نتایج جستجو برای: transition metal compounds
تعداد نتایج: 649564 فیلتر نتایج به سال:
The synthesis, molecular and electronic structures, redox properties of pyrazine(diimine) (PzDI) metal dihalide complexes (DiPPPZDI)MX2 (DiPP = 2,6-diisopropylphenyl; M Mn, Fe, Co, Ni; X Cl, Br) are presented compared. reduced to (DiPPPZDI)MX monohalide complexes, the role ligand non-innocence in structure compounds is examined compared related pyridine(diimine) (PDI) compounds. were characteri...
the one-third paradigm of pbe0 density functional, pbe0-1/3, has shown to be a successful method for various properties. in this paper, the applicability of pbe0-1/3 is put into broader perspective for transition metals chemistry. as a comparative study, the performance of pbe0 and pbe0-1/3 has been assessed for geometries and vibrational frequencies of some transition metal hydrides and transi...
We have developed methods to exfoliate MoS 2 in large quantities in surfactant-water solutions. This method can be extended to a range of other layered compounds. The layered material tends to be exfoliated as relatively defect free flakes with lateral sizes of 100s of nm. in layered crystals and can be metals, semiconductors or insulators. [1] In addition, some are thermoelectric materials, [2...
High Energy Density Materials (HEDMs) are a new generation of high-energetic materials with high-performance and safety and consist of several different types with different properties. One category of this kind of HEDMs explosives are high energy metal organic frameworks (HE-MOFs) that have more appropriate performance and safety compared to conventional explosives (HEMs) and even other HEDMs....
Metal organic complexes consisting of transition metal centers linked by organic ligands, may show bistability which enables the system to be observed in two different electronic states depending on external condition. One of the spectacular examples of molecular bistability is the spin-crossover phenomena. Spin-Crossover (SCO) describes the phenomena in which the transition metal ion in the co...
The photoproperties of main group metal complexes with the electron configurations s2 (e.g. Tl+, Sb3+, Te4+) and so (e.g. T13+, Pb4+) were studied on the basis of a general concept which relates characteristic excited states to typical photophysical and photochemical processes. The photochemistry is dominated by metalcentered sp (s2) and ligand to metal charge transfer (so) excited states which...
Novel oligomer metal complexes (2a-f) of the ligand 2,5-bis((4-bromophenyl)carbamoyl) terephthalic acid (1) were prepared using transition metal salts and characterized by various spectroscopic techniques. The geometry of oligomer metal complexes was carried out by electronic spectral analysis and magnetic measurement studies. Polymeric properties have also been carried out. Ligand was synthesi...
During the last twenty years the Polyhedral Skeletal Electron Pair Theory and the isolobal analogy have provided a theoretical basis for the rapid experimental developments, which have occurred in metal cluster chemistry. These theoretical principles have been underpinned by m.o. calculations on specific molecules and more generally by the Tensor Surface Harmonic Theory. This paper will review ...
Transition metals have an important place within medicinal inorganic chemistry. Transition metals exhibit different oxidation states and can interact with a number of negatively charged molecules. This activity of transition metals led to the recent development of drugs which are based on metals and are considered to be potential candidates for pharmacological and therapeutic applications. This...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید