Related Experiment Video
Updated: Jun 21, 2026

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
Heteroleptic arene ruthenium complexes based on meso-substituted dipyrrins: synthesis, structure, reactivity, and
Mahendra Yadav1, Ashish Kumar Singh, Biswajit Maiti
1Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi - 221 005 (U.P.), India.
Abstract:
First examples of heteroleptic arene ruthenium complexes containing dipyrrin ligands with the general formulations [(eta(6)-arene)RuCl(L)] [(arene = C(6)H(6), C(10)H(14); L = 5-(4-cyanophenyl)-dipyrromethene, cydpm; 5-(4-nitrophenyl)-dipyrromethene, ndpm and 5-(4-benzyloxyphenyl)-dipyrromethene, bdpm] have been synthesized. The complexes [(eta(6)-C(10)H(14))RuCl(L)] (L = ndpm and cydpm) reacted with NaN(3) and NH(4)SCN to afford neutral mononuclear complexes [(eta(6)-C(10)H(14))Ru(N(3))(L)] and [(eta(6)-C(10)H(14))Ru(SCN)(L)]. Their reactions with EPh(3) (E = P, As) and exobidentate ditopic P-P and N-N donor ligands, namely, bis-(diphenylphosphino)methane (dppm) and 4,4'-bipyridine (bpy) in the presence of AgSO(3)CF(3) afforded cationic mono- and binuclear complexes [(eta(6)-C(10)H(14))Ru(L)(EPh(3))]SO(3)CF(3), [{(eta(6)-C(10)H(14))Ru(L)}(2)(mu-dppm)](SO(3)CF(3))(2), and [{(eta(6)-C(10)H(14))Ru(L)}(2)(mu-bpy)](SO(3)CF(3))(2), respectively. The reaction products have been characterized by analytical and spectral studies. Molecular structures of the representative complexes [(eta(6)-C(10)H(14))RuCl(cydpm)], [(eta(6)-C(6)H(6))RuCl(cydpm)], [(eta(6)-C(10)H(14))RuCl(ndpm)], [(eta(6)-C(10)H(14))Ru(N(3))(ndpm)], and [(eta(6)-C(10)H(14))Ru(PPh(3))(ndpm)]SO(3)CF(3) have been determined crystallographically. Redox behavior of the complexes has been investigated by electrochemical studies. Emission spectral studies at room temperature suggested that the complexes under study are non-emissive.
More Related Videos
12:19Photogeneration of N-Heterocyclic Carbenes: Application in Photoinduced Ring-Opening Metathesis Polymerization
Published on: November 29, 2018
10:52Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex
Published on: July 27, 2022
Related Concept Videos
Thermal and Photochemical Electrocyclic Reactions: Overview
Thermal Electrocyclic Reactions: Stereochemistry
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
Diels–Alder Reaction Forming Cyclic Products: Stereochemistry
Diels–Alder Reaction: Characteristics of Dienes
Characteristics of the diene
Conformation
The simplest example of a diene is 1,3-butadiene, an acyclic conjugated π system. At room temperature, the molecule exists as a mixture of s-cis and s-trans conformers by virtue of rotation around the carbon–carbon single bond. Although the s-trans isomer is more stable, the...
Photochemical Electrocyclic Reactions: Stereochemistry
Selection Rules: Photochemical Activation
Diels–Alder Reaction Forming Bridged Bicyclic Products: Stereochemistry