Ein neuartiger großporiger, metallorganischer Zeotyp

[Co5(im)10⋅2 MB]∞: A Metal-Organic Open-Framework with Zeolite-Like Topology

“…Thermal ellipsoids are at 50 % probability level. Selected bond lengths [ä] and angles [8] and Co ¥¥¥ Co distances [ä]:…”

“…Therefore we consider that the cobalt imidazolate 1 is likely a real metalorganic zeotype. [8] Experimental Section 1: Co(Ac) 2 ¥ 4 H 2 O (2.5 mmol), imidazole (5 mmol), and piperazine (2.5 mmol) were stirred in 3-methyl-1-butanol (30 mL) at room temperature for 12 h to give a precipitate. This heterogeneous mixture was then placed in a Teflon-lined steel autoclave and heated at 140 8C for 24 h. The resulting impure dark purple single crystals of 1 are stable in air and insoluble in water and common organic solvents except organic acids such as formic and acetic acid.…”

“…[7] Armed with this information, we were able to tune the reactivity at the iodine nucleus by using a variety of Noxide ligands, and hence developed a mild room-temperature variant of the original IBX dehydrogenation with expanded functional group tolerance. [12] With such dramatic changes in reactivity patterns on changing the ligand from THF [7,8] or DMSO [10,11] to an N-oxide, [12,13] we began to question the role of all the substituents on the iodine nucleus, including the aromatic core. Herein we report initial results that probe the latter question and provide us with a number of economic, commercially available, and safe iodine(v) dehydrogenation agents whose structures contain no aromatic moiety.…”

A Silver(I) Coordination Polymer Chain Containing Nanosized Tubes with Anionic and Solvent Molecule Guests

“…[12] Recently, Goodgame et al reported a new type of metal-organic large-pore zeotype, namely, [Zn(dimto) 2 ] n´m DMF (Hdimto 4,6-di(1-imidazolyl)-1,3,5-triazin-2-one), which was generated from zinc bromide and 2,4,6-tri(1-imidazolyl)-1,3,5-triazine (timt). [13] We have designed two multidentate ligands, 1,2-bis-[(2-pyrimidinyl)methylsulfanyl]-benzene (bpsb) and 2,4,6-tris[(4-pyridyl)methylsulfanyl]-1,3,5-triazine (tpst), and obtained the twodimensional lamellar network polymer [Ag 2 (bpsb) 3 (ClO 4 ) 2 ] n and the metallosupramolecular cube [Ni 6 (tpst) 8 Cl 12 ]. [14] Examining the geometric requirements of symmetry and sterochemistry, we expected to prepare coordination polymers with nanosized tubes of different lengths.…”

“…The only example known to us of a larger coordinative cage that provides open framework is that in the infinite three-dimensional coordination polymer of composition [Zn(dimto) 2 ] n´m DMF mentioned above. [13] Five NO 3 À ions in 1 are each located near the silver(i) centers and embedded in the polymer chain regions. The Ag´´´O distances are in the range of 2.65 ± 3.10 .…”