نتایج جستجو برای: dinuclear and monohydroxo bridged
تعداد نتایج: 16828771 فیلتر نتایج به سال:
The title complex, [Sm(2)(C(3)H(5)O(2))(6)(C(12)H(8)N(2))(2)], is a dinuclear centrosymmetric mol-ecule, in which two crystallographically equivalent Sm atoms, separated by 3.9502 (2) Å, are bridged by four propanoate anions. Each Sm atom is coordinated by two N atoms from one chelating phenanthroline ligand and seven carboxylate O atoms from five propanoate anions, to form a distorted tricappe...
Bis[μ2-1,1-(butane-1,4-diyl)-2,3-dicyclohexylguanidinato]bis[(tetrahydrofuran)lithium](Li—Li)
In the dinuclear centrosymmetric title complex, [Li(2)(C(17)H(30)N(3))(2)(C(4)H(8)O)(2)], the Li(+) cation is coordinated by three N atoms from two guanidinate ligands and an O atom from tetra-hydro-furan (THF) in a strongly distorted tetrahedral environment. In the guanidinate-bridged THF-stabilized dimer the Li⋯Li separation is short at 2.479 (8) Å.
In the title dinuclear complex, [Zn(2)I(4)(C(6)H(8)N(6))(2)], two Zn(II )atoms are bridged by two 1,2-bis-(1,2,4-triazol-4-yl)ethane (btre) ligands, forming a centrosymmetric metallacycle. The coordination geometry of the Zn(II) ion is distorted tetra-hedral with the coordination sphere formed by two N atoms from the triazole rings of two symmetry-related btre ligands and two iodide ligands.
In the title centrosymmetric dinuclear zinc(II) complex, [Zn(2)(C(36)H(42)N(4)O(2))(NO(3))(2)], the Zn(II) atom has a distorted octa-hedral geometry, defined by two N atoms and two O atoms from the macrocyclic ligand and two O atoms from a chelating nitrate anion and are bridged by two phenolate O atoms, forming a four-membered Zn(2)O(2) ring.
The title dinuclear copper(I) complex, {[Cu(2)(C(2)H(3)N)(C(12)H(10)N(2))(C(25)H(22)P(2))(2)](BF(4))(2)}(n), contains 1,2-di-4-pyridyl-ethene, bis-(diphenyl-phosphino)methane and acetonitrile ligands. The two Cu atoms, one with an N(2)P(2) ligand set and the other with an NP(2) ligand set, are bridged by two bis-(diphenyl-phosphino)methane ligands, forming an eight-membered ring.
The interactions of four antitumor azolato-bridged dinuclear platinum(II) complexes, [{cis-Pt(NH(3))(2)}(2)(μ-OH)(μ-azolato)](2+), with calf thymus DNA were monitored dose- and time-dependently, by using circular dichroism. Complexes 1-4 reacted with DNA via a two-step interaction that comprised a prompt diffusion-controlled reaction, which induced a B- to C-form transition, and a relatively sl...
In the title salt, [C(6)H(5)N(CH(3))(3)][Sn(2)Br(5)(C(7)H(6)Br)(4)], the Sn(IV) atoms of the dinuclear anion are bridged by a Br atom; the Sn-Br(bridge) bond lengths are 2.9818 (5) and 3.0470 (5) Å. Both Sn atoms show a distorted cis-trigonal-bipyramidal coordination geometry that is distorted towards a square pyramid. In the crystal, weak C-H⋯π inter-actions occur between anions and cations.
The title complex, [Cu(2)(C(14)H(11)ClNO)(2)Cl(2)], has a centrosymmetric dinuclear structure where two symmetry-related copper(II) metal centres are bridged by the O atoms of two phen-oxy groups. Each copper(II) centre displays a distorted tetra-hedral coordination provided by one N atom and two O atoms from two Schiff base ligands and by one Cl atom. The Cu⋯Cu separation is 3.0702 (9) Å.
A chemoselective hydrosilylation method for aldehydes is developed using a ruthenium catalyst [(Ru(p-cymene)Cl2)2] and triethylsilane; a mono hydride bridged dinuclear complex [{(η(6)-p-cymene)RuCl}2(μ-H-μ-Cl)] and a Ru(iv) mononuclear dihydride complex [(η(6)-p-cymene)Ru(H)2(SiEt3)2] are identified as potential intermediates in the reaction and the proposed catalytic cycle involves a 1,3-hydri...
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