213330-49-5Relevant academic research and scientific papers
Relationships between basicity, redox behaviour of ferrocenylamines and their reactivity with Pt[II] compounds
Duffy, Noel W.,Harper, Jacqui,Ramani,Ranatunge-Bandarage,Robinson, Brian H.,Simpson, Jim
, p. 125 - 131 (1998)
pKb values for the ferrocenylamines, [(η-C5H4(CH2)xNH2)FeC p] x=1, 2, 3; [(η-C5H4CH2NHR)FeCp] R=Me, 4, Ph, 5; {[η-C5H4CHR′NR2]FeCp} R′/R=H/Me, 6, R′/R=H/Ph, 7, Me/Me, 8;[{η-C5H4CHRNMe2)2Fe] R=H 9, Me 10; [{1,2η-C5H3(CH2NMe2)(PPh2)}FeCp] 11, {1,2η-C5H3[CH(Me)NMe2](PR2}}Fe[η-C5H4(PPh2)n] n=0, R=iPr 12, Ph 13, n=1, R=Me 14, are correlated with inductive, neighbouring group and steric effects. Corresponding salts have been synthesised. The pKb has a marked influence on their chemistry. Protonation competes with complexation but cis-PtCl2L2 L=1-3, 5, 7, and cis-Pt(N-N)Cl2 L=8, 9, have been characterised. Two reversible couples [Fc+A/FcA], [Fc+AH+/FcAH+] (A=amine function) and an irreversible oxidation/protonation of A are linked by a EECE mechanism, but potentials for the first two are independent of the amine and similar to ferrocene. Nucleophilic attack by ferrocenylamines at the nitrile, protonation and ligand substitution are all observed with cis-[PtCl2(NCR)2].
