Isoreticular 2D uranyl coordination polymers based on the mixed oxalate-succinate linkers

Сережкин, В. Н.; Grigoriev, Mikhail S.; Rogaleva, E. F.; Новиков, С. А.; Сережкина, Л. Б.

doi:10.1016/j.solidstatesciences.2020.106531

Cited by 2 publications

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“…In particular, complexes 1 and 8 contain the closely related counterions PPh 4 + and PPh 3 Me + , and the hcb network in 1 would appear to be adequately corrugated for 2-fold or even 3-fold interpenetration to occur; it may be surmised that it is prevented in this case by the stacking preferences of the counterions. At least, it appears that the strong tendency exhibited by the uranyl ion to form quasiplanar, undulated or corrugated diperiodic, graphitelike networks when complexed by divergent dicarboxylates is an auspicious trend in view of obtaining entangled species, particularly when the ligands are sufficiently elongated to form large rings. The formation of entangled species is a complicated phenomenon which displays some unexpected features probably associated with the lability of the metal–ligand coordinate bond, such as partial or reversible interpenetration, or single-crystal to single-crystal transformations involving a change in interpenetration degree, for example.…”

Section: Resultsmentioning

confidence: 99%

Contrasting Networks and Entanglements in Uranyl Ion Complexes with Adipic and trans,trans-Muconic Acids

Thuéry

Harrowfield

2022

Inorg. Chem.

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adpH2) and trans,trans-muconic (trans,trans-hexa-2,4-diene-1,6dicarboxylic, mucH2) acids have been reacted with uranyl cations under solvo-hydrothermal conditions, yielding nine homo-or heterometallic complexes displaying in their crystal structure the effects of the different flexibility of the ligands. The complexes [PPh4]2[(UO2)2(adp)3] (1) and [Ni(bipy)3][(UO2)2(muc)3]5H2O (2), where bipy is 2,2ʹ-bipyridine, crystallize as diperiodic networks with hcb topology, the layers being strongly puckered or quasiplanar, respectively. Whereas [(UO2)2(adp)3Ni(cyclam)]2H2O (3), where cyclam is 1,4,8,11tetraazacyclotetradecane, crystallizes as a diperiodic network, [(UO2)2(muc)3Ni(cyclam)]2H2O (4), is a triperiodic framework in which the Ni II cations are introduced as pillars within a uranyl-muc 2framework with mog topology.[UO2(adp)(HCOO)2Cu(R,S-Me6cyclam)]2H2O (5), where R,S-Me6cyclam is 7(R),14(S)-5,5,7,12,12,14hexamethylcyclam, is a diperiodic assembly with sql topology, and it crystallizes together with [H2NMe2]2[(UO2)2(adp)3] (6), a highly corrugated hcb network with a square-wave profile, which displays threefold parallel interpenetration. In contrast, [(UO2)3(muc)2(O)2Cu(R,S-Me6cyclam)] ( 7) is a diperiodic assembly containing hexanuclear, 3-oxido-bridged secondary building units which are the nodes of a network with hxl topology. The two related complexes [PPh3Me]2[(UO2)2(adp)3]4H2O (8) and [PPh3Me]2[(UO2)2(muc)3]H2O (9) crystallize as hcb networks, but their different shapes, undulated or quasi-planar, respectively, result in different entanglements, twofold parallel interpenetration in 8 and twofold inclined 2D  3D polycatenation in 9.

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Section: Resultsmentioning

confidence: 99%