Stereoselective coordination chemistry of the tetradentate chelating ligand (2R,3R)-bis(2,2 '-dipyridyl-5-methoxyl) butane

R. Prabaharan, Nicholas Fletcher

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The enantiomerically pure ligand L-3RR (2R, 3R)-bis(2,2'-dipyridyl-5-methoxyl) butane has been synthesised by linking two 2,2'-bipyridine units with (2R, 3R)-butandiol. The reaction of L-3RR with Zn(II) afforded a mononuclear species and the H-1 NMR spectroscopy points to a C-1 symmetry, expected for a distorted trigonal bipyramidal coordination environment. These observations were confirmed by MM2 calculations and electrospray mass spectrometry. The reaction of L-3RR with iron(II) indicated the formation of a dinuclear species by mass spectrometry. Solution state CD spectroscopy indicates that both complexes adopt a Lambda-configuration, implying a single stranded dinuclear iron(II) complex is present rather than the anticipated triple helical architecture.
Original languageEnglish
Pages (from-to)2558-2563
Number of pages6
JournalDalton Transactions
Volume*
Issue number12
DOIs
Publication statusPublished - 21 May 2003

Fingerprint

2,2'-Dipyridyl
Chelation
Mass spectrometry
Iron
Ligands
Nuclear magnetic resonance spectroscopy
Spectroscopy
butane

Cite this

@article{f5b0b912d1264d93bcb0c764bf446754,
title = "Stereoselective coordination chemistry of the tetradentate chelating ligand (2R,3R)-bis(2,2 '-dipyridyl-5-methoxyl) butane",
abstract = "The enantiomerically pure ligand L-3RR (2R, 3R)-bis(2,2'-dipyridyl-5-methoxyl) butane has been synthesised by linking two 2,2'-bipyridine units with (2R, 3R)-butandiol. The reaction of L-3RR with Zn(II) afforded a mononuclear species and the H-1 NMR spectroscopy points to a C-1 symmetry, expected for a distorted trigonal bipyramidal coordination environment. These observations were confirmed by MM2 calculations and electrospray mass spectrometry. The reaction of L-3RR with iron(II) indicated the formation of a dinuclear species by mass spectrometry. Solution state CD spectroscopy indicates that both complexes adopt a Lambda-configuration, implying a single stranded dinuclear iron(II) complex is present rather than the anticipated triple helical architecture.",
author = "R. Prabaharan and Nicholas Fletcher",
year = "2003",
month = "5",
day = "21",
doi = "10.1039/b303803c",
language = "English",
volume = "*",
pages = "2558--2563",
journal = "Dalton transactions (Cambridge, England : 2003)",
issn = "1477-9226",
publisher = "The Royal Society of Chemistry",
number = "12",

}

Stereoselective coordination chemistry of the tetradentate chelating ligand (2R,3R)-bis(2,2 '-dipyridyl-5-methoxyl) butane. / Prabaharan, R.; Fletcher, Nicholas.

In: Dalton Transactions, Vol. *, No. 12, 21.05.2003, p. 2558-2563.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Stereoselective coordination chemistry of the tetradentate chelating ligand (2R,3R)-bis(2,2 '-dipyridyl-5-methoxyl) butane

AU - Prabaharan, R.

AU - Fletcher, Nicholas

PY - 2003/5/21

Y1 - 2003/5/21

N2 - The enantiomerically pure ligand L-3RR (2R, 3R)-bis(2,2'-dipyridyl-5-methoxyl) butane has been synthesised by linking two 2,2'-bipyridine units with (2R, 3R)-butandiol. The reaction of L-3RR with Zn(II) afforded a mononuclear species and the H-1 NMR spectroscopy points to a C-1 symmetry, expected for a distorted trigonal bipyramidal coordination environment. These observations were confirmed by MM2 calculations and electrospray mass spectrometry. The reaction of L-3RR with iron(II) indicated the formation of a dinuclear species by mass spectrometry. Solution state CD spectroscopy indicates that both complexes adopt a Lambda-configuration, implying a single stranded dinuclear iron(II) complex is present rather than the anticipated triple helical architecture.

AB - The enantiomerically pure ligand L-3RR (2R, 3R)-bis(2,2'-dipyridyl-5-methoxyl) butane has been synthesised by linking two 2,2'-bipyridine units with (2R, 3R)-butandiol. The reaction of L-3RR with Zn(II) afforded a mononuclear species and the H-1 NMR spectroscopy points to a C-1 symmetry, expected for a distorted trigonal bipyramidal coordination environment. These observations were confirmed by MM2 calculations and electrospray mass spectrometry. The reaction of L-3RR with iron(II) indicated the formation of a dinuclear species by mass spectrometry. Solution state CD spectroscopy indicates that both complexes adopt a Lambda-configuration, implying a single stranded dinuclear iron(II) complex is present rather than the anticipated triple helical architecture.

UR - http://www.scopus.com/inward/record.url?scp=2942713707&partnerID=8YFLogxK

U2 - 10.1039/b303803c

DO - 10.1039/b303803c

M3 - Article

VL - *

SP - 2558

EP - 2563

JO - Dalton transactions (Cambridge, England : 2003)

JF - Dalton transactions (Cambridge, England : 2003)

SN - 1477-9226

IS - 12

ER -