Institute of Chemistry

The paper presents a combined experimental and computational study of a new Pd(II) complex containing thiocyanate and pyridine hemiacetal ligands. The complex was studied by IR, 1H NMR, UV–Vis spectroscopy and X-ray crystallography. Electronic structure of the complex has been calculated with the density functional theory (DFT) method. The spin-allowed electronic transitions of the complex have been calculated with the time-dependent DFT method and the UV–Vis spectrum has been discussed on this basis. The luminescence properties of the complex have been examined.The combined experimental and computational study of new Pd(II) complex containing thiocyanate and pyridine hemiacetal ligands are presented. The complex was studied by IR, 1H NMR, UV–Vis spectroscopy and X-ray crystallography. The electronic structure of the complex has been calculated with the density functional theory (DFT) method. The spin-allowed electronic transitions of the complex have been calculated with the time-dependent DFT method and the UV–Vis spectrum has been discussed on this basis. The luminescence properties of the complex have been examined.

Seven novel heterobimetallic Cu/Hg polymers based on thiocyanate bridges have been synthesised and characterised by means of IR, EPR, magnetic measurements and single crystal X-Ray. Three of them, [Cu(pzH)4Hg(SCN)4]n (1) [Cu(indH)4Hg(SCN)4]n (2) and [Cu(ampy)2Hg(SCN)4]n (3), have one-dimensional coordination structure. Two compounds [Cu(pzH)2Hg(SCN)4]n (4) and [Cu(abzimH)Hg(SCN)4]n (5) form two-dimensional nets, whereas the complexes [Cu(pyCN)2Hg(SCN)4]n (6) and [Cu(pyCH(OH)(OMe))2Hg(SCN)4]n (7) are three-dimensional coordination polymers. The chains of 1 are connected by the intermolecular N–H•••N hydrogen bonds to the three dimensional net. In 2 the N–H•••S hydrogen bonds link the polymeric chains to the two dimensional layer extending along crystallographic (0 0 1) plane. The polymeric chains of compound 3 are joined by the intermolecular N–H•••N and N–H•••S hydrogen bonds to the three dimensional net. The polymeric layers of 4 are connected by the intermolecular N–H•••N hydrogen bonds to the three dimensional net.Novel bimetallic thiocyanate-bridged Cu(II)–Hg(II) compound-synthesis,X-Ray studies and magnetic properties► Novel heterobimetallic Cu/Hg coordination polymers were synthesised. ► The multidimensional structures have been proved by single X-ray analysIs. ► A variation in the crystalline architectures was observed depending on auxiliary ligands. ► Magnetic measurements indicate weak exchange interaction between Cu(II) in the crystal lattices below 10 K.

W artykule przedstawiono wizję chemii jako dziedziny zasłużonej na rzecz ekorozwoju. Omówiono niektóre powody pejoratywnego postrzegania chemii przez społeczeństwo. Wskazano powiązania chemii z trzema składowymi zrównoważonego rozwoju przy uwzględnieniu relacji pomiędzy nimi. Nakreślono filozofię i cele współczesnych badań naukowych w zakresie chemii. Przeanalizowano postulaty „zielonej chemii”, zwracając uwagę na szanse oraz trudności w ich skutecznej realizacji. Dokonano subiektywnego przeglądu pozytywnych przykładów na podstawie doniesień literaturowych i doświadczeń autora. Odnotowano przyjazne środowisku efekty pracy polskich uczonych.

Properties of matter are one of the most basic issues in chemistry and physics education. In this work the possibility of its implementation using the workshop method has been discussed. Descriptions of a series of author’s activating exercises have been presented. Among the teaching problems focused on are understanding of terms denoting properties, assigning properties to substances, the distinction between physical and chemical properties, quantitative determination of properties, relationship between the properties and application. Proposed classes are designed as plays that enable realization of the instructive and upbringing aims, e.g. matching facts, training of creativity, active listening and cooperation within group. The drills suit participants all ages and with different knowledge, thus may be employed both in didactics (tutoring and evaluating) and popularization or even integration activities.