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Donor-Site-Directed Rational Assembly of Heteroleptic cis-Pd L L' Coordination Cages from Picolyl Ligands

A donor-site engineering approach facilitates the formation of heteroleptic [Pd L L' ] cage structures through a favored cis-'in /out ' spatial configuration of the methyl groups of 5- and 3-substituted bis-monodentate picolyl ligands with flat acridone and bent phenothiazine backbones. The heterole... Full description

Journal Title: Chemistry (Weinheim an der Bergstrasse Germany), 03 September 2018, Vol.24(49), pp.12976-12982
Main Author: Zhu, Rongmei
Other Authors: Bloch, Witold M , Holstein, Julian J , Mandal, Soham , Schäfer, Lars V , Clever, Guido H
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: E-ISSN: 1521-3765 ; PMID: 29924444 Version:1 ; DOI: 10.1002/chem.201802188
Link: http://pubmed.gov/29924444
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title: Donor-Site-Directed Rational Assembly of Heteroleptic cis-Pd L L' Coordination Cages from Picolyl Ligands
format: Article
creator:
  • Zhu, Rongmei
  • Bloch, Witold M
  • Holstein, Julian J
  • Mandal, Soham
  • Schäfer, Lars V
  • Clever, Guido H
subjects:
  • Coordination Cages
  • Heteroleptic Assembly
  • Self-Sorting
  • Steric Control
  • Supramolecular Chemistry
ispartof: Chemistry (Weinheim an der Bergstrasse, Germany), 03 September 2018, Vol.24(49), pp.12976-12982
description: A donor-site engineering approach facilitates the formation of heteroleptic [Pd L L' ] cage structures through a favored cis-'in /out ' spatial configuration of the methyl groups of 5- and 3-substituted bis-monodentate picolyl ligands with flat acridone and bent phenothiazine backbones. The heteroleptic cages were confirmed by ESI-MS and 2D NMR experiments as well as DFT calculations, which pointed toward a cis-configuration being energetically favored. This was further supported by the synthesis and X-ray structure of a previously unreported cis-[Pd(2-picoline) ] complex. The formation of homoleptic structures, however, was met with considerable steric hindrance at the Pd centers, as observed by the formation of [Pd L (solvent) ] and [Pd L (solvent) ] species when only one type of acridone-based ligand was offered. In contrast, bent phenothiazine ligands with outside-pointing methyl groups showed the ability to form interpenetrated double-cages, as revealed by X-ray crystallography. The...
language: eng
source:
identifier: E-ISSN: 1521-3765 ; PMID: 29924444 Version:1 ; DOI: 10.1002/chem.201802188
fulltext: fulltext
issn:
  • 15213765
  • 1521-3765
url: Link


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titleDonor-Site-Directed Rational Assembly of Heteroleptic cis-Pd L L' Coordination Cages from Picolyl Ligands
creatorZhu, Rongmei ; Bloch, Witold M ; Holstein, Julian J ; Mandal, Soham ; Schäfer, Lars V ; Clever, Guido H
ispartofChemistry (Weinheim an der Bergstrasse, Germany), 03 September 2018, Vol.24(49), pp.12976-12982
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subjectCoordination Cages ; Heteroleptic Assembly ; Self-Sorting ; Steric Control ; Supramolecular Chemistry
descriptionA donor-site engineering approach facilitates the formation of heteroleptic [Pd L L' ] cage structures through a favored cis-'in /out ' spatial configuration of the methyl groups of 5- and 3-substituted bis-monodentate picolyl ligands with flat acridone and bent phenothiazine backbones. The heteroleptic cages were confirmed by ESI-MS and 2D NMR experiments as well as DFT calculations, which pointed toward a cis-configuration being energetically favored. This was further supported by the synthesis and X-ray structure of a previously unreported cis-[Pd(2-picoline) ] complex. The formation of homoleptic structures, however, was met with considerable steric hindrance at the Pd centers, as observed by the formation of [Pd L (solvent) ] and [Pd L (solvent) ] species when only one type of acridone-based ligand was offered. In contrast, bent phenothiazine ligands with outside-pointing methyl groups showed the ability to form interpenetrated double-cages, as revealed by X-ray crystallography. The...
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titleDonor-Site-Directed Rational Assembly of Heteroleptic cis-Pd L L' Coordination Cages from Picolyl Ligands
descriptionA donor-site engineering approach facilitates the formation of heteroleptic [Pd L L' ] cage structures through a favored cis-'in /out ' spatial configuration of the methyl groups of 5- and 3-substituted bis-monodentate picolyl ligands with flat acridone and bent phenothiazine backbones. The heteroleptic cages were confirmed by ESI-MS and 2D NMR experiments as well as DFT calculations, which pointed toward a cis-configuration being energetically favored. This was further supported by the synthesis and X-ray structure of a previously unreported cis-[Pd(2-picoline) ] complex. The formation of homoleptic structures, however, was met with considerable steric hindrance at the Pd centers, as observed by the formation of [Pd L (solvent) ] and [Pd L (solvent) ] species when only one type of acridone-based ligand was offered. In contrast, bent phenothiazine ligands with outside-pointing methyl groups showed the ability to form interpenetrated double-cages, as revealed by X-ray crystallography. The...
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abstractA donor-site engineering approach facilitates the formation of heteroleptic [Pd L L' ] cage structures through a favored cis-'in /out ' spatial configuration of the methyl groups of 5- and 3-substituted bis-monodentate picolyl ligands with flat acridone and bent phenothiazine backbones. The heteroleptic cages were confirmed by ESI-MS and 2D NMR experiments as well as DFT calculations, which pointed toward a cis-configuration being energetically favored. This was further supported by the synthesis and X-ray structure of a previously unreported cis-[Pd(2-picoline) ] complex. The formation of homoleptic structures, however, was met with considerable steric hindrance at the Pd centers, as observed by the formation of [Pd L (solvent) ] and [Pd L (solvent) ] species when only one type of acridone-based ligand was offered. In contrast, bent phenothiazine ligands with outside-pointing methyl groups showed the ability to form interpenetrated double-cages, as revealed by X-ray crystallography. The...
doi10.1002/chem.201802188
pmid29924444
orcididhttp://orcid.org/0000-0001-8458-3060
date2018-09-03