J 2018

Hexanuclear iron(III) alpha-aminophosphonate: synthesis, structure, and magnetic properties of a molecular wheel

DOROSHENKO, Iaroslav, Michal BABIAK, Axel BUCHHOLZ, Jiří TUČEK, Winfried PLASS et. al.

Basic information

Original name

Hexanuclear iron(III) alpha-aminophosphonate: synthesis, structure, and magnetic properties of a molecular wheel

Authors

DOROSHENKO, Iaroslav (804 Ukraine, belonging to the institution), Michal BABIAK (703 Slovakia, belonging to the institution), Axel BUCHHOLZ (276 Germany), Jiří TUČEK (203 Czech Republic), Winfried PLASS (276 Germany) and Jiří PINKAS (203 Czech Republic, guarantor, belonging to the institution)

Edition

New Journal of Chemistry, Cambridge, ROYAL SOC. CHEMISTRY, 2018, 1144-0546

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10402 Inorganic and nuclear chemistry

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 3.069

RIV identification code

RIV/00216224:14310/18:00102320

Organization unit

Faculty of Science

DOI

UT WoS

000423702900045

Keywords in English

iron; phosphonate; hexanuclear; Moessbauer spectroscopy;antiferromagnetic coupling

Tags

Tags

International impact, Reviewed
Změněno: 23/4/2024 11:02, Mgr. Michal Petr

Abstract

V originále

A new hexanuclear molecular iron phosphonate complex, [Fe-6(HAIPA)(12)(OH)(6)]center dot nH(2)O (1 center dot n(2)O) (H(2)AIPA = NH2(CH3)(2)CP(O)(OH)(2), (2-aminopropan-2-yl) phosphonic acid), was synthesized from Fe2+ and Fe3+ salts in water by interaction with the ligand salts. Addition of corresponding amounts of sodium or tetramethylammonium salts of H2AIPA to the solution of iron precursors led to the formation of large bright-green crystals of complex 1. Isolated products were studied by spectroscopic and analytical methods -IR, Mossbauer spectroscopy, TG/DSC, ICP-OES, and CHN analysis. A novel {Fe-6} hexanuclear molecular structure of 1 was confirmed by single crystal X-ray diffraction analysis. An octahedral coordination environment of iron cations is formed by phosphonate and hydroxo oxygens. Twelve phosphonate groups and six -OH groups act as bridging ligands and bind six Fe octahedra. Because of protonation of the amino group, the phosphonate anions coordinate in the zwitterionic form as HAIPA(-) (NH3+(CH3)(2)CPO32-). The iron cations are present in the form of high-spin Fe3+, which was confirmed by the bond valence sum (BVS) calculations and the Fe-57 Mossbauer spectra. The magnetic measurements show antiferromagnetic coupling between the iron centers with decreasing temperature.

Links

LM2015043, research and development project
Name: Česká infrastruktura pro integrativní strukturní biologii (Acronym: CIISB)
Investor: Ministry of Education, Youth and Sports of the CR
LQ1601, research and development project
Name: CEITEC 2020 (Acronym: CEITEC2020)
Investor: Ministry of Education, Youth and Sports of the CR