Investigation of europium(III) and gadolinium(III) complexes with naphthoyltrifluoroacetone and bidentate heterocyclic amines. Abstract Lewis base adducts of the type Ln(NTA)3·phen and the binuclear complexes [Ln(NTA)3]2·bpym [NTA=1-(2-naphthoyl)-3,3,3-trifluoroacetone, phen=1,10-phenanthroline, bpym=2,2′-bipyrimidine; Ln=Eu, Gd] have been prepared by replacement of the coordinated water molecules in the complexes Ln(NTA)3·2H2O. The compounds were characterised by elemental analysis, 1H NMR, X-ray diffraction…

The role of C-H···O interactions in the solid and liquid-phase structures of methyltrioxo rhenium. Abstract The importance of C–H···O hydrogen bonds involving the less common Re=O acceptor group in the small organometallic methyltrioxorhenium (MTO) is studied by combined vibrational spectroscopy and ab initio calculations. The observed vibrational spectrum is well described by the calculated spectrum…

Ru(II) Complexes Incorporating Tetrathia-macrocycles: Synthesis And Conformational Analysis. Abstract The synthesis of a series of RuII complexes incorporating thiacrown ligands ([12]ane-S4, [14]ane-S4, [16]ane-S4), as well as 2,2′-bipyridine (bpy) or pyridine, is reported. Structural studies on these complexes have been carried out using a variety of techniques. Detailed 1H NMR spectroscopic studies on the previously reported…

C-H···O Hydrogen Bonds in Cyclohexenone Reveal the Spectroscopic Behaviour of C(sp3)-H and C(sp2)-H donors. Abstract C-H center dot center dot center dot O hydrogen bonds in liquid 2-cyclohenexen-1-one are studied to assess the vibrational spectroscopic behavior of the C-sp2-H and C-sp3-H donors. The presence of a pseudo-isosbestic point in the nu C&3bond; O region supports…

Synthesis and characterization of a manganese(II) acetonitrile complex supported on functionalized MCM-41. Abstract The acetonitrile complex [Mn(NCCH3)6] [B(C6F5)4]2 has been immobilized in the ordered mesoporous silica MCM-41 functionalized with a pyrazolylpyridine (PP) ligand. A metal loading of 0.72 wt.% (0.13 mmol g−1) was achieved. Powder X-ray diffraction and N2 adsorption–desorption analysis of the derivatized material…