the conventional solution technique. In order to generate crystals suitable for single crystal experiments, an equimolar mixture of reactants and a few hours of microwave heating are required. Although non-merohedral twinning is an inherent problem, the crystal structure can be solved and refined in the orthorhombic space group Pna2 (1) with a = 20.972(4) , b = 10.3380(14) , c = 20.432(3) , Z = 4, with an excellent result, R(F2) = 0.0431. The assembly is hydrogen bond-assisted and built up of the monoprotonated decavanadate and 1,4-diazabicyclo[2.2.2]octane of various degrees of protonation. The number and location of protons on both the inorganic and organic motifs govern the formation of the extensive hydrogen bonding network, which in turn regulates the assembly architecture