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Wheel-like Mn-6(II) and Ni-6(II) complexes from the use of 2-pyridinealdoxime and carboxylates
Zhang, Suyun2; Zhen, Lina2; Xu, Bin3; Inglis, Ross1; Li, Kai2; Chen, Wenqian2; Zhang, Yong2; Konidaris, Konstantis F.4; Perlepes, Spyros P.4; Brechin, Euan K.1; Li, Yahong2,3
2010
发表期刊DALTON TRANSACTIONS
卷号39期号:15页码:3563-3571
文章类型Article
摘要The employment of 2-pyridinealdoxime, (py)C(H)NOH, in nickel(II) and manganese(II) carboxylate chemistry under solvothermal conditions is reported. The syntheses, crystal structures and magnetochemical characterization (for two representative compounds) are described for [Ni-6(O2CMe)(6){(py)C(H)NO}(6)]center dot H2O(1 center dot H2O), [Ni-6(O2CPh)(6){(py)C(H)NO}(6)]center dot 2EtOH (2 center dot 2EtOH), [Ni-6{(4-Cl)O2CPh}(6){(py)C(H)NO}(6)]center dot 2EtOH (3 center dot 2EtOH) and [Mn-6(O2CMe)(6){(py)C(H)NO}(6)]center dot H2O (4 center dot H2O), where (4-Cl)PhCO2- is 4-chlorobenzoate. The reactions of M(O2CMe)(2)center dot 4H(2)O (M=Ni, Mn) with one equivalent of (py) C(H) NOH in EtOH at 120 degrees C under autogenous pressure give isostructural 1 center dot H2O and 4 center dot H2O. Complexes 2 center dot 2EtOH and 3 center dot 2EtOH were obtained from the 1 : 1 : 1 Ni(O2CMe)(2)center dot 4H(2)O/{(py)C(H)NOH/(X)PhCO2H reaction mixtures in EtOH under solvothermal conditions (X = H, 4-Cl). The structurally similar clusters 1-4 have a wheel-like topology with the six metal ions in a chair conformation. Each metal site is bound to four oxygen and two nitrogen atoms; the donor atoms come from two carboxylate oxygens, two oximate oxygens, one pyridyl nitrogen and one oximate nitrogen atom. The carboxylate ligands show the syn, syn eta(1):eta(1):mu mode, while the (py)C(H)NO- ions behave as eta(1):eta(1):eta(2):mu(3) ligands. Each metal center dot center dot center dot metal vector is bridged by one carboxylate group, one mu-O derived from a (py)C(H)NO- ligand and by one diatomic oximate-NO- group from an adjacent (py)C(H)NO- group. The IR spectra of the complexes are discussed in terms of the coordination modes of the ligands. Variable-temperature, solid-state dc magnetic susceptibility studies were carried out on polycrystalline samples of 1 and 4. The data in the 2.0-300 K range have been fit to a model with one J value revealing moderate (1) or weak (2) antiferromagnetic M-II center dot center dot center dot M-II exchange interactions. This work demonstrates the synthetic potential of combining (py)C(H)NOH with carboxylate ligands and the usefulness of solvothermal techniques in 3d-metal cluster chemistry.
WOS标题词Science & Technology ; Physical Sciences
关键词[WOS]SINGLE-MOLECULE MAGNETS ; HIGH-SPIN MOLECULES ; TARGETED STRUCTURAL DISTORTION ; GROUND-STATE ; COORDINATION CHEMISTRY ; DI-2-PYRIDYL KETONE ; CRYSTAL-STRUCTURE ; CHAIN MAGNETS ; DERIVATIZED SALICYLALDOXIMES ; LIGAND 2-PYRIDINEALDOXIME
收录类别SCI
语种英语
WOS研究方向Chemistry
WOS类目Chemistry, Inorganic & Nuclear
WOS记录号WOS:000276152800005
引用统计
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/5950
专题青海盐湖研究所知识仓储
作者单位1.Univ Edinburgh, Sch Chem, Edinburgh EH9 3JJ, Midlothian, Scotland
2.Suzhou Univ, Key Lab Organ Synth Jiangsu Prov, Dept Chem & Chem Engn, Suzhou 215006, Peoples R China
3.Chinese Acad Sci, CAS Key Lab Salt Lake Resources & Chem, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China
4.Univ Patras, Dept Chem, Patras 26504, Greece
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Zhang, Suyun,Zhen, Lina,Xu, Bin,et al. Wheel-like Mn-6(II) and Ni-6(II) complexes from the use of 2-pyridinealdoxime and carboxylates[J]. DALTON TRANSACTIONS,2010,39(15):3563-3571.
APA Zhang, Suyun.,Zhen, Lina.,Xu, Bin.,Inglis, Ross.,Li, Kai.,...&Li, Yahong.(2010).Wheel-like Mn-6(II) and Ni-6(II) complexes from the use of 2-pyridinealdoxime and carboxylates.DALTON TRANSACTIONS,39(15),3563-3571.
MLA Zhang, Suyun,et al."Wheel-like Mn-6(II) and Ni-6(II) complexes from the use of 2-pyridinealdoxime and carboxylates".DALTON TRANSACTIONS 39.15(2010):3563-3571.
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