Synthesis and coordination behavior of a zirconocene bis(borylphosphane)

Monomeric phosphinoboranes

“…It has been applied to the synthesis of the bulky phosphinoboranes 23a-c [18,54], 25 [26] and 26a-d [55] whose properties and reactivity have been extensively studied (see Section 4.3) as well as the borylphosphines 27 [56], 28 [57], 30 [58] and 31a-c and 32 [59] which have been used as ligands (see Section 4.4).…”

“…An unusual bimetallic complex 67 is formed by the sequence of reactions shown in Scheme 27 where the product can be considered to be a molybdenum chelate of a bidentate phosphinoborane 66 which has a zirconocene backbone [57].…”

Synthesis of a transition-metalated phosphinoborane dimer

“…Paine and coworkers [14] reported a phosphinoborane with a zirconocene fragment, Cp 2 Zr[P(H)B-{N i Pr 2 }{N(SiMe 3 ) 2 }] 2 , which was prepared by the reaction of Cp 2 ZrCl 2 with LiP(H)B{N i Pr 2 }{N(SiMe 3 ) 2 } and can be obtained as a monomer. In this complex, the boron and nitrogen atoms have both trigonal planar geometries, apparently demonstrating the strong p interaction between the boron and the nitrogen atoms.…”

Hydrophosphination of boron–boron multiple bonds

“…due to p-donor or carborane substituents) and phosphorus thus retains its lone pair and tetrahedral geometry, are highly electron rich h 1 ligands for transition metal complexes. [9][10][11] By far the most common route for the construction of P-B bonds is salt elimination [12][13][14][15][16][17][18][19] using an alkali metal phosphide, MPR 2 , and a haloborane (Scheme 1A), although other routes are known, including nucleophilic addition of a boryl anion to a chlorophosphine (B), 20 elimination of silyl halide (C), 10,11,21 and cross-coupling of a B-I species with secondary phosphines using a palladium catalyst (D). 9 Of the different synthetic options for the construction of phosphorus-carbon bonds, hydrophosphination of unsaturated carbon substrates has gained popularity in recent years.…”