A self-assembled octanuclear complex bearing the uncommon close-packed {Fe4Mn4(mu(4)-O)(4)(mu-O)(4)} molecular core

Nesterova Oksana V.; Chygorin Eduard N.; Kokozay Vladimir N.; Omelchenko Irina V.; Shishkin Oleg V.; Boca Roman; Pombeiro Armando J. L.

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A self-assembled octanuclear complex bearing the uncommon close-packed {Fe4Mn4(mu(4)-O)(4)(mu-O)(4)} molecular core

机译：带有罕见的紧密堆积的{Fe4Mn4（mu（4）-O）（4）（mu-O）（4）}分子核的自组装八核复合物

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A one-pot open-air reaction of manganese powder with iron(II) chloride in DMF solution of the Schiff base (H2L) formed in situ from salicylaldehyde and hydroxylamine hydrochloride yields the heterometallic complex [Fe-4(mu(4)-O)(4)Mn-4(L)(8)(DMF)(4)]center dot 2DMF (1). Single crystal X-ray analysis shows that its molecular structure is based on the octanuclear core {Fe4Mn4(mu(4)-O)(4)(mu-O)(4)} with a quite rare molecular structure type {M-8(mu(4)-X) 4(mu-X)4}, where the central cube-like iron motif is modified with four terminal manganese fragments, the whole core being presented as the {Fe-4(mu(4)-O)(4)} + 4{Mn(mu-O)} combination. Using the data from the Cambridge Structural Database (CSD), an analysis of the octanuclear structures with similar central {M-4(mu(4)-X)(4)} fragments was performed. The hierarchical order of molecular structure types with the general formula M8Xn for such compounds was proposed and the topological features as well as the factors that influence the molecular type formation are discussed. Variable-temperature (1.8-300 K) magnetic susceptibility measurements reveal an antiferromagnetic coupling among the magnetic centres in 1.

机译：水杨醛和羟胺盐酸盐在原位形成的席夫碱（H2L）的DMF溶液中，锰粉与氯化铁（II）的一锅露天反应生成杂金属配合物[Fe-4（mu（4）-O ）（4）Mn-4（L）（8）（DMF）（4）]中心点2DMF（1）。单晶X射线分析表明，其分子结构基于八角核{Fe4Mn4（mu（4）-O）（4）（mu-O）（4）}，分子结构类型{M-8 （mu（4）-X）4（mu-X）4}，其中中心的立方体状铁基元被四个末端锰片段修饰，整个核心表示为{Fe-4（mu（4）- O）（4）} + 4 {Mn（mu-O）}的组合。使用来自剑桥结构数据库（CSD）的数据，对具有类似中央{M-4（mu（4）-X）（4）}片段的八核结构进行了分析。提出了通式为M8Xn的此类化合物的分子结构类型的层次顺序，并讨论了其拓扑特征以及影响分子类型形成的因素。可变温度（1.8-300 K）的磁化率测量结果显示1中磁中心之间存在反铁磁耦合。

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《Dalton transactions: An international journal of inorganic chemistry》 |2015年第33期|共7页
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Nesterova Oksana V.; Chygorin Eduard N.; Kokozay Vladimir N.; Omelchenko Irina V.; Shishkin Oleg V.; Boca Roman; Pombeiro Armando J. L.;
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1. A self-assembled octanuclear complex bearing the uncommon close-packed {Fe4Mn4(mu(4)-O)(4)(mu-O)(4)} molecular core [J] . Nesterova Oksana V., Chygorin Eduard N., Kokozay Vladimir N., Dalton transactions: An international journal of inorganic chemistry . 2015,第33期

机译：带有罕见的紧密堆积的{Fe4Mn4（mu（4）-O）（4）（mu-O）（4）}分子核的自组装八核复合物
2. Modeling the oxygen-evolving complex of photosystem II. Synthesis, redox properties, and core interconversion studies of dimanganese complexes having {Mn-2(III)(mu-O)(mu-OAc)(2)}(2+), {(MnMnIV)-Mn-III(mu-O)(2)(mu-OAc)}(2+), and {Mn-2(IV)(mu-O)(2)(mu- [J] . Lal TK., Mukherjee R. Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics . 1998,第10期

机译：模拟光系统II的析氧复合物。具有{Mn-2（III）（mu-O）（mu-OAc）（2）}（2 +），{（MnMnIV）-Mn-III（mu--）的二锰配合物的合成，氧化还原性质和核互变研究O）（2）（mu-OAc）}（2+）和{Mn-2（IV）（mu-O）（2）（mu-
3. STERICALLY CROWDED MANGANESE-OXO COMPLEXES OF N,N-BIS(2-PYRIDYLMETHYL)-TERT-BUTYLAMINE WITH BRIDGED BINUCLEAR CORE TYPES (MN-III(2)(MU-O)(MU-OAC)(2)) AND (MN-IV(2)(MU-O)(2)(MU-OAC)) [J] . Mok HJ., Pal S., Mandal SK., Inorganica Chimica Acta . 1997,第1a2期

机译：N，N-双（2-吡咯甲基）-叔丁胺的桥接核芯类型（MN-III（2）（MU-O）（MU-OAC）（2））和（MN）的空间拥挤锰-氧配合物-IV（2）（MU-O）（2）（MU-OAC））
4. Stepwise transition of the tetra-manganese complex of Photosystem II to a binuclear Mn_2(mu-O)_2 complex in response to a temperature jump: an X-ray absorption spectroscopy study [C] . P. Pospisil, M. Haumann, J. Dittmer, International Congress on Photosynthesis . 2001

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机译：富含羧酸富含量的含羧酸盐的复合物的合成与表征，其具有O2依赖性酰胺酶的3+核心的{Fe2（MU-OH）2（MU-O2CR）3+和{Fe 2（MU-O）（MU-O2CR）}

A self-assembled octanuclear complex bearing the uncommon close-packed {Fe4Mn4(mu(4)-O)(4)(mu-O)(4)} molecular core

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