A series of heteroleptic complexes of the type fac-[MnIIIL2]- [H2L=derivatives of N-(2-hydroxybenzyl)glycine or N-(5-nitro-2-hydroxybenzyl)sarcosine] possessing unusual Mn(III) co-ordination spheres

Musa S. Shongwe, Masahiro Mikuriya, Ryoji Nukada, Eric W. Ainscough, Andrew M. Brodie, Joyce M. Waters

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The mononuclear manganese(III) complexes [C5H10NH2][MnL2] [L2-=a substituted N-(2-hydroxybenzyl)glycinate (hbg2-) viz. 3,5-dibromo- (3,5-Br-hbg2-), 3,5-dichloro- (3,5-Cl-hbg2-), 3-methyl-5-chloro- (3,5-Me,Cl-hbg2-), 5-bromo- (5-Br-hbg2-), 5-chloro- (5-Cl-hbg2-), 5-nitro- (5-NO2-hbg2-) or N-(5-nitro-2-hydroxybenzyl)sarcosine (5-NO2-hbs2-)] have been synthesised by reaction of the appropriate ligand with manganese(II) perchlorate under ambient conditions in a 2:1 molar ratio using piperidine as base. The structures of three of these complexes, [C5H10NH2][Mn(3,5-Cl-hbg)2] (2), [C5H10NH2][Mn(5-NO2-hbg) 2] (6) and [C5H10NH2][Mn(5-NO2-hbs) 2] (7) have been elucidated by single-crystal X-ray crystallography and each displays two similar, independent [MnL2]- ions in the asymmetric unit linked via piperidinium cations through hydrogen bonding. The ligands co-ordinate in a facial tridentate fashion with the three donor atoms being the phenolate and carboxylate oxygens and the amine nitrogen. The geometry at the Mn centres is compressed rhombic octahedral consistent with a pseudo-Jahn-Teller compression along the Mn-O(phenolate) axis. Mean bond lengths are in the ranges 1.886-1.889 Å for the Mn-O(phenolate), 2.062-2.125 Å for the Mn-O(carboxylate) and 2.091-2.184 Å for the Mn-N(amine) distances. The magnetic susceptibility and electronic and IR spectroscopic data are discussed with reference to the crystal structures.

Original languageEnglish
Pages (from-to)228-236
Number of pages9
JournalInorganica Chimica Acta
Volume290
Issue number2
Publication statusPublished - Jul 15 1999

Fingerprint

Sarcosine
Manganese
glycine
carboxylates
Amines
manganese
Amino acids
amines
Ligands
Derivatives
ligands
piperidine
X ray crystallography
X Ray Crystallography
Bond length
Hydrogen Bonding
perchlorates
Magnetic susceptibility
crystallography
Cations

Keywords

  • Crystal structures
  • Glycine derivative complexes
  • Manganese complexes
  • Sarcosine derivative complexes

ASJC Scopus subject areas

  • Biochemistry
  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

A series of heteroleptic complexes of the type fac-[MnIIIL2]- [H2L=derivatives of N-(2-hydroxybenzyl)glycine or N-(5-nitro-2-hydroxybenzyl)sarcosine] possessing unusual Mn(III) co-ordination spheres. / Shongwe, Musa S.; Mikuriya, Masahiro; Nukada, Ryoji; Ainscough, Eric W.; Brodie, Andrew M.; Waters, Joyce M.

In: Inorganica Chimica Acta, Vol. 290, No. 2, 15.07.1999, p. 228-236.

Research output: Contribution to journalArticle

@article{45b15193de9043fd9b54d904ae150ac4,
title = "A series of heteroleptic complexes of the type fac-[MnIIIL2]- [H2L=derivatives of N-(2-hydroxybenzyl)glycine or N-(5-nitro-2-hydroxybenzyl)sarcosine] possessing unusual Mn(III) co-ordination spheres",
abstract = "The mononuclear manganese(III) complexes [C5H10NH2][MnL2] [L2-=a substituted N-(2-hydroxybenzyl)glycinate (hbg2-) viz. 3,5-dibromo- (3,5-Br-hbg2-), 3,5-dichloro- (3,5-Cl-hbg2-), 3-methyl-5-chloro- (3,5-Me,Cl-hbg2-), 5-bromo- (5-Br-hbg2-), 5-chloro- (5-Cl-hbg2-), 5-nitro- (5-NO2-hbg2-) or N-(5-nitro-2-hydroxybenzyl)sarcosine (5-NO2-hbs2-)] have been synthesised by reaction of the appropriate ligand with manganese(II) perchlorate under ambient conditions in a 2:1 molar ratio using piperidine as base. The structures of three of these complexes, [C5H10NH2][Mn(3,5-Cl-hbg)2] (2), [C5H10NH2][Mn(5-NO2-hbg) 2] (6) and [C5H10NH2][Mn(5-NO2-hbs) 2] (7) have been elucidated by single-crystal X-ray crystallography and each displays two similar, independent [MnL2]- ions in the asymmetric unit linked via piperidinium cations through hydrogen bonding. The ligands co-ordinate in a facial tridentate fashion with the three donor atoms being the phenolate and carboxylate oxygens and the amine nitrogen. The geometry at the Mn centres is compressed rhombic octahedral consistent with a pseudo-Jahn-Teller compression along the Mn-O(phenolate) axis. Mean bond lengths are in the ranges 1.886-1.889 {\AA} for the Mn-O(phenolate), 2.062-2.125 {\AA} for the Mn-O(carboxylate) and 2.091-2.184 {\AA} for the Mn-N(amine) distances. The magnetic susceptibility and electronic and IR spectroscopic data are discussed with reference to the crystal structures.",
keywords = "Crystal structures, Glycine derivative complexes, Manganese complexes, Sarcosine derivative complexes",
author = "Shongwe, {Musa S.} and Masahiro Mikuriya and Ryoji Nukada and Ainscough, {Eric W.} and Brodie, {Andrew M.} and Waters, {Joyce M.}",
year = "1999",
month = "7",
day = "15",
language = "English",
volume = "290",
pages = "228--236",
journal = "Inorganica Chimica Acta",
issn = "0020-1693",
publisher = "Elsevier BV",
number = "2",

}

TY - JOUR

T1 - A series of heteroleptic complexes of the type fac-[MnIIIL2]- [H2L=derivatives of N-(2-hydroxybenzyl)glycine or N-(5-nitro-2-hydroxybenzyl)sarcosine] possessing unusual Mn(III) co-ordination spheres

AU - Shongwe, Musa S.

AU - Mikuriya, Masahiro

AU - Nukada, Ryoji

AU - Ainscough, Eric W.

AU - Brodie, Andrew M.

AU - Waters, Joyce M.

PY - 1999/7/15

Y1 - 1999/7/15

N2 - The mononuclear manganese(III) complexes [C5H10NH2][MnL2] [L2-=a substituted N-(2-hydroxybenzyl)glycinate (hbg2-) viz. 3,5-dibromo- (3,5-Br-hbg2-), 3,5-dichloro- (3,5-Cl-hbg2-), 3-methyl-5-chloro- (3,5-Me,Cl-hbg2-), 5-bromo- (5-Br-hbg2-), 5-chloro- (5-Cl-hbg2-), 5-nitro- (5-NO2-hbg2-) or N-(5-nitro-2-hydroxybenzyl)sarcosine (5-NO2-hbs2-)] have been synthesised by reaction of the appropriate ligand with manganese(II) perchlorate under ambient conditions in a 2:1 molar ratio using piperidine as base. The structures of three of these complexes, [C5H10NH2][Mn(3,5-Cl-hbg)2] (2), [C5H10NH2][Mn(5-NO2-hbg) 2] (6) and [C5H10NH2][Mn(5-NO2-hbs) 2] (7) have been elucidated by single-crystal X-ray crystallography and each displays two similar, independent [MnL2]- ions in the asymmetric unit linked via piperidinium cations through hydrogen bonding. The ligands co-ordinate in a facial tridentate fashion with the three donor atoms being the phenolate and carboxylate oxygens and the amine nitrogen. The geometry at the Mn centres is compressed rhombic octahedral consistent with a pseudo-Jahn-Teller compression along the Mn-O(phenolate) axis. Mean bond lengths are in the ranges 1.886-1.889 Å for the Mn-O(phenolate), 2.062-2.125 Å for the Mn-O(carboxylate) and 2.091-2.184 Å for the Mn-N(amine) distances. The magnetic susceptibility and electronic and IR spectroscopic data are discussed with reference to the crystal structures.

AB - The mononuclear manganese(III) complexes [C5H10NH2][MnL2] [L2-=a substituted N-(2-hydroxybenzyl)glycinate (hbg2-) viz. 3,5-dibromo- (3,5-Br-hbg2-), 3,5-dichloro- (3,5-Cl-hbg2-), 3-methyl-5-chloro- (3,5-Me,Cl-hbg2-), 5-bromo- (5-Br-hbg2-), 5-chloro- (5-Cl-hbg2-), 5-nitro- (5-NO2-hbg2-) or N-(5-nitro-2-hydroxybenzyl)sarcosine (5-NO2-hbs2-)] have been synthesised by reaction of the appropriate ligand with manganese(II) perchlorate under ambient conditions in a 2:1 molar ratio using piperidine as base. The structures of three of these complexes, [C5H10NH2][Mn(3,5-Cl-hbg)2] (2), [C5H10NH2][Mn(5-NO2-hbg) 2] (6) and [C5H10NH2][Mn(5-NO2-hbs) 2] (7) have been elucidated by single-crystal X-ray crystallography and each displays two similar, independent [MnL2]- ions in the asymmetric unit linked via piperidinium cations through hydrogen bonding. The ligands co-ordinate in a facial tridentate fashion with the three donor atoms being the phenolate and carboxylate oxygens and the amine nitrogen. The geometry at the Mn centres is compressed rhombic octahedral consistent with a pseudo-Jahn-Teller compression along the Mn-O(phenolate) axis. Mean bond lengths are in the ranges 1.886-1.889 Å for the Mn-O(phenolate), 2.062-2.125 Å for the Mn-O(carboxylate) and 2.091-2.184 Å for the Mn-N(amine) distances. The magnetic susceptibility and electronic and IR spectroscopic data are discussed with reference to the crystal structures.

KW - Crystal structures

KW - Glycine derivative complexes

KW - Manganese complexes

KW - Sarcosine derivative complexes

UR - http://www.scopus.com/inward/record.url?scp=0000797384&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000797384&partnerID=8YFLogxK

M3 - Article

VL - 290

SP - 228

EP - 236

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

SN - 0020-1693

IS - 2

ER -