The First Heterometallic Acetate-Bridged Pt(II)–Pd(II) Complex: Synthesis, Structure, and Formation of Bimetallic PtPd2 Nanoparticles


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The reaction of platinum acetate blue, empirically described as Pt(OOCMe)2.50, with palladium(II) acetate Pd3(μ-OOCMe)6 gave the first heterometallic acetate-bridged platinum(II) and palladium(II) complex Pd2Pt(μ-OOCMe)6 (I) as co-crystallizates 17Pd2Pt(μ-OOCMe)6 ⋅ 4Pd3(μ-OOCMe)6 ⋅ 42C6H6 (IIa) and 17Pd2Pt(μ-OOCMe)6 ⋅ 4 Pd3(μ-OOCMe)6 (IIb). Single crystal X-ray diffraction (CIF files CCDC nos. 1568105 and 1852744), EXAFS, and quantum chemical studies (DFT and QTAIM) of complex I revealed a slightly distorted triangular structure similar to the structure of palladium(II) acetate Pd3(μ-OOCMe)6 and hypothetical platinum(II) complex Pt3(μ-OOCMe)6. The thermal decomposition of complex IIa gives the bimetallic alloy PtPd2. A combined X-ray diffraction and EXAFS study demonstrated that the obtained material consists of core (Pt)–shell (Pd) particles with an average size of ~28 nm and a minor amount of smaller (~5 nm) PdO nanoparticles on the surface. The obtained results are useful for the understanding of the nature and structure of the supported phase of heterogeneous Pt–Pd catalysts.

作者简介

N. Cherkashina

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Email: wahr36@gmail.com
俄罗斯联邦, Moscow, 119991

A. Churakov

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Email: wahr36@gmail.com
俄罗斯联邦, Moscow, 119991

I. Yakushev

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Email: wahr36@gmail.com
俄罗斯联邦, Moscow, 119991

I. Stolyarov

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Email: wahr36@gmail.com
俄罗斯联邦, Moscow, 119991

V. Khrustalev

Peoples’ Friendship University of Russia

Email: wahr36@gmail.com
俄罗斯联邦, Moscow, 117198

E. Khramov

Peoples’ Friendship University of Russia; National Research Center Kurchatov Institute

Email: wahr36@gmail.com
俄罗斯联邦, Moscow, 117198; Moscow, 123182

A. Markov

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Email: wahr36@gmail.com
俄罗斯联邦, Moscow, 119991

N. Smirnova

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Email: wahr36@gmail.com
俄罗斯联邦, Moscow, 119991

Ya. Zubavichus

National Research Center Kurchatov Institute

Email: wahr36@gmail.com
俄罗斯联邦, Moscow, 123182

P. Dorovatovskii

National Research Center Kurchatov Institute

Email: wahr36@gmail.com
俄罗斯联邦, Moscow, 123182

Zh. Dobrokhotova

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Email: wahr36@gmail.com
俄罗斯联邦, Moscow, 119991

A. Ilyukhin

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Email: wahr36@gmail.com
俄罗斯联邦, Moscow, 119991

M. Vargaftik

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

编辑信件的主要联系方式.
Email: wahr36@gmail.com
俄罗斯联邦, Moscow, 119991

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