نتایج جستجو برای: nitrogen donor ligands
تعداد نتایج: 285320 فیلتر نتایج به سال:
Stabilization of copper( ii ) azide by application various nitrogen-rich azole ligands resulted in a series powerful energetic coordination compounds with desired properties for primary explosives.
In the title compound, [Co(NCS)(2)(C(16)H(16)N(4)O(2))](n), the octa-hedrally coordinated Co(II) ion lies on a crystallographic inversion center, with trans isothio-cyanate ligands. Pyridyl N-donor atoms and formyl O-donor atoms from exotetra-dentate bis-(4-pyridyl-carbon-yl)piperazine (4-bpfp) ligands link the Co(NCS)(2) units into a [Co(NCS)(2)(4-bpfp)](n) coordination polymer layer that is o...
A new family of Tetraazamacrocyclic Ru(II) complexes [RuCl2(L)] (where L = N4 donor macrocyclic ligands) have been synthesized by the reactions of [RuCl2(DMSO)4] with some of macrocyclic Schiff base ligands containing N4 donor groups. The complexes were characterized by elemental analysis, IR, H, C NMR, mass, electronic, molar conductance and magnetic susceptibility measurements. An octahedral ...
The field of asymmetric catalysis is rapidly developing and the chiral ligands play a key role in enantioselective transition‐metal catalysis. electron‐rich N ‐heterocyclic carbenes (NHCs) have established themselves as popular class stereodirecting ancillary to catalyze organic transformations more efficient ways. Several novel complexes combination with tailored ligand design emerged during l...
The Kotodesh genotype of the nickel (Ni) hyperaccumulator Alyssum murale was examined to determine the compartmentalization and internal speciation of Ni, and other elements, in an effort to ascertain the mechanism used by this plant to tolerate extremely high shoot (stem and leaf) Ni concentrations. Plants were grown either hydroponically or in Ni enriched soils from an area surrounding an his...
Covalent grafting of MCM-41 with 3-chloropropyl trimethoxysilane and subsequent reaction respectively with acacdien and complexation with MoO2(acac)2 afforded MoO2acacdien@MCM-41. X-ray diffraction and nitrogen sorption analyses revealed the preservation of the textural properties of the support as well as accessibility of the channel system despite sequential reduction in surface area, pore vo...
Electron donor–acceptor (EDA) complexes are characterized by charge-transfer (CT) processes between electron-rich and electron-poor counterparts, typically resulting in a new absorption band at higher wavelength. In this paper, we report series of novel 2,6-di(imino)pyridine ligands with different aromatic substituents their 1:2 (metal/ligand) zinc(II) which the formation CT species is promoted...
Despite the fact that in mass consciousness nuclear power is associated with increased environmental risks, this type of energy today remains one cleanest, most efficient and carbon neutral. Further development hampered by problem appropriate handling spent fuel (SNF). A very attractive concept closed cycle has been developed to solve it. real-life implementation requires technological processe...
We have expanded the ligand knowledge base for bidentate P,P- and P,N-donor ligands (LKB-PP, Organometallics2008, 31, 1372-1383) by 208 ligands and introduced an additional steric descriptor (nHe8). This expanded knowledge base now captures information on 334 bidentate ligands and has been processed with principal component analysis (PCA) of the descriptors to produce a detailed map of bidentat...
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