Synthesis and characterization of organoimido- and organoamido-rhenium(V) complexes. Crystal structures of [ReCl2(NC6H4PPh2-2)(HNC6H4PPh2-2)], [Re(8-HNC9H6N)2O(PPh3)][BPh4] and [Re(NPh)(NC5H3S-2-SiMe3-3)2(PPh3)][BPh4]

Abstract

Synthesis and Characterization of Organoimido-andOrganoamido-rhenium(v) Complexes.

Nitrosyltechnetium(I) Complexes with 2‐(Diphenylphosphanyl)aniline

“…Aminophosphines are versatile ligands, combining hard and soft donor atoms, which enables them to stabilize transition metals in different oxidation states. Complexes with a variety of transition metals are reported …”

“…The related coordination chemistry of technetium and rhenium was mainly directed to complexes with high oxidation states of these elements . Reactions starting from pertechnetate, perrhenate, or other common starting materials such as [ M OCl 4 ] – complexes or [ReOCl 3 (PPh 3 ) 2 ] gave a variety of neutral or cationic products with the single‐deprotonated aminophosphine , .…”

“…Reactions starting from pertechnetate, perrhenate, or other common starting materials such as [ M OCl 4 ] – complexes or [ReOCl 3 (PPh 3 ) 2 ] gave a variety of neutral or cationic products with the single‐deprotonated aminophosphine , . But also the formation of imido species has been observed as the results of a double deprotonation of H 2 L1,, while during reactions of oxorhenium(V) precursors with (2‐aminomethylphenyl)diphenylphosphine (H 2 L2) no deprotonation of the aminophosphine was observed. The coordination chemistry of H 2 L3 is hitherto restricted to some rhenium and ruthenium complexes .…”

A rhenium(V) complex containing a terdentate chelate with an imido donor atom: synthesis and structure of [Re(aps)I(PPh3)2]I (H3aps = N-(2-aminophenyl)-salicylideneimine)

“…Another example is [Re(dpa)Cl 2 (Hdpa)], prepared from trans-[ReOCl 3 (PPh 3 ) 2 ] and 2-diphenylphosphinoaniline (H 2 dpa), and which contains the N,P-chelated imido ligand dpa [22]. Complex 1 represents the first example of a rhenium(V) complex containing a terdentate chelate with an imido nitrogen as one of the donor atoms.…”

fac-Trichloro(quinolin-8-ylimido-N,N′)(triphenylphosphine-P)rhenium(V)

“…On the other hand, Re complexes with the polydentate arylimido ligand are still rare. For example, complexes with 8-imidoquinoline (imq) have not been obtained, but the complex with 8-amidoquinoline, [ReO(Himq) 2 (PPh 3 )]BPh 4 , was formed by the reaction of [ReOCl 3 (PPh 3 ) 2 ] with 8-aminoquinoline (H 2 imq) (Ahmet et al, 1995). In this work, we report the structure of the Re complex with imq, [Re(imq)Cl 3 (PPh 3 )], (I).…”