Synthesis and Reactions of P-Rich Silylphosphanes

The unusual coordination chemistry of phosphorus-rich linear and cyclic oligophosphanide anions

“…However, selective preparation of highly reactive alkali metal oligophosphanides is a prerequisite. The synthesis of such compounds, M 2 (P n R n ) (n = 2-4), was described more than 40 years ago by reductive cleavage of the corresponding cyclooligophosphanes with Li, Na or K [27], and other alkali metal compounds, such as K[cyclo-(P 3 Bu t 2 )] (25) [29], K[cyclo-(P 5 Ph 4 )] (26) [30], and Li[cyclo-(P n Bu t n−1 )] (n = 3 (27), 4 (28), 5 (29)) [31,32], were also reported, but these compounds were only obtained as inseparable mixtures. …”

Synthese und Molekülstruktur der Cu4P8‐Käfigverbindung [Cu4(P4Ph4)2(PCyp3)3]

“…[1,2] Später erwies sich die 31 P-NMR-Spektroskopie als eine wertvolle Methode, um die Alkalimetallsalze M 2 (P n R n ) zu charakterisieren. [3,4] Zudem wurden auch die Alkalimetallverbindungen K[cyclo-(P 3 tBu 2 )], [2] K[cyclo-(P 5 Ph 4 )] [5] und Li[cyclo-(P n tBu nÀ1 )] (n = 3-5) [6,7] beschrieben, sie konnten jedoch nicht in reiner Form isoliert werden.…”

Syntheses and Molecular Structures of Novel Alkali Metal Tetraorganylcyclopentaphosphanides and Tetraorganyltetraphosphane‐1,4‐diides

“…[3,4] Even today, the number of compounds readily accessible in pure form is still small. [5] Thus, the alkali metal compounds K[cyclo-(P 3 tBu 2 )], [3] K[cyclo-(P 5 Ph 4 )], [5] and Li[cyclo-(P n tBu nϪ1 )] (n ϭ 3Ϫ5) [6,7] were only obtained as inseparable mixtures, and characterized by 31 P NMR spectroscopy. Only recently, we reported the targeted high-yield synthesis of Na[cyclo-(P 5 tBu 4 )] as well as preliminary results of its use in coordination chemistry.…”