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{Mn~(II)_9W~V_6}n nanowires organized into three-dimensional hybrid network of I1O 2 topology

机译:{Mn〜(II)_9W〜V_6} n纳米线组成I1O 2拓扑的三维混合网络

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摘要

Pentadecanuclear cyano-bridged high spin {Mn~(II)_9W ~V_6(CN)_(48)(solv)_(24)} clusters serve as bifunctional molecular building blocks in the construction of a {Mn ~(II)_9[WV(CN)_8]_6(dpe) _5(MeOH)_(10)}·14MeOH (dpe = trans-1,2-di(4-pyridyl) ethylene) organic-inorganic hybrid network of I1O2 topology. The intercluster connections are formed by Mn-NC-W and Mn-dpe-Mn linkages. The Mn-NC-W linkages lead to one-dimensional (1D) cyanido-bridged nanowires {Mn_9W_6}_n with a van der Vaals diameter changing periodically from ~1 to ~1.5 ?, with Mn-dpe-Mn linkages controlling the effective distances between them. The magnetic measurements suggest the superparamagnetic behavior of {Mn_9W _6}_n skeletons below 100 K due to the internal ferrimagnetic ordering through CN- bridges. Below 3.5 K, weak antiferromagnetic interactions between the {Mn_9W_6} _n operate, with two inflection points H_1 = 100 Oe and H_2 = 480 Oe observed in the M(H) curve at 1.8 K.
机译:十五烷氰基桥连的高自旋{Mn〜(II)_9W〜V_6(CN)_(48)(solv)_(24)}团簇在{Mn〜(II)_9 [ WIO(CN)_8] _6(dpe)_5(MeOH)_(10)}·1​​4MeOH(dpe = I1O2拓扑结构的反式-1,2-二(4-吡啶基)乙烯)有机-无机杂化网络。群集间连接由Mn-NC-W和Mn-dpe-Mn键形成。 Mn-NC-W键导致一维(1D)氰基桥联纳米线{Mn_9W_6} _n,范德法直径从-1到〜1.5?周期性变化,Mn-dpe-Mn键控制有效距离它们之间。磁性测量表明{Mn_9W _6} _n骨架在100 K以下具有超顺磁特性,这是由于通过CN桥的内部亚铁磁排序所致。在3.5 K以下,{Mn_9W_6} _n之间的弱反铁磁相互作用起作用,在1.8 K的M(H)曲线中观察到两个拐点H_1 = 100 Oe和H_2 = 480 Oe。

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