Synthesis and Structural Characterization of the Dinuclear Beryllium Species [Be2Cl2(μ-Cl)2(PCy3)2]
نویسندگان
چکیده
Due to the toxicity of beryllium compounds, the chemistry of beryllium is far less developed than that of its neighboring elements [1, 2]. As berylliumcontaining materials feature unique properties, most of the corresponding research is done in material sciences [3]. With regard to its toxicity, additional work is focused on the coordination chemistry of Be(II) in aqueous solutions [4, 5]. Thus, tetrahedral fourcoordinate Be species, which result from the coordination of ligands containing main group substituents, are well established [6 – 10]. However, the chemistry of transition metal-beryllium interactions was limited to cluster compounds, particularily to examples consisting of Zr [11, 12]. Based on previous success with the facile formation of “metal-only” Lewis pairs between electron-rich Pt0 complexes and p-block metals, e. g. in the case of [(Cy3P)2Pt–AlCl3] [13] and [(Cy3P)2Pt–GaCl3] [14], we sought to extend this rather unusual bonding pattern to Lewis-base adducts between dand s-block metals. BeCl2 as a strong Lewis acid proved to be a promising starting material, and reaction of [Pt(PCy3)2] with BeCl2 in benzene resulted in the platinum beryllium adduct [(Cy3P)2Pt–BeCl2] (1) comprising an unprecedented, electron precise bond between beryllium and a d-block metal [15]. Recent studies showed that related low-valent palladium complexes also show a propensity to act as metal bases towards metal-coordinate boryl and borylene ligands, and therefore behave similar to their platinum congeners [16 – 19]. In the present paper we report on the reaction of [Pd(PCy3)2] with
منابع مشابه
Synthesis, Spectroscopy and Magnetic Characterization of Five Dinuclear Copper(II) Complexes with 2, 3 or 4-Pyridinemethanol as the Ligand
The synthesis, spectroscopy and magnetic characterization of five new dinuclear copper(II) complexes are described. All five compounds have the general formula [Cu2(L)4(O-R)2](Cl)2 or [Cu2(L)2(Cl)2](Cl)2, in which R = CH3 or H, L=2, 3 or 4-pyridinemethanol as L2, L3 or L4, respectively. The title compounds consist of dinuclear units with bridging methoxo groups in [Cu2(L4)4(O-CH3)2](Cl)2, hydro...
متن کاملNew Dinuclear Methoxo-Bridged Manganese(III) complex: Synthesis, Characterization and Usage as New Precursor for Synthesis of Mn2O3 Particles
New dinuclear methoxo-bridged manganese(III) complex [Mn2((MeO-bph)en)2Cl2(m-CH3O)2] (1) was synthesized by template reaction of 2-hydroxy-4-methoxybenzophenone, 1,2-ethanediamine and MnCl2×6H2O with molar ration (1:1:1) in methanol as solvent. The title compound 1 was characterized by...
متن کاملSynthesis and characterization of dinuclear NHC-palladium complexes and their applications in the Hiyama reactions of aryltrialkyoxysilanes with aryl chlorides.
Four linear dinuclear N-heterocyclic carbene (NHC)-palladium complexes {[PdCl(2)(NHC)](2)(μ-L)·xCH(2)Cl(2)} (1-4, L = pyrazine, DABCO) were synthesized through one-pot reactions of imidazolium salts, PdCl(2) and various bidentate N-heterocycles under mild conditions. The compounds were fully characterized by NMR, FT-IR and elemental analysis. Among them, complexes [PdCl(2)L(Mes)](2)(μ-pyrazine)...
متن کاملTwo-dimensional Manganese(II) Coordination Polymer Complex Containing Aqua, Diethyl Phosphate and Chloride Ligands: Synthesis, Spectroscopic Characterization, Thermal Analyses, and Crystal Structure
A new two-dimensional manganese(II) coordination polymer, [Mn(μ-DEP)(μ-Cl)(H2O)2]n (1) (DEP is diethyl phosphate), was prepared from the reaction of MnCl2.4H2O and TEP (TEP is triethyl phosphate) ligand in mixture of H2O/CH3OH (1:10) at 40 °C. Suitable crystals of this complex for crystal structure determination were obtained by slow evaporation of the produced colorless solution at room temper...
متن کاملMono- and dinuclear (η-arene) ruthenium(II) benzaldehyde thiosemicarbazone complexes: Synthesis, characterization and cytotoxicity
Anticancer drugs A series of monoand dinuclear (η-arene) ruthenium(II) complexes were prepared by reaction of thiosemicarbazone ligands derived from benzaldehyde and ruthenium(II) precursors of the general formula [Ru(η-arene)(μ-Cl)Cl]2, where arene=p-PrC6H4Me or C6H5C3H6COOH. These complexes were characterized by NMR and IR spectroscopy, ESI-mass spectrometry and elemental analysis. The molecu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2011