August 2000 issue
The structure of Na2Ce(NO3)5·H2O consists of isolated chains of 12-coordinate Ce atoms. Na atoms and water molecules are located between the chains.
addenda and errata
electronic papers (inorganic compounds)
The least protonated hexamolybdoplatinate(IV) polyanion, [H2α-PtMo6O24]6−, was isolated by using Nd3+ as a counter-cation. Two O atoms of the central PtO6 octahedron are protonated.
electronic papers (metal-organic compounds)
The title compound adopts a monomeric three-legged piano-stool structure with one benzyl ligand disordered between two sites related by a ∼30° rotation about an axis defined by the Hf atom and the ipso-C atom of the benzyl ligand. There are no short Hf⋯Cipso contacts (no distances less than 3.1 Å), indicating no significant Hf–Ph interactions.
The novel title ruthenium(II) complex was synthesized from the reaction of 1,2,4-triazepine, a new class of bidentate ligands, with [Ru(p-cymene)Cl2]2. The 1,2,4-triazepine ligand is coordinated to the metal centre through the N-4 and S atoms, forming a four-membered chelate ring. This is the first structural example of a transition metal complex containing a 1,2,4-triazepine ligand.
In methyltriphenylstibonium tetrafluoroborate, prepared from triphenylantimony and trimethyloxonium tetrafluoroborate, there are four independent cations and anions in the asymmetric unit. The geometry around the Sb atom is distorted tetrahedral.