Synthesis and magnetic characterization of a cubane-type Mn-4 cluster, housed in a sterically hindered carboxylate ligand pocket

Sivanesan, Dharmalingam; Son, Kwanghyo; Lee, Ha-Jin; Park, Key Taeck; Jang, Zeehoon; Suh, Byoung Jin; Yoon, Sungho

doi:10.1016/j.poly.2012.11.005

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Synthesis and magnetic characterization of a cubane-type Mn-4 cluster, housed in a sterically hindered carboxylate ligand pocket

Sivanesan, Dharmalingam;
Son, Kwanghyo;
Lee, Ha-Jin;
Park, Key Taeck;
Jang, Zeehoon;
... Yoon, Sungho;
외 1명

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초록

The use of sterically hindered terphenyl-based carboxylate, -O2CAr4F-Ph, in manganese (II) chemistry has yielded a new cubane-type Ma(4) cluster, in which four Mn(II) sites have slightly distorted octahedral geometries with a distinctive O-6 donor atom sets. Based on the total energy calculations for magnetic states of the cluster using the LDA + U method, two kinds of magnetic exchange coupling interactions between Mn(II) sites are chosen to fit the measured magnetic properties, resulting in weak intramolecular antiferromagnetic interactions (J = -1.91 K, J' = -3.07 K, and g = 2.00). (C) 2012 Elsevier Ltd. All rights reserved.

키워드

Cubane-type Mn-4 cluster; Sterically hindered carboxylate; Magnetic; Synthesis; SINGLE-MOLECULE MAGNETS; PHOTOSYNTHETIC WATER OXIDATION; REDUCTIVE-AGGREGATION ROUTE; DI-2-PYRIDYL KETONE; OXIDIZING COMPLEX; DIFFERENT RATES; MIXED-VALENT; M-TERPHENYLS; SPIN; CORE

제목: Synthesis and magnetic characterization of a cubane-type Mn-4 cluster, housed in a sterically hindered carboxylate ligand pocket

저자: Sivanesan, Dharmalingam; Son, Kwanghyo; Lee, Ha-Jin; Park, Key Taeck; Jang, Zeehoon; Suh, Byoung Jin; Yoon, Sungho

DOI: 10.1016/j.poly.2012.11.005

발행일: 2013-02

유형: Article

저널명: Polyhedron

권: 50

호: 1

페이지: 339 ~ 344

언어: ENG

출판사: PERGAMON-ELSEVIER SCIENCE LTD

발행국가: 영국

분량: 6 페이지

ISSN: E 1873-3719
P 0277-5387