scholarly journals N-heterocyclic carbene induced reductive coupling of phosphorus tribromide. Isolation of a bromine bridged P–P bond and its subsequent reactivity

2016 ◽  
Vol 7 (12) ◽  
pp. 6981-6987 ◽  
Author(s):  
Jordan B. Waters ◽  
Thomas A. Everitt ◽  
William K. Myers ◽  
Jose M. Goicoechea
Keyword(s):  
Thermal Treatment ◽  
Oxidation State ◽  
Reductive Coupling ◽  
Phosphorus Tribromide ◽  
Phosphorus Containing ◽  
Low Oxidation State

Thermal treatment of a 1:1 adduct of phosphorus tribromide and 1,3-bis(2,6-diisopropylphenyl)-imidazol-2-ylidene (IPr) results in the formation of a reduced phosphorus-containing dimer, which can be employed to access a range of low oxidation state compounds.

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.

Amido Silicon Chalcogenide Compounds with Unprecedented Cluster Cores and Low Oxidation State Silicon Atoms

2019 ◽  
Vol 2019 (44) ◽  
pp. 4719-4726 ◽  
Author(s):  
Kevin Schwedtmann ◽  
Alexander Hepp ◽  
Kai Schwedtmann ◽  
Jan J. Weigand ◽  
Felicitas Lips
Keyword(s):  
Oxidation State ◽  
Low Oxidation State ◽  
Cluster Cores

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.

scholarly journals Recent advances in low oxidation state aluminium chemistry

2020 ◽  
Vol 11 (27) ◽  
pp. 6942-6956 ◽  
Author(s):  
Katie Hobson ◽  
Claire J. Carmalt ◽  
Clare Bakewell
Keyword(s):  
Oxidation State ◽  
Recent Advances ◽  
Slow Progress ◽  
Low Oxidation State ◽  
Aluminium Chemistry

Documenting the synthesis and isolation of novel low oxidation state aluminium (Al) compounds, which until recently has seen relatively slow progress over the 30 years since such species were first isolated.

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