Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 27th March 2019 from 11:00 AM to 1:00 PM (GMT).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 42, 2018
Previous Article Next Article

Designed single-source precursors for iron germanide nanoparticles: colloidal synthesis and magnetic properties

Author affiliations

Abstract

The synthesis of iron germanide nanoparticles at the nanoscale is a challenging task. Here, we describe the preparation of nanocrystals of the hexagonal Fe1.67Ge phase via the thermolysis of single source precursors [{iPrNC(tBu)NiPr}RGe]Fe(CO)4 (where R = Cl, N(SiMe3)2) under mild conditions (200 °C). These bimetallic precursors and the corresponding germylenes [{iPrNC(tBu)NiPr}RGe] were fully characterized by spectroscopic techniques as well as single crystal X-ray diffraction. While the structural features of the molecular species were shown to be almost identical, the results of the thermolysis were highly dependent on the nature of R. When R = Cl, multimodal size distributions and non-controlled phases were obtained. In contrast, the thermolysis of [{iPrNC(tBu)NiPr}{N(SiMe3)2}Ge]Fe(CO)4 yielded pure ferromagnetic Fe1.67Ge nanoparticles with a mean diameter close to 6 nm and a narrow size distribution (<12%). These results were rationalized in terms of Ge–substituent bond energy thanks to a computational study.

Graphical abstract: Designed single-source precursors for iron germanide nanoparticles: colloidal synthesis and magnetic properties

Back to tab navigation

Supplementary files

Publication details

The article was received on 19 Jul 2018, accepted on 25 Sep 2018 and first published on 27 Sep 2018


Article type: Paper
DOI: 10.1039/C8DT02942C
Citation: Dalton Trans., 2018,47, 15114-15120

  •   Request permissions

    Designed single-source precursors for iron germanide nanoparticles: colloidal synthesis and magnetic properties

    A. Sodreau, S. Mallet-Ladeira, S. Lachaize, K. Miqueu, J. Sotiropoulos, D. Madec, C. Nayral and F. Delpech, Dalton Trans., 2018, 47, 15114
    DOI: 10.1039/C8DT02942C

Search articles by author

Spotlight

Advertisements