The synthesis, structure and magnetic properties of a 3D network based on {Co₄(cit)₄}⁸⁻ (H₄cit = citric acid) cubane units linked by octahedral Co(II) centres is reported.

A truncated octahedral nanocage containing amide and quinoline groups has been synthesized as an artificial chemosensor for selectively fluorescent detection of uridine over other RNA-based nucleosides.

A review with 6 refs. on the synthesis of layered cuprates with single and double octahedral Sn-O and Ti-O layers. Abstract from SciFinder

K6Yb3(PS4)5 possesses two identical but interlocked three-dimensional frameworks. Each framework is realized by having Yb3+ atoms adopt both octahedral and trigonal prismatic sulfur coordination.

calcium dichloride tetra urea was prepared by the reaction of calcium chloride with urea in aqueous solution. the crystals are monoclinic, a= 7.633, b= 12.45 1, c= 8.118 ?,? = 113.17, z = 4, space group p 2,/a. the crystal structure was determined by single crystal x-ray methods and refined to r= 0.041. the calcium atoms are coordinated to four oxygen atoms of urea and to two chloride ions. the...

Single crystals of four erbium-chromium sulfides have been grown by chemical vapor transport using iodine as the transporting agent. Single-crystal X-ray diffraction reveals that in Er(3)CrS(6) octahedral sites are occupied exclusively by Cr(3+) cations, leading to one-dimensional CrS(4)(5-) chains of edge-sharing octahedra, while in Er(2)CrS(4), Er(3+), and Cr(2+) cations occupy the available ...

THE basic outlines of most of the hydrous layer silicate structures were determined during the 1930's. Present escalating interest in obtaining additional detail is indicated by (a) publication of over twenty structural refinements (2-D or 3-D) during 1954-64, (b) publication of a t least nine structures in 1965 or early 1966, and (c) personal communicat ion tha t a t least fifteen additional r...

Photocatalysts based on metal-organic frameworks (MOFs) are very promising due to a combination of high tuneability and convenient porous structure. Introducing porphyrin units within MOFs is a potential route to engineer these natural photosynthesis molecular catalysts into artificial photosynthesis heterogeneous catalysts. Using computer simulations based on density functional theory, we expl...

The stability of metallic clusters of sodium (N a) in the octahedral cages of N a-doped fullerites N a 6 C 60 and N a 11 C 60 is discussed within a Thomas-Fermi model. It is shown that the tetrahedral N a 4-cluster in N a 6 C 60 has an electric charge ∼ +2.7 (in electron charge units), while the body-centered cubic N a 9-cluster in N a 11 C 60 is almost electrically neutral. The nature of the m...