Late transition metal complexes of a new P–N ligand Ph2PCH2N(H)C5H3(Cl-5)N: synthesis and structural studies

Abstract

N pyridyl complexes were characterised by a combination of multinuclear NMR, IR spectroscopy and elemental analyses. Furthermore the crystal structures of 5È7 and 12 have been determined and reveal several types of NÈHÉ É ÉX (X \ N, F or Cl ; inter-or intra-molecular) hydrogen bonding contacts. The structure of 12 represents an extremely rare, crystallographically characterised, MÈPÈCÈNÈCÈN six-membered metallacyle.

Supramolecular chemistry of half-sandwich organometallic building blocks based on RuCl2(p-cymene)Ph2PCH2Y

“…We have previously found that Mannich based condensation reactions are extremely facile for the syntheses of functionalised tertiary and ditertiary phosphines [29][30][31][32][33][34]. Carboxylic acid phosphines [32,34] can be prepared by this procedure and furthermore, we have shown some of these ligands serve as convenient building blocks for the preparation of linear, dinuclear gold(I) complexes [35] with unusual finite and infinite structures.…”

“…We are unaware of any systematic studies exploring the supramolecular chemistry of RuCl 2 (p-cymene)(PR 3 ) with phosphines from a similar ligand library. As part of ongoing studies in our group [29][30][31][32][33][34][35] we have used Mannich-based condensation reactions as an excellent procedure for synthesising highly functionalised tertiary and ditertiary phosphines. Herein we describe the use of isomeric, carboxylic acid or mixed phenol/carboxylic acid containing tertiary phosphines, Ph 2 PCH 2 Y, for the preparation of a range of RuCl 2 (p-cymene)(Ph 2 PCH 2 Y) complexes.…”

N,N′-Bis[(diphenylphosphinoyl)methyl]-1,4-phenylenediamine

“…1) occupies a special position of 1 site symmetry. In (I), the tertiary phosphine oxide has a distorted tetrahedral geometry with a P O bond length of 1.483 (3) Å , which is consistent with appreciable double-bond character (Coles et al, 2001).…”

Synthesis and Characterization of Cobalt(II) Complexes with Hemilabile P^N Donor Ligands

“…Some of them have rigid back bond and some other have flexible alkyl chain that join the two/three donor atoms. Moreover, few complexes of Fe, Au, Ag and W with diphenyl-2-pyridylphosphine and 4-(dimethylamino)phenyldiphenylphosphine ligands have also been reported [20][21][22][23]. Our interest in the present work is to extend the boundary-line of the phosphinoamine chemistry towards 1 st row transition metals and herein we report the synthesis of Co(II) complexes with 4-(dimethylamino)phenyldiphenylphosphine and diphenyl-2-pyridylphosphine ligands and characterization of these complexes.…”