Transition metal–hydrogen–alkali metal bonds: syntheses and structures of W(PMe3)3H5Na(15-crown-5), W(PMe3)3H5K(18-crown-6), and [W(PMe3)3H5Li]4

1985 ◽  
pp. 1462-1464 ◽  
Author(s):  
Judith A. Bandy ◽  
Adam Berry ◽  
Malcolm L. H. Green ◽  
Keith Prout
Keyword(s):  
Transition Metal ◽  
Alkali Metal ◽  
Metal Bonds

.alpha.-Sulfonyl Carbanion-Transition-Metal Bonds. Alkali-Metal .alpha.-Sulfonyl Carbanions and Their Reactivity with Metal Complexes

1995 ◽  
Vol 14 (4) ◽  
pp. 1756-1760 ◽  
Author(s):  
Pier Giorgio Cozzi ◽  
Carlo Floriani ◽  
Angiola Chiesi-Villa ◽  
Corrado Rizzoli
Keyword(s):  
Transition Metal ◽  
Alkali Metal ◽  
Metal Complexes ◽  
Sulfonyl Carbanions ◽  
Metal Bonds

scholarly journals Pentaphosphaferrocene-mediated synthesis of asymmetric organo-phosphines starting from white phosphorus

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Stephan Reichl ◽  
Eric Mädl ◽  
Felix Riedlberger ◽  
Martin Piesch ◽  
Gábor Balázs ◽  
...  
Keyword(s):  
Transition Metal ◽  
Alkali Metal ◽  
White Phosphorus ◽  
Starting Material ◽  
Efficient Manner ◽  
Subsequent Step ◽  
Reaction Cycles

AbstractThe synthesis of phosphines is based on white phosphorus, which is usually converted to PCl3, to be afterwards substituted step by step in a non-atomic efficient manner. Herein, we describe an alternative efficient transition metal-mediated process to form asymmetrically substituted phosphines directly from white phosphorus (P4). Thereby, P4 is converted to [Cp*Fe(η5-P5)] (1) (Cp* = η5-C5(CH3)5) in which one of the phosphorus atoms is selectively functionalized to the 1,1-diorgano-substituted complex [Cp*Fe(η4-P5R′R″)] (3). In a subsequent step, the phosphine PR′R″R‴ (R′ ≠ R″ ≠ R‴ = alky, aryl) (4) is released by reacting it with a nucleophile R‴M (M = alkali metal) as racemates. The starting material 1 can be regenerated with P4 and can be reused in multiple reaction cycles without isolation of the intermediates, and only the phosphine is distilled off.

Bismetallocenes: Lanthanoid-Transition-Metal Bonds through Alkane Elimination

2008 ◽  
Vol 47 (34) ◽  
pp. 6469-6472 ◽  
Author(s):  
M. V. Butovskii ◽  
O. L. Tok ◽  
F. R. Wagner ◽  
Rhett Kempe
Keyword(s):  
Transition Metal ◽  
Metal Bonds ◽  
Alkane Elimination
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