137038-87-0Relevant academic research and scientific papers
Synthesis, structure and reactivity of an (η6-naphthalene)iron(0) complex having a 1,2-bis(dicyclohexylphosphino)ethane ligand
Kubo, Hiroaki,Hirano, Masafumi,Komiya, Sanshiro
, p. 89 - 95 (2007/10/03)
A zerovalent iron complex having an η6-naphthalene ligand, Fe(η6-C10H8)(dcype) (3) [dcype=1,2-bis(dicyclohexylphosphino)ethane] has been prepared by the reduction of high spin 14 electron dichloroiron(II) complex, FeCl2(dcype) (1) with sodium-naphthalene. In refluxing benzene solution of 3, the coordinated naphthalene can be replaced by benzene giving Fe(η6-C6H6)(dcype) (4). Exposure of 3 to CO results in the formation of Fe(CO)3(dcype) (5). Protonation of 3 with HBF4 yields cationic complex, [FeH(η6-C10H8)(dcype)][BF4] (6), which can be deprotonated by lithium diisopropylamide.
Enthalpies of reaction of (diene)- and (enone)iron tricarbonyl complexes with monodentate and bidentate ligands. Solution thermochemical study of ligand substitution in the L2Fe(CO)3 complexes
Luo, Lubin,Nolan, Steven P.
, p. 2410 - 2415 (2008/10/08)
The enthalpies of reaction of (BDA)Fe(CO)3 (BDA = (C6H5)CH=CHO(CH3), benzylideneacetone) with a series of mono- and multidentate ligands, leading to the formation of (η4-L)Fe(CO)3, (L′)2Fe(CO)3, and (L″)Fe(CO)3 complexes (L = diene, enone; L′ = monodentate arsines; L″ = bidentate ligands), have been measured by solution calorimetry in THF at 50°C. The range of reaction enthalpies spans some 44 kcal/mol. The overall relative order of stability established is as follows: for monodetate ligands, AsPh3 3 a relative order of complex stability for these compounds in the iron tricarbonyl system. These data allow the calculation of the enthalpy associated with the geometric isomerization process (axial-equatorial/ diaxial) present in the (L′)2Fe(CO)3 system (5.4 ± 0.5 kcal/mol) as well as for a quantitative analysis of ring strain energies in the (L″)Fe(CO)3 system. The four-membered metallacycle is the only cyclic structure exhibiting significant strain energy (12.6 kcal/mol). Comparisons with other organometallic systems and insight into factors influencing the Fe-L bond disruption enthalpies are also discussed.
Calorimetric studies of the heats of protonation of the metal in Fe(CO)3(bidentate phosphine, arsine) complexes: Effects of chelate ligands on metal basicity
Sowa Jr., John R.,Zanotti, Valerio,Facchin, Giacomo,Angelici, Robert J.
, p. 160 - 165 (2007/10/02)
Titration calorimetry has been used to determine the beats of protonation (ΔHHM) of Fe(CO)3(LL) complexes (LL = dppm, dppe, dppp, dppb, dppbz, cis-dppv, arphos, dmpm, dcpe, and diars) with CF3SO3H in 1,2-dichlor
