A two-dimensional honeycomb coordination network based on fused triacontanuclear heterometallic {Co12Mn18} wheels.
نویسندگان
چکیده
An unprecedented two-dimensional honeycomb network based on fused triacontanuclear heterometallic wheels of 3.4 nm, {[Co2(Mn3O)(N3)2(pic)6(NO3)](-)}6 (Hpic = picolinic acid), has been assembled. The hexagonal {Co12Mn18} wheel motif is composed of six oxo-centered {Mn3} trinuclear and six {Co2} dinuclear moieties acting as nodes and linkers, respectively. The paramagnetic properties of this compound observed down to 1.8 K result from the competition of Mn···Mn, Mn···Co and Co···Co interactions in combination with spin-orbit coupling and single-ion behavior of the Co(II) centers.
منابع مشابه
Large Hexadecametallic {Mn–Ln} Wheels: Synthesis, Structural, Magnetic, and Theoretical Characterization
The synthesis, gas sorption studies, magnetic properties, and theoretical studies of new molecular wheels of core type {Mn8Ln III 8} (Ln=Dy, Ho, Er, Y and Yb), using the ligand mdeaH2, in the presence of ortho-toluic or benzoic acid are reported. From the seven wheels studied the {Mn8Dy8} and {Mn8Y8} analogues exhibit SMM behavior as determined from ac susceptibility experiments in a zero stati...
متن کاملA nanosized Gd6Ni3 cluster-based heterometallic coordination polymer.
A nanosized Gd6Ni3 cluster-based two-dimensional 3d-4f heterometallic coordination polymer has been synthesized under hydrothermal conditions using a mixture of H4PMIDA (H4PMIDA = N-(phosphonomethyl) iminodiacetic acid), Gd(ClO4)3 and Ni(CH3COO)2·4H2O. An electrical property investigation reveals that the coordination polymer exhibits a proton conductivity.
متن کاملSyntheses, structures, and magnetic properties of heterometallic coordination polymers with carboxyphosphonate linkers†
Five heterometallic coordination polymers were synthesized utilizing the multifunctional carboxyphosphonate ligand N-(phosphonomethyl)iminodiacetic acid (H4PMIDA), N(CH2PO(OH)2)(CH2COOH)2, with a coordinating nitrogen atom and two carboxylate and one phosphonate groups. The compounds were characterized structurally and magnetically. [Cu2M2(PMIDA)2(H2O)6]$3H2O for M 1⁄4 Mn (1-CuMn), Co (2-CuCo),...
متن کاملCoordination polymers with 4,4'-bipyrimidine. Using a combination of endo- and exodentate donors to build a one-dimensional Ag(I) ladder and a heterometallic Co(II)Ag(I)2 network.
The ligand 4,4'-bipyrimidine combines a chelating bipyridine group and two terminal donor atoms into a single molecule; chelation to a single Ag(I) centre forms a square planar complex which can then form an extended planar ladder-type polymer by linking through linear Ag(I) centres whereas bis-coordination to an octahedral Co(II) centre yields a building block with four external donor nitrogen...
متن کاملFolded Cr12Co12 and Cr12Ni12 wheels: a sharp increase in nuclearity of heterometallic chromium rings.
Two novel record-sized heterometallic Cr12M12 (M = Co, Ni) chromium wheels with an unusual saddle-like architecture are created by reacting appropriate precursor complexes with the bridging ligand 2,2'-bipyrimidine.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Chemical communications
دوره 51 34 شماره
صفحات -
تاریخ انتشار 2015