Dalton Transactions

doi: 10.1039/C7DT90118Fpmid: N/A

doi: 10.1039/c7dt90118fpmid: N/A

doi: 10.1039/C7DT90119Dpmid: N/A

doi: 10.1039/c7dt90119dpmid: N/A

doi: 10.1039/C7DT90120Hpmid: N/A

doi: 10.1039/c7dt90120hpmid: N/A

Simon, M.; Breher, F.

doi: 10.1039/c7dt02085fpmid: 28631790

Silyl ligands are of great interest in transition metal coordination chemistry since they exhibit a strong trans-influence and create electron rich metals centres, which are in turn eligible to activate reagents. This review presents and discusses the use of multidentate Si-based ligand systems in transition metal coordination chemistry. These include tri- and tetradentate pincer and scorpionate-type ligands, which have been developed in recent years in order to tailor both steric and electronic properties for achieving a defined control over the reactivity of a transition metal complex. A discussion of synthetic and structural aspects of several subgroups of ligand architectures is presented. Some compounds allow for a detailed insight into the activation process of silanes or are capable of activating small molecules.

Kumar, Ram; Rao, C. N. R.

doi: 10.1039/c7dt00583kpmid: 28590493

A strategy for the stabilization of metal–organic polyhedra (MOP) cages on graphene (Gr) and single-walled carbon nanotubes (NT) is reported. The surface area of the composites, MOPGr and MOPNT increases by an order of magnitude with a significant increase in pore volume in comparison to bulk MOP. The composites show an enhancement in the catalytic activity of up to ∼80% relative to bulk MOP in the conversion of propylene oxide into propylene carbonate. Depositing individual MOP cages on graphene or SWNT surfaces is beneficial in terms of gas adsorption and catalytic properties and provides a good example for useful effects of bonding materials of different dimensionalities.

Han, Wang-Kang; Qin, Long-Fang; Pang, Chun-Yan; Cheng, Cai-Kun; Zhu, Wei; Li, Zhi-Hua; Li, Zaijun; Ren, Xuehong; Gu, Zhi-Guo

doi: 10.1039/c7dt01634dpmid: 28590481

Two solvent-free polymorphs of a chiral iron(ii) complex have been obtained, and their polymorphism dependent spin-crossover and ferroelectric properties have been demonstrated. Polymorph I shows a gradual spin-crossover behavior, whereas polymorph II remains in a high-spin state but shows a typical ferroelectric feature.

Mendoza, Zenaida; Lorenzo-Luis, Pablo; Scalambra, Franco; Padrón, José M.; Romerosa, Antonio

doi: 10.1039/c7dt01741cpmid: 28617514

Synthesis, characterization and the antiproliferative activity of a new bimetallic complex [RuCp(PPh3)2-μ-dmoPTA-1κP:2k2N,N′-CoCl2]OTf·0.25H2O are described. The stability of the complex was studied under air and N2 atmospheres and in CDCl3, DMSO, water and the cell culture medium, at room temperature and 40 °C. The complex showed an enhanced antiproliferative activity (up to six-fold) when compared with its parent complex [RuCp(PPh3)2(HdmoPTA)]2+ against human lung, cervix, breast, and colon solid tumor cell lines.