Photoinduced NO-linkage isomers were investigated in the solid state of labelled trans-[Ru(14/15NO)(py4)F](ClO4)2 complex by combined IR-spectroscopy and DFT calculations. Based on experimental data calculations this isotopically 14/15NO nitrosyl compound, we present a complete assignment vibrational bands three linkage range from 4000 to 200 cm-1. The calculated IR-spectra match well with allo...

Oligoribonucleotides have been synthesized directly from unprotected ribonucleosides by a chemical polymerization approach using phosphorus tris-azoles. The procedure involves two steps: (i) the reaction of unprotected ribonucleoside with phosphorus tris-azole and (ii) the in situ oxidation of the resulting phosphite with iodine and water. Several phosphorus tris-azoles were investigated for ge...

The binding properties of a peptidoglycan recognition protein are translated via combinatorial chemistry into short peptides. Non-adjacent histidine, tyrosine, and arginine residues in the protein's binding cleft that associate specifically with the glycan moiety of a peptidoglycan substrate are incorporated into linear sequences creating a library of 27 candidate tripeptide reagents (three pos...

Six palladium and one platinum compound containing dimeric dinuclear cations of the type [M2(a–a)2(μ-7tpON ,N )2] 2 are presented, a–a representing a bidentate chelating amine and 7tpO being the anionic form of the ligand 4,7-dihydro-7-oxo[1,2,4]triazolo[1,5-a]pyrimidine, which bridges the metal atoms through its nitrogen atoms in positions 3 and 4. Two linkage isomers are possible for such com...

Materials that exhibit nanooptomechanical transduction in their single-crystal form have prospective use light-driven molecular machinery, nanotechnology, and quantum computing. Linkage photoisomerization is typically the source of such coordination complexes, although isomers tend to undergo only partial photoconversion. We present a transducer, trans-[Ru(SO2)(NH3)4(3-bromopyridine)]tosylate2,...

The kinetics of ultrafast photoinduced structural changes in linkage isomers is investigated using Na2[Fe(CN)5NO] as a model complex. The buildup of the metastable side-on configuration of the NO ligand, as well as the electronic energy levels of ground, excited, and metastable states, has been revealed by means of time-resolved extreme UV (XUV) photoelectron spectroscopy in aqueous solution, a...

Photoinduced linkage isomers (PLI) of the nitrosyl ligand in single crystals Na2[Fe(CN)5NO] ⋅ 2H2O (SNP, sodium nitroprusside) have been studied by X-ray absorption spectroscopy (XAS) at low temperatures, using a cryostat allowing in-situ polarized LASER irradiation and XAS measurements. In XANES (X-ray near edge structure) region significant modification pre-edge peak intensities is observed a...

One metastable linkage nitrosyl isomer can be generated in [Pt(NH(3))(4)Cl(NO)]Cl(2) by irradiation with light in the red spectral range. The potential energy barrier for the thermal relaxation of the metastable state to the ground state has an amount of E(A) = (0.27 +/- 0.03) eV. The decay follows the Arrhenius law and E(A) is independent of temperature. At room temperature the metastable stat...

The study of photoinduced processes in crystals is a frontier area of crystallographic research, which requires development of novel experimental and computational methods. In a series of studies, long-lived metastable states, generated upon photoirradiation of transition-metal nitrosyl complexes, have been identified as ç nitrosyl and isonitrosyl linkage isomers, and their detailed geometry ha...