during the islamic period of iran except for public complexes including buildings as bazaar, reservoir, caravansary, etc. there were burial complexes that occupy a special place in the architecture of the epoch. these complexes were first built as the burial ground of a famous political or religious figure and along the time other buildings such as mosque, madreseh (school), monastery, caravans...

In a previous work, the ability of gold-carbonyl bond dissociation energies (BDEs) to describe ligand effects in gold(I) complexes was probed using collision-induced measurements. Despite large experimental error technique, results agreed with theoretical description these effects. We propose here another approach evaluate BDEs [LAu-CO]+ complexes, by Blackbody Infrared Radiative Dissociation (...

BACKGROUND Poly nitro aromatic compounds are high energy density materials. Carbon-bonded anionic sigma complexes derived from them have remarkable thermal stability. At present there is a strong requirement for thermally stable insensitive high energy density materials (IHEDMs) in the energetic field which necessitates the present investigation. RESULTS Three new carbon-bonded anionic sigma ...

BACKGROUND Site-specific protein-DNA complexes vary greatly in structural properties and in the thermodynamic strategy for achieving an appropriate binding free energy. A better understanding of the structural and energetic engineering principles might lead to rational methods for modification or design of such proteins. RESULTS A novel analysis of ten site-specific protein-DNA complexes reve...

Magnesium plays a special role in RNA function and folding. Although water is magnesium's most common first-shell ligand, the oxyanions of RNA have significant affinity for magnesium. Here we provide a quantum mechanical description of first-shell RNA-magnesium and DNA-magnesium interactions, demonstrating the unique features that characterize the energetics and geometry of magnesium complexes ...

The central role that non‐covalent interactions play in many fields of science and technology has been widely recognized for many years. Between this kind of interactions, those that involve π‐systems deserve a particular interest because their great importance in biological environments. The participation of tyrosine, phenylalanine, tryptophan and histidine residues in the ...