hydrolysis of a carbophosphazene ligand leads to one-dimensional lanthanide coordination polymers. Synthesis, structure and dynamic magnetic studies.

An hydrolysis of the P-Cl bonds of the carbophosphazene [{NC(NMe)}{NPCl}] (L) in the presence of hydrated lanthanide(III) nitrates in a dichloromethane and methanol (2 : 1) solvent mixture afforded a series of novel 1D coordination polymers: [{Ln(L)(NO)(CHOH)(HO)} (Cl)] {where Ln(III) = Gd (1), Tb (2), Dy (3), or Er (4) and L is the hydrolyzed carbophosphazene (L) ligand}. X-ray crystallographic analysis revealed that complexes 1-4 are isostructural and crystallized in the monoclinic crystal system having 2/ space group. The coordination polymers are formed because of the involvement of the geminal P(O)(OH) moieties of the carbophosphazene ligand.

Reply to the Comments on Planar Tetracoordinate Hydrogen: Pushing the Limit of Multicentre Bonding.

Recently, Huo et al. has commented on our communication (Angew. Chem.

Planar Tetracoordinate Hydrogen: Pushing the Limit of Multicentre Bonding.

Among the list of planar tetracoordinate atoms, the smallest element hydrogen is missing. No experimental and theoretical evidence have ever been put forwarded. Herein, we introduce the first planar tetracoordinate hydrogen atom (ptH) in the global minimum geometry of In H cluster.

A single-ion magnet building block strategy toward Dy single-molecule magnets with enhanced magnetic performance.

A molecular dysprosium(III) complex [Dy(DClQ)(HO)] (1) was used as a building unit for the construction of lanthanide SMMs, leading to the isolation of two dinuclear Dy(III) complexes, namely [Dy(DClQ)(MeOH)] (2) and [Dy(DClQ)(bpmo)]·6MeCN (3) ( = 5,7-dichloro-8-hydroxyquinoline, = 4,4'-dipyridine-oxide). Structural analyses revealed the same NO coordination environment of the Dy(III) centers with a distorted biaugmented trigonal prism ( symmetry) and triangular dodecahedron ( symmetry) for 2 and 3, respectively. Magnetic studies revealed the presence of ferromagnetic and weak antiferromagnetic exchange interactions between the Dy centers in 2 and 3, respectively.

Is a transition metal-silicon quadruple bond viable?

Quadruple bonding in heavier main group elements is not known albeit having four valence orbitals accessible for bonding. Here we report the unprecedented quadruple bonding between a silicon atom and a transition metal fragment in the 1A1 electronic ground state of C3v symmetric SiRu(CO)3 based on high level theoretical calculations. Various bonding analyses reveal the nature of the Si[quadruple bond, length as m-dash]Ru quadruple bonding interaction, which involves one usual Si-Ru σ bond, two usual Si-Ru π bonds and one additional Si → Ru dative σ bond.