One-Dimensional Coordination Polymers from Hexanuclear Manganese Carboxylate Clusters Featuring a {MnII4MnIII2(μ4-O)2} Core and Spacer Linkers
摘要:
The bridging of hexanuclear mixed-valent carboxylate coordination clusters of the type [Mn6O2(O2CR)(10)] (R = CMe3; CHMe2) featuring a {(Mn4Mn2II)-Mn-II (mu(4)-O)(2)}core by geometrically rigid as well as flexible spacer ligands such as pyrazine (pyz), nicotinamide (na), or 1,2-bis(4-pyridyl)ethane (bpe) results exclusively in one-dimensional (1D) coordination polymers. The formation of {[Mn6O2(O2CCMe3)(10)(Me3CCO2H)(EtOH)(na)]center dot EtOH center dot H2O)(n) (1), {[Mn6O2CCHMe2)(10)(pyz)(3)]center dot H2O}, (2), and {[Mn6O2(O2CCMe2)(10)(Me2CCO2H)(EtOH)(bpe)]center dot Me2CHCO2H}(n) (3) illustrates a surprising preference of the interlinked {Mn-6} units toward 1D coordination chains. In the solid-state, the observed chain propagation axes are either colinear (1 and 3) or perpendicular (2), whereby crystal packing is further influenced by solvent molecules. Magnetic properties of these network compounds can be rationalized based on that the magnetism of discrete [Mn6O2(O2CR)(10)]-type coordination clusters with all-antiferromagnetic intramolecular exchange and weak antiferromagnetic intercluster coupling in 1, 2, and 3 follows the expected exchange coupling strength of the employed spacer linkers.
DOI:
10.1021/ic100541m
作为产物:
描述:
异丁酸 、 manganese (II) acetate tetrahydrate 以
neat (no solvent) 为溶剂,
以70%的产率得到manganese(II) isobutanoate
One-Dimensional Manganese Coordination Polymers Composed of Polynuclear Cluster Blocks and Polypyridyl Linkers: Structures and Properties
作者:Svetlana G. Baca、Iurii L. Malaestean、Tony D. Keene、Harry Adams、Michael D. Ward、Jürg Hauser、Antonia Neels、Silvio Decurtins
DOI:10.1021/ic8014145
日期:2008.12.1
The synthesis, crystalstructures and magneticproperties of five new manganesecompounds are reported. These include a linear trinuclear cluster [Mn(II)(3)(O(2)CCHMe(2))(6)(dpa)(2)].2MeCN (1) (dpa = 2,2'-dipyridylamine), a tetranuclear cluster [Mn(II)(2)Mn(III)(2)O(2)(O(2)CCMe(3))(6)(bpy)(2)] (3) (bpy = 2,2'-bipyridine), and chain coordination polymers composed of cluster blocks such as Mn(3), Mn(3)O
作者:Sonali J. Shah、Christopher M. Ramsey、Katie J. Heroux、James R. O’Brien、Antonio G. DiPasquale、Arnold L. Rheingold、Enrique del Barco、David N. Hendrickson
DOI:10.1021/ic800277j
日期:2008.7.1
frequency-dependent out-of-phase signals in the AC susceptibility measurements, collected in a temperature range of 1.8-5 K and in the frequency range of 50-10,000 Hz. Extrapolation of the in-phase component of the AC susceptibility data to 0 K indicates an S = 12 groundstate for 1 and an S = 11 ground-state for 2. Complex 1 has the highest-spin groundstate reported to date for a single-stranded manganese
两个新的单链六十二核锰车轮[Mn16(CH3COO)8(CH3CH2CH2COO)8(teaH)12] x 10 MeCN(1 x 10 MeCN)和[Mn16((CH3)2CHCOO)的合成,结构和磁性[16(teaH)12] x 4 CHCl3(2 x 4 CHCl3),其中teaH(2-)是三乙醇胺的二价阴离子。1在四边形I4(1)/ a空间组中结晶[a = b = 33.519(4)A和c = 16.659(2)A]。2在单斜C2 / c空间群中结晶[a = 21.473(5),b = 26.819(6),c = 35.186(7),β= 93.447(5)度]。两种络合物均由8个Mn(II)和8个Mn(III)离子在轮状拓扑中与12个单质子化的三乙醇胺配体交替组成。在1 T,0.1和0.01 T场中以及在1和2的1.8-300 K温度范围内收集了可变温度直流(DC)磁化率数据。在1
Linear trinuclear manganese(II) complexes: crystal structures and magnetic properties
作者:Svetlana G. Baca、Yulia Sevryugina、Rodolphe Clérac、Iurii Malaestean、Nicolae Gerbeleu、Marina A. Petrukhina
DOI:10.1016/j.inoche.2005.02.004
日期:2005.5
Abstract Two new trinuclearmanganese(II) complexes, [Mn3(O2CCH(CH3)2)6(N–N)2] (N–N is 1,10′-phenanthroline (1) and 2,2′-bipyridine (2)) have been prepared and fully characterized. Single crystal X-ray diffraction analysis confirmed a linear arrangement of three Mn(II) centers bridged by six isobutyric carboxylate groups. The magnetic measurements showed that both complexes exhibit an ST = 5/2 spin
Fe<sup>II/III</sup> and Mn<sup>II</sup> complexes based on 2,4,6-tris(2-pyridyl)-triazine: synthesis, structures, magnetic and biological properties
作者:Mariana Darii、Annabel Mikosch、Jan van Leusen、Victor Ch. Kravtsov、Elena G. Dvornina、Steliana T. Clapco、Alexandra Ciloci、Paul Kögerler、Svetlana G. Baca
DOI:10.1039/d2ra04868j
日期:——
metal-induced oxidation of one of the carbon atoms of the central triazine core. Magnetic properties of Fe(III)–tpt (2–5), Fe(II)–tpt (3a), and Mn(II)–tpt (7) compounds show dominant antiferromagnetic coupling for polynuclear coordination cluster compounds. The Mn(II)–tpt complexes 6 and 7 exhibit efficient catalyticproperties in the production of enzymes by microorganisms, which concerns the synthesis of exocellular
多吡啶基配体 2,4,6-三(2-吡啶基) -s-三嗪 (tpt) 与单核和多核 Fe( III ) 或 Mn( II ) 前体,特别是三核或六核 Fe( III ) 新戊酸盐的反应(piv - )、[Mn 6 O 2 (piv) 10 (Hpiv) 4 ] 和异丁酸Mn( II ) (ib - ) 在各种溶剂和各种反应条件下展示了配体令人惊讶的配位特性。反应生成单核[Fe III (tpt)(tptH)][Fe III Cl 4 ] 4 ·2(thf)·0.23(H 2O) ( 1 ), [Fe III (piv)(tpt)Cl 2 ] ( 2 ), [Fe II (tpt)Cl 2 ]·2(H 2 O) ( 3a ), 双核 [Fe III 2 O(tpt ) 2 Cl 4 ] ( 3 ) 和七核 [Fe III 7 O 4 (piv) 12 (tpt-O)]·A [A = MeCN (
作者:Iurii L. Malaestean、Manfred Speldrich、Arkady Ellern、Svetlana G. Baca、Michael Ward、Paul Kögerler
DOI:10.1002/ejic.200900602
日期:2009.10
Recrystallization of freshly prepared MnII isobutyrate from PrOH or from EtOH/MeCN mixtures containing pyrazole (pyr) yields neutral mixed-valence decanuclearmanganese(II/III) complexes, [Mn10O2(O2CCHMe2)18(HO2CCHMe2)2(PrOH)2] (1) and [Mn10O2(O2CCHMe2)18(pyr)4] (2). The Mn10 metal core of both 1 and 2 consists of eight MnII and two MnIII centers and represents a new motif in the structural organization