First hydrogelation of discrete metal complexes. Structures and fluxional behavior of cyclopalladium(II) complexes

Young Mee Na; Tae Hwan Noh; Byung Jo Ha; Jongki Hong; Ok Sang Jung

doi:10.5012/bkcs.2009.30.3.573

First hydrogelation of discrete metal complexes. Structures and fluxional behavior of cyclopalladium(II) complexes

Young Mee Na
, Tae Hwan Noh
, Byung Jo Ha
, Jongki Hong
, Ok Sang Jung^*

^*Corresponding author for this work

Chemistry Education

Pusan National University
Eulji University
Kyung Hee University

Research output: Contribution to journal › Journal article › peer-review

6 Scopus citations

Abstract

The reaction of (en)Pd(NO₃)₂ (en = ethylenediamine) with 1,4-bis(dimethyl-4-pyridylsilyl)benzene (L) affords cyclodimer, [(en)Pd(L)]₂(NO₃)₄, whereas the reaction of (tmeda)Pd(NO₃)₂ (tmeda = N, N, N', N'-tetramethyl-ethylenediamine) with L gives cyclotrimer, [(tmeda)Pd(L)]₃(NO₃)₆. Both complexes exist as catenane in water. The catenated cyclodimer is rigid whereas the catenatoed cyclotrimer is dynamic in water. The catenoated cyclotrimers afford hydrogelo containing 98.5% water below 2 °C. The hydrogel changes to its sol around 3 °C, and to its clear solution at 7 °C. Such a notable difference between [(en)Pd(L)]₂(NO₃)₄ and [(tmeda)Pd(L)]₃(NO₃)₆ might be explained by their different dynamic behavior via ring size effects.

Original language	English
Pages (from-to)	573-576
Number of pages	4
Journal	Bulletin of the Korean Chemical Society
Volume	30
Issue number	3
DOIs	https://doi.org/10.5012/bkcs.2009.30.3.573
State	Published - 2009.03

Keywords

Catenane
Hydrogelation
Metallacycles
Palladium
Si ligands

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10.5012/bkcs.2009.30.3.573

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@article{f1538f19565a48c29e451286f14abef4,

title = "First hydrogelation of discrete metal complexes. Structures and fluxional behavior of cyclopalladium(II) complexes",

abstract = "The reaction of (en)Pd(NO3)2 (en = ethylenediamine) with 1,4-bis(dimethyl-4-pyridylsilyl)benzene (L) affords cyclodimer, [(en)Pd(L)]2(NO3)4, whereas the reaction of (tmeda)Pd(NO3)2 (tmeda = N, N, N', N'-tetramethyl-ethylenediamine) with L gives cyclotrimer, [(tmeda)Pd(L)]3(NO3)6. Both complexes exist as catenane in water. The catenated cyclodimer is rigid whereas the catenatoed cyclotrimer is dynamic in water. The catenoated cyclotrimers afford hydrogelo containing 98.5\% water below 2 °C. The hydrogel changes to its sol around 3 °C, and to its clear solution at 7 °C. Such a notable difference between [(en)Pd(L)]2(NO3)4 and [(tmeda)Pd(L)]3(NO3)6 might be explained by their different dynamic behavior via ring size effects.",

keywords = "Catenane, Hydrogelation, Metallacycles, Palladium, Si ligands",

author = "Na, \{Young Mee\} and Noh, \{Tae Hwan\} and Ha, \{Byung Jo\} and Jongki Hong and Jung, \{Ok Sang\}",

year = "2009",

month = mar,

doi = "10.5012/bkcs.2009.30.3.573",

language = "English",

volume = "30",

pages = "573--576",

journal = "Bulletin of the Korean Chemical Society",

issn = "0253-2964",

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TY - JOUR

T1 - First hydrogelation of discrete metal complexes. Structures and fluxional behavior of cyclopalladium(II) complexes

AU - Na, Young Mee

AU - Noh, Tae Hwan

AU - Ha, Byung Jo

AU - Hong, Jongki

AU - Jung, Ok Sang

PY - 2009/3

Y1 - 2009/3

N2 - The reaction of (en)Pd(NO3)2 (en = ethylenediamine) with 1,4-bis(dimethyl-4-pyridylsilyl)benzene (L) affords cyclodimer, [(en)Pd(L)]2(NO3)4, whereas the reaction of (tmeda)Pd(NO3)2 (tmeda = N, N, N', N'-tetramethyl-ethylenediamine) with L gives cyclotrimer, [(tmeda)Pd(L)]3(NO3)6. Both complexes exist as catenane in water. The catenated cyclodimer is rigid whereas the catenatoed cyclotrimer is dynamic in water. The catenoated cyclotrimers afford hydrogelo containing 98.5% water below 2 °C. The hydrogel changes to its sol around 3 °C, and to its clear solution at 7 °C. Such a notable difference between [(en)Pd(L)]2(NO3)4 and [(tmeda)Pd(L)]3(NO3)6 might be explained by their different dynamic behavior via ring size effects.

AB - The reaction of (en)Pd(NO3)2 (en = ethylenediamine) with 1,4-bis(dimethyl-4-pyridylsilyl)benzene (L) affords cyclodimer, [(en)Pd(L)]2(NO3)4, whereas the reaction of (tmeda)Pd(NO3)2 (tmeda = N, N, N', N'-tetramethyl-ethylenediamine) with L gives cyclotrimer, [(tmeda)Pd(L)]3(NO3)6. Both complexes exist as catenane in water. The catenated cyclodimer is rigid whereas the catenatoed cyclotrimer is dynamic in water. The catenoated cyclotrimers afford hydrogelo containing 98.5% water below 2 °C. The hydrogel changes to its sol around 3 °C, and to its clear solution at 7 °C. Such a notable difference between [(en)Pd(L)]2(NO3)4 and [(tmeda)Pd(L)]3(NO3)6 might be explained by their different dynamic behavior via ring size effects.

KW - Catenane

KW - Hydrogelation

KW - Metallacycles

KW - Palladium

KW - Si ligands

UR - https://www.scopus.com/pages/publications/73249120571

U2 - 10.5012/bkcs.2009.30.3.573

DO - 10.5012/bkcs.2009.30.3.573

M3 - Journal article

AN - SCOPUS:73249120571

SN - 0253-2964

VL - 30

SP - 573

EP - 576

JO - Bulletin of the Korean Chemical Society

JF - Bulletin of the Korean Chemical Society

IS - 3

ER -

First hydrogelation of discrete metal complexes. Structures and fluxional behavior of cyclopalladium(II) complexes

Abstract

Keywords

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