Coordination networks

Silver(I) complexes with polyamines also form molecular aggregates, thus hexamethylenetetramine yields 2D and 3D coordination networks,613 polymeric chains are obtained with diethylene-triamine, tris(2-aminoethyl)amine, or A,A -bis(aminoethyl)propane-l,3-diamine,426 and 2D networks are formed with thiocyanate and bridging polyamines.61... 

The chemistry of zinc ammine complexes is well known. There are X-ray structural examples of both the tetrahedral tetra-ammine and octahedral hexa-ammine.90,91 Four- and five-coordinate mixed ligand complexes are common and participation in coordination networks as terminal ligands is observed.92,93... 

Coordination networks can be crystallized from the zinc ion and 4,4 -bipyridyl.283,284 Some of these networks, including that of Hoskins et al. show interpenetration of an independent grid such as square sheets.2 These do not form spontaneously with bridging hydroxides as is observed with flexible bipyridyls. 

The basic zinc carboxylate structure with a Zn40 core is now well characterized structurally with a number of examples.371 It can also form part of higher nuclearity structures and coordination networks.372,373... 

Zinc phosphates and phosphonates can form highly interesting coordination networks, some in the presence of additional ligands. A number of compounds that have useful properties for the formation of zinc phosphate materials will also be discussed. 

The G phase is a complex phase possessing a bicontinuous structure which is located in or close to the compositional range of the PL phase. The minority component forms two interpenetrating threefold coordinated networks [10]. 

Transition metal Modern raw material Colouring ion Colour in tetrahedral coordination (network former) Colour in octahedral coordination (network modifier)... 

Paulusse JMJ, van Beek DJM, Sijbesma RP. Reversible switching of the sol-gel transition with ultrasound in rhodium(I) and iridium(I) coordination networks. J Am Chem Soc 2007 129 2392-2397. 

The only other example of a tetraorganomagnesiate that contains isolated anions in its solid-state structure is [Na2(DABCO)3(toluene)][Bii4Mg] (8). Each DABCO and toluene molecule bridges two sodium atoms, forming a polycationic three-dimensional coordination network, in which isolated Bn4Mg anions are embedded (Fignre 9). ... 

At the same time, by providing coordination, networking, expertise, and a lean decision-making structure, DNDI seeks to reduce the costs that states would incur by... 

DRCNet Online Library of Drug Policy, sponsored by the Drug Reform Coordination Network at http //www.druglibrary.org, bills itself as the world s largest online library of drug policy, and the claim is... 

Coordination networks, spacer-based, in crystal engineering, 12, 570... 

Metal-organic reactions, with sonochemistry, 1, 313 Metal-organometallic coordination networks, and manganese complexes, 5, 803 Metal oxide intercalation... 

Molybdenum trioxide, intercalation into, 12, 823 Molybdocenes, as anticancer agents, 1, 892 MOMNs, see Metal-organometallic coordination networks Monisocyanides, with silver(I) complexes, 2, 223 Monitoring methods, kinetic studies, 1, 513 Mono(acetylacetonate) complexes, with Ru and Os halfsandwich rf-arenes, 6, 523 tj2-Monoalkene monodentate ligands, with platinum divalent derivatives, 8, 617 tetravalent derivatives, 8, 625 theoretical studies, 8, 625 zerovalent derivatives, 8, 612... 

Braga, D., Giaffreda, S. L., Grepioni, F., etal., Mechanochemical preparation of molecular and supramolecular organo-metallic materials and coordination networks. Dalton Trans. 2006, 1249-1263. 

D networks based on the lanthanides with their high coordination numbers (typically 7-11) are less predictable than those based on transition metals and the high oxophilicity of the lanthanide (III) ions means that they do not bind strongly to ligands such as pyridine derivatives. As a result lanthanide coordination networks are less common in the literature however, they represent tremendous potential in terms of ever more complex topologies. 

Surin, M., Samori, P., Jouaiti, A., Kyritsakas, N., Hosseini, M. W., Molecular tectonics on surfaces Bottom-up fabrication of ID coordination networks that form ID and 2D arrays on graphite. Angew. Chem., Lnt Ed. 2007, 46, 245-249. 

The structure of material 6 is a 2D coordination network of twofold interpenetration, in which cubane-like Cu4I4 clusters act as connecting nodes and the dps ligands as the spacer. The intramolecular Cu—Cu distances range from 2.563(1) to 2.734(2) A. Like in the case of [ Cu(p,-I)2Cu (dps)2]ra 5, ligation... 

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