C₆H₅P[Mn(CO)₂C₅H₅]₂: A Phosphinidene Complex with Trigonal Planar Coordinated Phosphorus(I)

Phosphinidene-bridged binuclear complexes

“…For instance, Hermann and co-workers reported the formation of the phosphinidene 63 via the photochemical dehydrogenation of the phosphane complex [MnCp*(CO) 2 (PH 3 )] (Scheme 33) [64]. Unfortunately, this complex was not thoroughly characterised at the time and its formulation relied on its similarities with related complexes prepared earlier by the group of Huttner [65].…”

The structure and reactivity of arsenic compounds: Biological activity and drug design

“…Relatively few Bi compounds are known and, in general, they are more complex structurally. The structures of Sb compounds are more varied than those of As or P. Table 2 lists the range of stereochemistries known for As and other Group V elements together with the coordination numbers [24][25][26][27][28][29].…”

“…[52,53,54,55,56,57,58] [Cr(CO)5 ] (C1) As [Mn(CO)2 Cp] [61]. Both P [25] and Sb [26] derivatives of the first compound are also known. In all these compounds, the geometry about the E atom is approximately planar as in Fig.…”

Insight into the Reaction of a Dinuclear Phosphinidene Complex with Nitriles

“…[12] If this reaction is comparedw ith the reaction of 1 with benzonitrile, [8] which was complete within two hours instead of ten days,i tc an be suggested that the second nitrile group has ar etarding effect on the reaction. [17] This shortening can be attributed to the different hybridization of the Pl one pair and the p back donation from the tungsten atoms into the empty po rbital at the phosphorus atom, [16] which was also observed for the phosphinidenec omplex 1. The strongest signal is as inglet at d = 548.1 ppm ( 1 J(P,W) = 195 Hz), which corresponds to 3.H owever,n os ignal was found at about 90 ppm, which would be expected for ap roduct similar to A.Pure 3 could be obtained from this reaction in 45 %y ield.…”

“…The first reaction step is likely the formation of aL ewis acid/base adduct, which is, in the gas phase, exothermic by 31-45 kJ mol À1 but endergonic by [16][17][18][19][20][21][22][23][24][25][26][27][28][29] kJ mol À1 at 25 8C. The first reaction step is likely the formation of aL ewis acid/base adduct, which is, in the gas phase, exothermic by 31-45 kJ mol À1 but endergonic by [16][17][18][19][20][21][22][23][24][25][26][27][28][29] kJ mol À1 at 25 8C.…”