Heterocyclic amine directed synthesis of metal(ii)-oxalates: Investigating the magnetic properties of two complete series of chains with S = 5/2 to S = 1/2

Keene T.D.; Zimmermann I.; Neels A.; Sereda O.; Hauser J.; Bonin M.; Hursthouse M.B.; Price D.J.; Decurtins S.

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Heterocyclic amine directed synthesis of metal(ii)-oxalates: Investigating the magnetic properties of two complete series of chains with S = 5/2 to S = 1/2

机译：杂环胺定向合成草酸金属（ii）：研究S = 5/2至S = 1/2的两个完整系列链的磁性

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We report here two series of coordination polymer chains: the first being [M(ii)(ox)(bnz)_2]_n (M = Mn 1, Fe 2, Co 3, Ni 4, Cu 5 and Zn 6; ox = oxalate C_2O_4~(2-); bnz = benzimidazole) and the second [M(ii)(ox)(btz)_2]_n (M = Mn 7, Fe 8, Co 9, Ni 10, Cu 11 and Zn 12; btz = benzotriazole). The first series displays an unusual homometallic [-M_i-M_(ii)-M_(ii)-]_n chain topology and the second series is isostructural to [Fe(ii)(ox)(btz) _2]_n, originally reported by Jia et al. (Collect. Czech. Chem. Commun., 2002, 67, 1609-1615). These two series allow us to make comparisons between the spin state of each metal and the magnetic coupling interaction within an isostructural series spanning the full range of spin states available in 3d metals and to investigate which models are the best to use in each case. Compound 8 is a single-chain magnet, the behaviour through spin-canting arising from a Dzyaloshinskii-Moriya interaction. Additionally, we have synthesised a two-dimensional coordination polymer {[Zn(ii)(bnz) _4][Zn(ii)_2(ox)_3]}n (13), in which distorted hexagonal [Zn(ii)2(ox)3]n2n- layers are hydrogen bonded by [Zn(ii)(bnz)_4] ~(2+) cations to give an interlayer separation of 12.001(2) ?.

机译：我们在这里报告了两个系列的配位聚合物链：第一个是[M（ii）（ox）（bnz）_2] _n（M = Mn 1，Fe 2，Co 3，Ni 4，Cu 5和Zn 6; ox =草酸盐C_2O_4〜（2-）; bnz =苯并咪唑）和第二个[M（ii）（ox）（btz）_2] _n（M = Mn 7，Fe 8，Co 9，Ni 10，Cu 11和Zn 12; btz =苯并三唑）。第一个系列显示不寻常的同金属[-M_i-M_（ii）-M_（ii）-] _ n链拓扑，第二个系列与[Fe（ii）（ox）（btz）_2] _n同构，最初由贾等。（Collect。Czech。Chem。Commun。，2002，67，1609-1615）。这两个系列使我们能够比较每种金属的自旋状态与等结构系列内的磁耦合相互作用，这些结构跨越了3d金属中可用的自旋状态的全部范围，并研究了在每种情况下最适合使用的模型。化合物8是单链磁体，其通过自旋can变的行为来自Dzyaloshinskii-Moriya相互作用。此外，我们合成了二维配位聚合物{[Zn（ii）（bnz）_4] [Zn（ii）_2（ox）_3]} n（13），其中扭曲的六角形[Zn（ii）2（ ox）3] n2n-层通过[Zn（ii）（bnz）_4]〜（2+）阳离子进行氢键键合，层间间距为12.001（2）。

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《Dalton transactions: An international journal of inorganic chemistry》 |2010年第20期|共14页
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Keene T.D.; Zimmermann I.; Neels A.; Sereda O.; Hauser J.; Bonin M.; Hursthouse M.B.; Price D.J.; Decurtins S.;
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Heterocyclic amine directed synthesis of metal(ii)-oxalates: Investigating the magnetic properties of two complete series of chains with S = 5/2 to S = 1/2

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