Synthesis, structure and physical properties of a low dimensional compound

被引：1

作者：

Silva, Manuela Ramos ^{[1
]}

Coutinho, Joana T. ^{[2
]}

Pereira, Laura C. J. ^{[2
]}

Martin-Ramos, Pablo ^{[1
,3
]}

Waerenborgh, Joao C. ^{[2
]}

机构：

[1] Univ Coimbra, Dept Phys, CFisUC, Rua Larga, P-3004516 Coimbra, Portugal

[2] Univ Lisbon, Inst Super Tecn, Ctr Ciencias & Tecnol Nucl, P-2695066 Bobadela Lrs, Portugal

[3] Univ Zaragoza, Higher Polytech Sch Huesca, Ctra Cuarte S-N, Huesca 22071, Spain

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2017年 / 172卷

关键词：

AFM interaction; Cyanoacetate complex; Low dimensional compound; Trinuclear Fe(III) complex; MAGNETIC-PROPERTIES; FE(III); COMPLEXES; LIGANDS; CORE;

D O I：

10.1016/j.saa.2016.06.037

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The crystal structure of (mu(3)-oxo)hexakis(cyanoacetato-kappa O,O')(cyanoacetato-kappa O)diaquatriiron(III) cyanoacetic acid shows the formation of trinuclear complexes in a hydrogen-bond network that bonds all the molecules in a 3D arrangement For this complex, within whose clusters the whole magnetic interaction takes place, Fe-57 Mossbauer spectroscopy shows that the Fe cations are in the S = 5/2 state in the temperature range 2-295 K. The asymmetric broadening of the absorption peaks below 80 K is consistent with strong antiferromagnetic interactions between the metal spins. The magnetization measurements also show the antiferromagnetic character of the spin ensemble and an S-T = 1/2 magnetic ground state typical of triangular systems with similar J between Fe-Fe pairs. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：9 / 13

页数：5

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