Platinum(II) Complexes of Tridentate N∧N- ∧N -Coordinating Ligands Based on Imides, Amides, and Hydrazides: Synthesis and Luminescence Properties

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F20%3A43920442" target="_blank" >RIV/60461373:22310/20:43920442 - isvavai.cz</a>

Výsledek na webu

<a href="https://chemistry-europe.onlinelibrary.wiley.com/doi/full/10.1002/ejic.202000879" target="_blank" >https://chemistry-europe.onlinelibrary.wiley.com/doi/full/10.1002/ejic.202000879</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/ejic.202000879" target="_blank" >10.1002/ejic.202000879</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Platinum(II) Complexes of Tridentate N∧N- ∧N -Coordinating Ligands Based on Imides, Amides, and Hydrazides: Synthesis and Luminescence Properties

Popis výsledku v původním jazyce

Five Pt(II) complexes are described in which the metal ion is bound to anionic (Formula presented.) -coordinating ligands. The central, deprotonated N atom is derived from an imide Ar−C(=O)−NH−C(=O)−Ar {PtL1–2Cl; Ar=pyridine or pyrimidine}, an amide py−C(=O)−NH−CH2−py {PtL3Cl}, or a hydrazide py−C(=O)−NH−N=CH−py {PtL4Cl}. The imide complexes PtL1–2Cl show no significant emission in solution but are modestly bright green/yellow phosphors in the solid state. PtL3Cl is weakly phosphorescent. PtL4Cl is formed as a mixture of isomers, bound through either the amido or imino nitrogen, the latter converting to the former upon absorption of light. Remarkably, the imino form displays fluorescence in solution, λ0,0=535 nm, whereas the amido shows phosphorescence, λ0,0=624 nm, τ=440 ns. It is highly unusual for two isomeric compounds to display emission from states of different spin multiplicity. The amido-bound PtL4Cl can act as a bidentate (Formula presented.) -coordinating ligand, demonstrated by the formation of bimetallic complexes with iridium(III) or ruthenium(II).

Název v anglickém jazyce

Platinum(II) Complexes of Tridentate N∧N- ∧N -Coordinating Ligands Based on Imides, Amides, and Hydrazides: Synthesis and Luminescence Properties

Popis výsledku anglicky

Five Pt(II) complexes are described in which the metal ion is bound to anionic (Formula presented.) -coordinating ligands. The central, deprotonated N atom is derived from an imide Ar−C(=O)−NH−C(=O)−Ar {PtL1–2Cl; Ar=pyridine or pyrimidine}, an amide py−C(=O)−NH−CH2−py {PtL3Cl}, or a hydrazide py−C(=O)−NH−N=CH−py {PtL4Cl}. The imide complexes PtL1–2Cl show no significant emission in solution but are modestly bright green/yellow phosphors in the solid state. PtL3Cl is weakly phosphorescent. PtL4Cl is formed as a mixture of isomers, bound through either the amido or imino nitrogen, the latter converting to the former upon absorption of light. Remarkably, the imino form displays fluorescence in solution, λ0,0=535 nm, whereas the amido shows phosphorescence, λ0,0=624 nm, τ=440 ns. It is highly unusual for two isomeric compounds to display emission from states of different spin multiplicity. The amido-bound PtL4Cl can act as a bidentate (Formula presented.) -coordinating ligand, demonstrated by the formation of bimetallic complexes with iridium(III) or ruthenium(II).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

European Journal of Inorganic Chemistry

ISSN

1434-1948

e-ISSN

—

Svazek periodika

2021

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

335-347

Kód UT WoS článku

000600778600001

EID výsledku v databázi Scopus

2-s2.0-85097899326