The synthesis and characterisation of bis(diisopropylphosphoryl)ferrocene Fe[(η5-C5H4)P(O) Pr2]2, bis(diisopropylthiophosphoryl)ferrocene Fe[(η5-C5H4)P(S) Pr2]2, and bis(diisopropylselenophosphoryl)ferrocene Fe[(η5-C5H4)P(Se) Pr2]2, the oxidised derivatives of bis(diisopropylphosphino)ferrocene

Late Transition Metal Compounds with 1,1′‐Bis(phosphino)ferrocene Ligands

“…The structural parameters are similar, although the O–Zn–O bite angle in [Zn( 3 O 2 )Cl 2 ] is significantly wider than that of the related 2 O 2 compound. The average P–O bond length in 2 O 2 has been reported previously (1.494 Å), and the P–O bond lengthens slightly upon coordination to the zinc atom. A much smaller change is observed for 1 O 2 (P–O 1.493 Å) upon coordination to give [Zn( 1 O 2 )Cl 2 ] (P–O 1.494 Å) .…”

“…[22] The %V bur defines the percentage of the volume of a sphere surrounding a metal atom that is occupied by a ligand and is calculated with the recently updated SambVca 2 suite. [23] τ [e] 55.67 (7) 48.51 (14) [f ] [27] The structures of [Zn(2O 2 )Cl 2 ] and [Zn(3O 2 )Cl 2 ] were determined (Figure 3), and selected structural parameters are presented in Table 2. The structural parameters are similar, although the O-Zn-O bite angle in [Zn(3O 2 )Cl 2 ] is significantly wider than that of the related 2O 2 compound.…”

“…Two phosphine oxide compounds were prepared; [Zn( 2 O 2 )Cl 2 ] was prepared by the reaction of 2 O 2 with ZnCl 2 , and [Zn( 3 O 2 )Cl 2 ] was prepared by the reaction of 3 with ZnCl 2 in air. Similarly to the coordination of 1,1′‐bis(phosphino)ferrocene ligands, the coordination of the 1,1′‐bis(phosphine oxide)ferrocene ligands to zinc causes a relatively small change in the chemical shifts in the 31 P NMR spectra; the signal for [Zn( 2 O 2 )Cl 2 ] is 6.3 ppm downfield of the signal for 2 O 2 ( δ = 55.3 ppm) …”

Transition-metal complexes of group 12 with 1,1′-bis(phosphanyl)ferrocene ligands

“…The main reason for the popularity of these ligands is the relative ease of altering the steric and electronic properties of the ligand by changing the substituents on the P-donor atoms. Among the wide variety of ferrocene derivatives, ferrocene diphosphines functionalized with chalcogen donors, such as oxygen, sulfur and selenium, with different -acceptor strengths, form a variety of metal complexes due to their different bonding abilities (Dutta & Deb, 2011;Bishop et al, 1971;Pilloni et al, 1993Pilloni et al, , 1995Pilloni et al, , 1997Pilloni et al, , 1998Cauzzi et al, 1997Cauzzi et al, , 1999Necas et al, 2001;Gimeno et al, 1995;Š tě pnička et al, 2011;Fang et al, 1995;Yeo et al, 1999;Zhang & Hor, 2011;Swartz & Nataro, 2005;Blanco et al, 2006;Kahn et al, 2009;Aguado et al, 2005;Henderson & Alley, 2002;Gimeno & Laguna, 1999). Oxygen being a 'hard' donor is capable of stabilizing metal ions in higher oxidation states due to the absence of d back bonding.…”

High-Pressure Study of Metallocenes, M(η5-C5H5)2(M = Fe, Co)

“…Metallocenes are widely used in technologies [1], for instance, ferrocene, is used as an additive for petroleum products [2]. Also a host of organic compounds for various applications are derivatives of the metallocenes [3][4].…”