Magnetic properties of hybrid organo-inorganic copper(II) oxovanadate(V) phosphate and phosphonate bridged systems

E. Spodine; D. Venegas-Yazigi; S. Ushak; V. Paredes-García; M. Saldias; E. Le Fur; J. Y. Pivan

doi:10.1016/j.poly.2006.10.033

Magnetic properties of hybrid organo-inorganic copper(II) oxovanadate(V) phosphate and phosphonate bridged systems

E. Spodine
, D. Venegas-Yazigi
, S. Ushak
, V. Paredes-García
, M. Saldias
, E. Le Fur
, J. Y. Pivan

Universidad Central de Chile

Universidad de Chile
F-

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

The hybrid organo-inorganic compounds [Cu₄(bipy)₄V₄O₁₁(PO₄)₂]nH₂O (n ∼ 5) (1), [Cu₂(phen)₂(PO₄)(H₂PO₄)₂(VO₂) · 2H₂O] (2) and [Cu₂(phen)₂(O₃PCH₂PO₃)(V₂O₅) (H₂O)]H₂O (3) which present different bridging forms of the phosphate/phosphonate group, show different bulk magnetic properties. We herein analyze the magnetic behaviour of these compounds in terms of their structural parameters. We also report a theoretical study for compound (1) assuming four different magnetic exchange pathways between the copper centres present in the tetranuclear unit. For compound (1) the following J values were obtained J₁ = +3.29; J₂ = -0.63; J₃ = -2.23; J₄ = -46.14 cm^-1. Compound (2) presents a Curie-Weiss behaviour in the whole range of temperature (3-300 K), and compound (3) shows a maximum for the magnetic susceptibility at 64 K, typical for antiferromagnetic interactions. These data where fitted using a model previously reported in the literature, assuming two different magnetic exchange pathways between the four copper(II) centres, with J₁ = -30.0 and J₂ = -8.5 cm^-1.

Original language	English
Pages (from-to)	2121-2125
Number of pages	5
Journal	Polyhedron
Volume	26
Issue number	9-11
DOIs	https://doi.org/10.1016/j.poly.2006.10.033
State	Published - 15 Jun 2007

Keywords

Copper(II)
DFT calculations
Magnetic properties
Organo-inorganic systems
Phosphate
Phosphonate

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10.1016/j.poly.2006.10.033

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@article{021332120a2047dea44d33f6141a4512,

title = "Magnetic properties of hybrid organo-inorganic copper(II) oxovanadate(V) phosphate and phosphonate bridged systems",

abstract = "The hybrid organo-inorganic compounds [Cu4(bipy)4V4O11(PO4)2]nH2O (n ∼ 5) (1), [Cu2(phen)2(PO4)(H2PO4)2(VO2) · 2H2O] (2) and [Cu2(phen)2(O3PCH2PO3)(V2O5) (H2O)]H2O (3) which present different bridging forms of the phosphate/phosphonate group, show different bulk magnetic properties. We herein analyze the magnetic behaviour of these compounds in terms of their structural parameters. We also report a theoretical study for compound (1) assuming four different magnetic exchange pathways between the copper centres present in the tetranuclear unit. For compound (1) the following J values were obtained J1 = +3.29; J2 = -0.63; J3 = -2.23; J4 = -46.14 cm-1. Compound (2) presents a Curie-Weiss behaviour in the whole range of temperature (3-300 K), and compound (3) shows a maximum for the magnetic susceptibility at 64 K, typical for antiferromagnetic interactions. These data where fitted using a model previously reported in the literature, assuming two different magnetic exchange pathways between the four copper(II) centres, with J1 = -30.0 and J2 = -8.5 cm-1.",

keywords = "Copper(II), DFT calculations, Magnetic properties, Organo-inorganic systems, Phosphate, Phosphonate",

author = "E. Spodine and D. Venegas-Yazigi and S. Ushak and V. Paredes-Garc{\'i}a and M. Saldias and \{Le Fur\}, E. and Pivan, \{J. Y.\}",

year = "2007",

month = jun,

day = "15",

doi = "10.1016/j.poly.2006.10.033",

language = "English",

volume = "26",

pages = "2121--2125",

journal = "Polyhedron",

issn = "0277-5387",

number = "9-11",

}

TY - JOUR

T1 - Magnetic properties of hybrid organo-inorganic copper(II) oxovanadate(V) phosphate and phosphonate bridged systems

AU - Spodine, E.

AU - Venegas-Yazigi, D.

AU - Ushak, S.

AU - Paredes-García, V.

AU - Saldias, M.

AU - Le Fur, E.

AU - Pivan, J. Y.

PY - 2007/6/15

Y1 - 2007/6/15

N2 - The hybrid organo-inorganic compounds [Cu4(bipy)4V4O11(PO4)2]nH2O (n ∼ 5) (1), [Cu2(phen)2(PO4)(H2PO4)2(VO2) · 2H2O] (2) and [Cu2(phen)2(O3PCH2PO3)(V2O5) (H2O)]H2O (3) which present different bridging forms of the phosphate/phosphonate group, show different bulk magnetic properties. We herein analyze the magnetic behaviour of these compounds in terms of their structural parameters. We also report a theoretical study for compound (1) assuming four different magnetic exchange pathways between the copper centres present in the tetranuclear unit. For compound (1) the following J values were obtained J1 = +3.29; J2 = -0.63; J3 = -2.23; J4 = -46.14 cm-1. Compound (2) presents a Curie-Weiss behaviour in the whole range of temperature (3-300 K), and compound (3) shows a maximum for the magnetic susceptibility at 64 K, typical for antiferromagnetic interactions. These data where fitted using a model previously reported in the literature, assuming two different magnetic exchange pathways between the four copper(II) centres, with J1 = -30.0 and J2 = -8.5 cm-1.

AB - The hybrid organo-inorganic compounds [Cu4(bipy)4V4O11(PO4)2]nH2O (n ∼ 5) (1), [Cu2(phen)2(PO4)(H2PO4)2(VO2) · 2H2O] (2) and [Cu2(phen)2(O3PCH2PO3)(V2O5) (H2O)]H2O (3) which present different bridging forms of the phosphate/phosphonate group, show different bulk magnetic properties. We herein analyze the magnetic behaviour of these compounds in terms of their structural parameters. We also report a theoretical study for compound (1) assuming four different magnetic exchange pathways between the copper centres present in the tetranuclear unit. For compound (1) the following J values were obtained J1 = +3.29; J2 = -0.63; J3 = -2.23; J4 = -46.14 cm-1. Compound (2) presents a Curie-Weiss behaviour in the whole range of temperature (3-300 K), and compound (3) shows a maximum for the magnetic susceptibility at 64 K, typical for antiferromagnetic interactions. These data where fitted using a model previously reported in the literature, assuming two different magnetic exchange pathways between the four copper(II) centres, with J1 = -30.0 and J2 = -8.5 cm-1.

KW - Copper(II)

KW - DFT calculations

KW - Magnetic properties

KW - Organo-inorganic systems

KW - Phosphate

KW - Phosphonate

UR - https://www.scopus.com/pages/publications/34249704067

U2 - 10.1016/j.poly.2006.10.033

DO - 10.1016/j.poly.2006.10.033

M3 - Article

AN - SCOPUS:34249704067

SN - 0277-5387

VL - 26

SP - 2121

EP - 2125

JO - Polyhedron

JF - Polyhedron

IS - 9-11

ER -

Magnetic properties of hybrid organo-inorganic copper(II) oxovanadate(V) phosphate and phosphonate bridged systems

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Keywords

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