Synthesis and characterization of three geometric isomers of ruthenium II(2,2′-bipyridyl)(salicylaldehyde)2

Daron E. Janzen; Xiaoli Wang; Peter W. Carr; Kent R. Mann

doi:10.1016/j.ica.2004.03.026

Synthesis and characterization of three geometric isomers of ruthenium ^II(2,2^′-bipyridyl)(salicylaldehyde)₂

Daron E. Janzen, Xiaoli Wang, Peter W. Carr, Kent R. Mann

Chemistry (Twin Cities)

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

A new synthesis of Ru^II(bpy)(sal)₂ (1) (bpy=2,2 ^′-bipyridyl, sal=salicylaldehyde) has been developed and the separation and characterization of all three geometric isomers have been completed. The isomers are denoted 1a (phenolic oxygens trans), 1b, (aldehyde oxygens trans), and 1c (aldehyde oxygen trans to phenolic oxygen). All three isomers have been characterized by ¹H NMR, high resolution FAB-MS, UV-Vis, and cyclic voltammetry. Additionally, 1a has been characterized by solid-state UV-Vis and a single-crystal X-ray structural study. The solid-state packing of the Ru^II(bpy)(sal)₂ molecules in the structure of 1a displays intermolecular π-π interactions between bpy ligands of adjacent molecules. The bpy interactions form infinite π-stacks with alternating short stacking distances of 3.437 and 3.402 Å.

Original language	English (US)
Pages (from-to)	3317-3324
Number of pages	8
Journal	Inorganica Chimica Acta
Volume	357
Issue number	11
DOIs	https://doi.org/10.1016/j.ica.2004.03.026
State	Published - Aug 5 2004

Bibliographical note

Funding Information:
This work was supported in part by the MRSEC Program of the National Science Foundation under Award # DMR-0212302. D.E.J. acknowledges the University of Minnesota Department of Chemistry for financial support through a Block Grant Fellowship as well as the University of Minnesota Graduate School for support through a Doctoral Dissertation Research Grant. The authors acknowledge the X-ray Crystallographic Laboratory within the Department of Chemistry at the University of Minnesota.

Keywords

Crystal structure
Electrochemistry
Geometric isomers
H NMR
Intermolecular interactions
Ruthenium (II) complexes

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title = "Synthesis and characterization of three geometric isomers of ruthenium II(2,2′-bipyridyl)(salicylaldehyde)2",

abstract = "A new synthesis of RuII(bpy)(sal)2 (1) (bpy=2,2 ′-bipyridyl, sal=salicylaldehyde) has been developed and the separation and characterization of all three geometric isomers have been completed. The isomers are denoted 1a (phenolic oxygens trans), 1b, (aldehyde oxygens trans), and 1c (aldehyde oxygen trans to phenolic oxygen). All three isomers have been characterized by 1H NMR, high resolution FAB-MS, UV-Vis, and cyclic voltammetry. Additionally, 1a has been characterized by solid-state UV-Vis and a single-crystal X-ray structural study. The solid-state packing of the RuII(bpy)(sal)2 molecules in the structure of 1a displays intermolecular π-π interactions between bpy ligands of adjacent molecules. The bpy interactions form infinite π-stacks with alternating short stacking distances of 3.437 and 3.402 {\AA}.",

keywords = "Crystal structure, Electrochemistry, Geometric isomers, H NMR, Intermolecular interactions, Ruthenium (II) complexes",

author = "Janzen, {Daron E.} and Xiaoli Wang and Carr, {Peter W.} and Mann, {Kent R.}",

note = "Funding Information: This work was supported in part by the MRSEC Program of the National Science Foundation under Award # DMR-0212302. D.E.J. acknowledges the University of Minnesota Department of Chemistry for financial support through a Block Grant Fellowship as well as the University of Minnesota Graduate School for support through a Doctoral Dissertation Research Grant. The authors acknowledge the X-ray Crystallographic Laboratory within the Department of Chemistry at the University of Minnesota.",

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AU - Wang, Xiaoli

AU - Carr, Peter W.

AU - Mann, Kent R.

N1 - Funding Information: This work was supported in part by the MRSEC Program of the National Science Foundation under Award # DMR-0212302. D.E.J. acknowledges the University of Minnesota Department of Chemistry for financial support through a Block Grant Fellowship as well as the University of Minnesota Graduate School for support through a Doctoral Dissertation Research Grant. The authors acknowledge the X-ray Crystallographic Laboratory within the Department of Chemistry at the University of Minnesota.

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N2 - A new synthesis of RuII(bpy)(sal)2 (1) (bpy=2,2 ′-bipyridyl, sal=salicylaldehyde) has been developed and the separation and characterization of all three geometric isomers have been completed. The isomers are denoted 1a (phenolic oxygens trans), 1b, (aldehyde oxygens trans), and 1c (aldehyde oxygen trans to phenolic oxygen). All three isomers have been characterized by 1H NMR, high resolution FAB-MS, UV-Vis, and cyclic voltammetry. Additionally, 1a has been characterized by solid-state UV-Vis and a single-crystal X-ray structural study. The solid-state packing of the RuII(bpy)(sal)2 molecules in the structure of 1a displays intermolecular π-π interactions between bpy ligands of adjacent molecules. The bpy interactions form infinite π-stacks with alternating short stacking distances of 3.437 and 3.402 Å.

AB - A new synthesis of RuII(bpy)(sal)2 (1) (bpy=2,2 ′-bipyridyl, sal=salicylaldehyde) has been developed and the separation and characterization of all three geometric isomers have been completed. The isomers are denoted 1a (phenolic oxygens trans), 1b, (aldehyde oxygens trans), and 1c (aldehyde oxygen trans to phenolic oxygen). All three isomers have been characterized by 1H NMR, high resolution FAB-MS, UV-Vis, and cyclic voltammetry. Additionally, 1a has been characterized by solid-state UV-Vis and a single-crystal X-ray structural study. The solid-state packing of the RuII(bpy)(sal)2 molecules in the structure of 1a displays intermolecular π-π interactions between bpy ligands of adjacent molecules. The bpy interactions form infinite π-stacks with alternating short stacking distances of 3.437 and 3.402 Å.

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KW - Electrochemistry

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KW - H NMR

KW - Intermolecular interactions

KW - Ruthenium (II) complexes

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