Solvent Control in the Synthesis of 3,6-Bis(pyridin-3-yl)-1,2,4,5-tetrazine-Bridged Cadmium(II) and Zinc(II) Coordination Polymers

Withersby, Matthew A.; Blake, Alexander J.; Champness, Neil R.; Cooke, Paul; Hubberstey, Peter; Li, Wan‐Sheung; Schröder, Martin

doi:10.1021/ic980898h

Cited by 330 publications

(131 citation statements)

References 27 publications

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“…The solvent dependence of the product formation in the two reactions is quite commonly observed in the formation of MOFs, particularly when solvent coordination is observed in the products. Indeed a dependence on alcohol coordination has been observed before in zinc-based coordination polymers [22] and is a contributing factor leading to the coordination of four MeOH ligands in 1 and only a single EtOH ligand per Mn(II) cation in 2. The number of coordinated alcohol molecules in the two examples ultimately affects the dimensionality of the resulting coordination polymer but it is perhaps too simplistic to conclude that the dimensionality of the network is entirely dependent on the coordinating ability of MeOH vs. EtOH in this system.…”

Section: Resultssupporting

confidence: 53%

Porphyrin-Based Metal Organic Frameworks: Unusual examples of Mn(II) carboxylate frameworks containing free-base porphyrins.

Richards¹,

Lewis²,

Blake³

et al. 2013

Zeitschrift für Kristallographie - Crystalline Materials

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Abstract. The structures of two porphyrin-based metalorganic frameworks are reported. The reaction of a carboxylic acid functionalised porphyrin with Mn(NO 3 ) 2 gives rise to either a one-dimensional or a two-dimensional framework structure depending on the reaction solvent employed.562 (5) , P 1 1, R1 ¼ 0.0894, wR2 ¼ 0.2850) consists of one-dimensional coordination polymers linked through hydrogen-bonded porphyrin molecules leading to a twodimensional array. In contrast 2 (a ¼ 13.6852 (6) , P2 1 /c, R1 ¼ 0.1218, wR2 ¼ 0.3806) consists of two-dimensional sheets, constructed from dinuclear Mn(II) clusters and bridging porphyrin ligands, which, as in 1, are linked through hydrogen-bonded porphyrin molecules but in this case leading to a three-dimensional array. In both structures it is notable that the porphyrin molecules do not bind the Mn(II) cations through the macrocyclic carity, rather both structures.

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Section: Resultssupporting

confidence: 53%

Porphyrin-Based Metal Organic Frameworks: Unusual examples of Mn(II) carboxylate frameworks containing free-base porphyrins.

Richards¹,

Lewis²,

Blake³

et al. 2013

Zeitschrift für Kristallographie - Crystalline Materials

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“…In addition, the design and synthesis of novel coordination architectures controlled by varying the reaction conditions (including temperature, [18,19] metal/ligand ratio, [20] pH, [21] solvents, [22] and counter anions [23,24] ) are of great interest in coordination chemistry and reactions. Appropriate control of the reaction conditions makes it possible to construct new materials with useful properties.…”

Section: Introductionmentioning

confidence: 99%

Temperature‐Controlled Solvothermal Syntheses, Structures and Characterizations of a Novel Class of Zn Complexes Constructed from 1,4‐Bis[2‐(5‐phenyloxazolyl)]benzene

Chen

Zhang

et al. 2005

Eur J Inorg Chem

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Three novel complexes, ZnCl2(H2O)(POPOP)·POPOP) (1), [ZnCl2(POPOP)]n (2), and {Zn2(CH3COO)(POPOP)1.5Cl3}n (3) {POPOP = 1,4‐bis[2‐(5‐phenyloxazolyl)]benzene}, of zinc−POPOP coordination polymers have been obtained from an identical starting mixture using temperature as the only independent variable. Complexes 1−3 all crystallize in the triclinic P$\bar 1$ space group, but their ZnII centers adopt different coordinations. Complex 1 consists of POPOP‐coordinated zinc units and discrete POPOP molecules, 2 features an interesting zigzag chain structure, and 3 consists of unique ladder‐like double‐chains bridged by POPOP units. Furthermore, 1−3 display some different fluorescent emissions based on their different coordination architectures. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)

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“…The inclusion of water molecules within the structure of 4 is not surprising; indeed solvent inclusion is often encountered in coordination framework structures and can have a significant influence on the overall structure of the resultant product. [21] Influence of anion: Assuming efficient close packing it can be deduced that by more than doubling the anionic volume on going from NO 3 À , or ClO 4 À , to CF 3 SO 3 À [22] the possibility of adopting an identical doubly-interpenetrated a-polonium net in 1, 2 and 3 is precluded. Thus, for 2 the space occupied by the {[ScL 3 ] 3 + } ¥ framework and the associated CF 3 SO 3 À ions corresponds to 65.1 % (3649 3 ) [23] of the unit cell volume, representing greater than 50 % of the total volume, and thus precluding interpenetration.…”

Section: Resultsmentioning

confidence: 99%

Anion Control over Interpenetration and Framework Topology in Coordination Networks Based on Homoleptic Six‐Connected Scandium Nodes

Long

Hill

Blake

et al. 2005

Chemistry A European J

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161

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Reaction of ScX3 (X=NO3-, CF3SO3-, ClO4-) with 4,4'-bipyridine-N,N'-dioxide (L) affords topologically distinct six-connected three-dimensional coordination frameworks, {[Sc(L)3](NO3)3}(infinity) (1), {[Sc(L)3](CF3)SO3)3(CH3OH)2.7(H2O)3}(infinity) (2), {[Sc(L)3](ClO4)3}(infinity) (3) and {[Sc(L)4(H2O)2](ClO4)3}(infinity) (4). Compounds 1, 2 and 3 are networks based on octahedrally co-ordinated ScO6 centres bound through six oxygen atoms from six separate N-oxide ligands L. Compounds 1 and 3 are doubly interpenetrated and have alpha-polonium-type structures of 4(12)6(3) topology based upon three intersecting (4,4) nets. The structure of 2 is unusual and shows parallel, co-planar layers of (4,4) nets connected in a criss-crossed fashion to afford a new 4(8)6(6)8 topology. In 4 only four ligands L bind to each Sc(III) centre with two additional water molecules bridging metal nodes. Significantly, the bridges formed by L do not sit in a plane and if connections through L are considered alone the resultant structure is a diamondoid array typically based upon a tetrahedral connecting node at Sc. Five interpenetrating diamondoid networks are observed that are cross-bridged by water molecules to form a single three-dimensional array of 4(8)6(7) topology. Compound 4 can also be viewed as incorporating two intersecting (4,4) grids based upon two ligands L and two bridging waters. Thus, variation of anion, solvent and conditions critically affects the structures of products formed, and the series of polymers reported herein illustrates how tectons based upon (4,4) grids can be combined and distorted to form non-NaCl topologies and even cross-bridged, multiply interpenetrated diamondoid materials. Both compounds 2 and 4 represent unusual examples of self-penetrated coordination frameworks.

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Solvent Control in the Synthesis of 3,6-Bis(pyridin-3-yl)-1,2,4,5-tetrazine-Bridged Cadmium(II) and Zinc(II) Coordination Polymers

Cited by 330 publications

References 27 publications

Porphyrin-Based Metal Organic Frameworks: Unusual examples of Mn(II) carboxylate frameworks containing free-base porphyrins.

Porphyrin-Based Metal Organic Frameworks: Unusual examples of Mn(II) carboxylate frameworks containing free-base porphyrins.

Temperature‐Controlled Solvothermal Syntheses, Structures and Characterizations of a Novel Class of Zn Complexes Constructed from 1,4‐Bis[2‐(5‐phenyloxazolyl)]benzene

Anion Control over Interpenetration and Framework Topology in Coordination Networks Based on Homoleptic Six‐Connected Scandium Nodes

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