A5050652650- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Boron Compounds in Chemistry
- Chemical Synthesis and Characterization
- Inorganic Chemistry and Materials
- Radioactive element chemistry and processing
- Organoboron and organosilicon chemistry
- Organometallic Complex Synthesis and Catalysis
- Catalysis and Oxidation Reactions
- Zeolite Catalysis and Synthesis
- Synthesis and Characterization of Heterocyclic Compounds
- Boron and Carbon Nanomaterials Research
- Metal-Organic Frameworks: Synthesis and Applications
- Synthesis and Biological Evaluation
- Hydrogen Storage and Materials
- Synthesis and Reactions of Organic Compounds
- Magnetism in coordination complexes
- Supramolecular Chemistry and Complexes
- Radiopharmaceutical Chemistry and Applications
University of Tübingen
2007-2008
Aiming high: The coordination of the tin ligand stanna-closo-dodecaborate at Ni, Pd, and Pt results in formation compounds with high negative charges. These complexes contain metal centers numbers formal oxidation states. In case platinum derivative, a far upfield chemical shift 195Pt NMR spectrum (δ=−7724 ppm) was observed.
The synthesis of [MePPh3][SnCB10H11] is presented together with its structural, NMR, and 119Sn Mössbauer spectroscopical characterization. Two transition metal complexes, [Au4(PPh3)4(SnCB10H11)2] [Bu4N]2[Rh(PPh3)2(SnCB10H11)3], the carbastannaborate coordinated at rhodium or gold via tin atom are presented, structural NMR data discussed.
The synthesis and characterization of three ruthenium complexes [Bu(3)MeN][Ru(PPh(3))(2)(NH(2)-B(12)H(11))Cl], [Bu(4)N][Ru(dppb)(NH(2)-B(12)H(11))Cl] [RuCO(PPh(3))(2)(NH(2)-B(12)H(11))] with amino-closo-dodecaborate as the coordinating ligand are described.
Hoch hinaus: Die Koordination des Zinnliganden Stanna-closo-dodecaborat an Ni, Pd und Pt führt zur Bildung negativ geladener Komplexionen, die Metallzentren M mit hohen Koordinationszahlen in formalen Oxidationsstufen enthalten (siehe Bild; orange B, rot Sn, beige M). Im Fall Platinderivates wurde im 195Pt-NMR-Spektrum eine chemische Verschiebung bei sehr hohem Feld (δ=−7724 ppm) beobachtet.
The reaction of the sodium salt 1-amino-closo-dodecaborate [Na]2[NH2-B12H11] ([Na]2[1]) with [Au(PPh3)Cl] and [Ni(THF)2(Br)2] led to eta 1(N) coordination 1in [Na][Au(PPh3)(NH2-B12H11)] (2) [Na]6[Ni(NH2-B12H11)4] (3), respectively. Furthermore, 2(N,BH) was found in [MePPh3][Rh(PPh3)2(NH2-B12H11)] (4), which synthesized by [MePPh3][Na][1] [Rh(PPh3)3Cl]. All compounds were characterized single crystal X-ray diffraction heteronuclear NMR spectroscopy.
The following chalcogen compounds of stanna-closo-dodecaborate were synthesized and characterized: the tetrameric oxide [(O-SnB(11)H(11))(4)](8-) from reaction with hydrogen peroxide sulfide selenide [S-SnB(11)H(11)](2-), [Se-SnB(11)H(11)](2-) elemental sulfur selenium, respectively. stannaborate derivatives characterized by (119)Sn Mössbauer spectroscopy single crystal structural analysis. character bond between tin group 16 elements was studied extensively using quantum chemical methods.
The reaction of Vaska's complex [IrCl(CO)(PPh3)2] with stanna-closo-dodecaborate [SnB11H11]2− (1) resulted in the formation trigonal bipyramidal iridium(I) compound [Ir(SnB11H11)2(CO)(PPh3)2]3− (2). In this compound, one stannaborate moiety can be readily substituted CO or ethylene at RT and atmospheric pressure to give compounds [Et4N][Ir(SnB11H11)(CO)2(PPh3)2] (3) [Me4N][Ir(SnB11H11)(CO)(C2H4)(PPh3)2] (4). Oxidative addition H2 was accomplished by 2 H2, yielding iridium(III)...
The reaction of stanna- closo-dodecaborate [SnB 11H 11] (2-) (1) with CdBr 2 gave the tetrahedrally coordinated compound [Cd(SnB 11) 4] (6-)(2). same coordination mode can be found in [Hg(SnB (6-) (3), which was obtained by stannaborate Hg 2Cl2. Both compounds were characterized single crystal X-ray analysis and heteronuclear NMR techniques.
The evolution and distribution of products during the reaction dimethyl ether-to-olefins on SAPO-34 were studied in a fixed-bed reactor at different severities ranging from 0.2 to 20 h–1. Thereby, time scale deactivation low smaller than 1 h–1 is slow enough for online gas chromatography (GC) give detailed information changes product network. However, higher commercially relevant >1 h–1, becomes too fast be adequately followed by GC. In order follow rapidly changing products, FTIR...
Abstract The reaction of the nickel complexes [(dppm)NiBr 2 ] [dppm = 1,1‐bis(diphenylphosphanyl)methane] and [(dppe)NiBr [dppe 1,2‐bis(diphenylphosphanyl)ethane] with stanna‐ closo ‐dodecaborate [Bu 3 NH] [SnB 11 H ( 1 ) yielded trigonal‐bipyramidal coordination compounds 4 [(dppm)Ni(SnB [(dppe)Ni(SnB ]( ). square‐planar compound [(Im i Pr Me Ni(SnB (Im 1,3‐diisopropyl‐4,5‐dimethyl‐imidazoliumylidene) could be obtained by N‐heterocyclic carbene complex NiBr new were characterized...
The square-planar platinum(II) compound [Pt(SnB11H11)4]6− can be readily protonated in the presence of stanna-closo-dodecaborate, resulting formation octahedral platinum(IV) [PtH(SnB11H11)5]7−. When this reaction is carried out with DCl, corresponding deuteride derivative [PtD(SnB11H11)5]7− obtained.
C 22 H 21 F 9 N 4 O 2 S, monoclinic, P12 1 /c1(no.14), a =15
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at glance that was extracted from about 200 leading journals. To access of an article which published elsewhere, please select “Full Text” option. The original trackable via the “References”
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at glance that was extracted from about 200 leading journals. To access of an article which published elsewhere, please select “Full Text” option. The original trackable via the “References”