Controlled Decomposition of an Indium Trihydride Adduct:  Synthesis and Characterization of the First Mixed-Oxidation-State Indium Sub-halide Complex Anion, [In5Br8(quinuclidine)4]-

2005 ◽  
Vol 44 (14) ◽  
pp. 4909-4911 ◽  
Author(s):  
Marcus L. Cole ◽  
Cameron Jones ◽  
Marc Kloth
Keyword(s):  
Oxidation State ◽  
Complex Anion ◽  
Synthesis And Characterization ◽  
Halide Complex ◽  
Mixed Oxidation

Synthesis and Characterization of Triammine-triaquaruthenium(III) Trifluoromethanesulfonate

1993 ◽  
Vol 46 (2) ◽  
pp. 221 ◽  
Author(s):  
AA Diamantis ◽  
PS Moritz
Keyword(s):  
Organic Solvents ◽  
Oxidation State ◽  
Trifluoromethanesulfonic Acid ◽  
Starting Material ◽  
Synthesis And Characterization ◽  
Spectroscopic Techniques ◽  
Mixed Oxidation ◽  
Pt Black

[ Ru (NH3)3(OH2)3](CF3SO3)3 was prepared from RuCl3(NH3)3 by using trifluoromethanesulfonic acid and Ag2CO3, and characterized by microanalytical , electrochemical and spectroscopic techniques. The complex is soluble in water and in many organic solvents and is a convenient starting material for the preparation of triammine complexes. [RU(NH3)3(OH2)3]3+ has pKa1 3.77�0.04 and pKa2 6.93�0.04 at 25°C, and an E½ of -120 mV at pH 1.5 and -190 mV at pH 5. In the u.v . spectrum λmax is at 251 nm (є 1150 mol-1 dm3 cm-1) in 0.1 M H+ and at 296 nm (є 1760 mol-1 dm3 cm-1) at pH 5. [ Ru (NH3)4(OH2)2]3+ has pKa1 3.96�0.4 and pKa2 7.09�0.04 and E1/2 of -140mV at pH 1 and -200mV at pH 5. In the u.v. spectrum λmax is at 254 nm (є 1200 mol-1 dm3 cm-1) in 0.1 M H+ and at 296 nm (є 2650 mol-1 dm3 cm-1) at pH 5. [ Ru (NH3)3(OH2)3]2+ can be prepared in situ by reduction with Zn(Hg) or H2/Pt black; at high pH, the reduction proceeds via a blue mixed-oxidation-state intermediate.

Homoleptic Quasilinear Metal(I/II) Silylamides of Cr – Co with Phenyl and Allyl Functions – Impact of Oxidation State on Secondary Ligand Interactions

2021 ◽  
Author(s):  
Ruth Weller ◽  
Lutz Ruppach ◽  
Alena Shlyaykher ◽  
Frank Tambornino ◽  
Gunnar Werncke
Keyword(s):  
Oxidation State ◽  
Synthesis And Characterization ◽  
Ligand Interactions ◽  
Secondary Ligand

Herein we describe the synthesis and characterization of a variety of new quasilinear metal(I/II) silylamides of the type [M(N(Dipp)SiR3)2]0,− (M = Cr − Co) with different silyl substituents (SiR3 =...

scholarly journals Synthesis and Characterization of Super Bulky β-Diketiminato Group 1 Metal Complexes

Inorganics ◽  
2021 ◽  
Vol 9 (9) ◽  
pp. 72
Author(s):  
Dafydd D. L. Jones ◽  
Samuel Watts ◽  
Cameron Jones
Keyword(s):  
Nmr Spectroscopy ◽  
Alkali Metal ◽  
Metal Complexes ◽  
Oxidation State ◽  
Synthesis And Characterization ◽  
X Ray Crystallography ◽  
Low Oxidation State ◽  
Bulky Ligand ◽  
Group 1

Sterically bulky β-diketiminate (or Nacnac) ligand systems have recently shown the ability to kinetically stabilize highly reactive low-oxidation state main group complexes. Metal halide precursors to such systems can be formed via salt metathesis reactions involving alkali metal complexes of these large ligand frameworks. Herein, we report the synthesis and characterization of lithium and potassium complexes of the super bulky anionic β-diketiminate ligands, known [TCHPNacnac]− and new [TCHP/DipNacnac]− (ArNacnac = [(ArNCMe)2CH]−) (Ar = 2,4,6-tricyclohexylphenyl (TCHP) or 2,6-diisopropylphenyl (Dip)). The reaction of the proteo-ligands, ArNacnacH, with nBuLi give the lithium etherate compounds, [(TCHPNacnac)Li(OEt2)] and [(TCHP/DipNacnac)Li(OEt2)], which were isolated and characterized by multinuclear NMR spectroscopy and X-ray crystallography. The unsolvated potassium salts, [{K(TCHPNacnac)}2] and [{K(TCHP/DipNacnac)}∞], were also synthesized and characterized in solution by NMR spectroscopy. In the solid state, these highly reactive potassium complexes exhibit differing alkali metal coordination modes, depending on the ligand involved. These group 1 complexes have potential as reagents for the transfer of the bulky ligand fragments to metal halides, and for the subsequent stabilization of low-oxidation state metal complexes.

Synthesis of low-oxidation-state germanium clusters comprising a functional anchor group – synthesis and characterization of [(Ge0)5(Ge-R)3(Ge-(CH2)n-CHCH2)] with R = Si(SiMe3)3

2018 ◽  
Vol 47 (10) ◽  
pp. 3223-3226 ◽  
Author(s):  
Sabine Frischhut ◽  
Thomas F. Fässler
Keyword(s):  
Oxidation State ◽  
Synthesis And Characterization ◽  
Anchor Group ◽  
Low Oxidation State ◽  
Germanium Clusters

The first alkenyl-functionalized, uncharged deltahedral germanium clusters [{Si(SiMe3)3}3Ge9(CH2)nCHCH2] (n = 1 or 3) comprising five Ge0 atoms are presented.

Co-Containing LDHs Synthesized by the Microwave-Hydrothermal Method

2006 ◽  
Vol 514-516 ◽  
pp. 1241-1245
Author(s):  
Patricia Benito ◽  
Maria Herrero ◽  
Francisco Martin Labajos ◽  
Vicente Rives
Keyword(s):  
Oxidation State ◽  
Layered Double Hydroxides ◽  
Treatment Time ◽  
Synthesis And Characterization ◽  
Thermal Treatments ◽  
Microwave Hydrothermal ◽  
Microwave Hydrothermal Method ◽  
Divalent Cobalt ◽  
Double Hydroxides

The synthesis and characterization of Co,Al Layered Double Hydroxides (LDHs) containing carbonate is reported. The solids have been submitted to several thermal treatments, hydrothermal and microwave-hydrothermal, modifying both the treatment time and temperature, with the main aim of studying their influence on the crystallinity of the solids and on the stabilization of divalent cobalt oxidation state. The results show that whichever the temperature and time used the only phase detected was the hydrotalcite, and that the cobalt cations keep the divalent oxidation state.

Cycloaddition of Phosphaalkynes to High-Oxidation-State Metal Alkylidenes:  Synthesis and Characterization of a Unique Phosphametallacyclobutene via an Alkoxide Ligand Shift

1996 ◽  
Vol 15 (1) ◽  
pp. 16-18 ◽  
Author(s):  
Gregory M. Jamison ◽  
Randall S. Saunders ◽  
David R. Wheeler ◽  
Mark D. McClain ◽  
Douglas A. Loy ◽  
...  
Keyword(s):  
Oxidation State ◽  
Synthesis And Characterization ◽  
High Oxidation State ◽  
High Oxidation
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