A Novel Octupolar Metal−Organic NLO Material Based on a Chiral 2D Coordination Network

Lin, Wenbin; Wang, Zhiyong; Ma, Ling

doi:10.1021/ja9928327

Cited by 456 publications

(184 citation statements)

References 21 publications

(11 reference statements)

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“…Coordination polymers (CPs) and metal-organic frameworks (MOFs) are well-known crystals constructed by an organic compound and a metal. Porous CPs (PCPs) and MOFs, in particular, are highly potential materials for gas storage, [22][23][24] ion exchange, [25][26][27][28] heterogeneous catalysis, [29][30][31] separation, 29,[32][33][34][35][36] and non-linear optics, [37][38][39] because of the nanospace separated from bulk space.…”

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confidence: 99%

Solvent-dependent Assembly of Discrete and Continuous CoCl2 Adamantane-based Ligand Complexes: Observations by CSI–Mass Spectrometry and X-ray Crystallography

et al. 2013

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773Significant attention has recently been given to coordination chemistry, which has found applications in the construction of complicated or nano-sized structures, catenanes, 1,2 rotaxanes, [3][4][5] helices, 6,7 molecular squares, 8-10 tetrahedral hosts, [11][12][13][14][15][16] and so on. 17-21Coordination compounds exist not only as discrete molecules in solution, but also as compounds with infinite periodicity in the crystal state. Coordination polymers (CPs) and metal-organic frameworks (MOFs) are well-known crystals constructed by an organic compound and a metal. Porous CPs (PCPs) and MOFs, in particular, are highly potential materials for gas storage, 22-24 ion exchange, 25-28 heterogeneous catalysis, 29-31 separation, 29,[32][33][34][35][36] and non-linear optics, 37-39 because of the nanospace separated from bulk space.Structure construction with a coordination bond plays a critical role in the formation of a complicated structure and the introduction of functionality into the structure for basic research and industrial applications. In structure control, it is important to adjust the metal-ligand stoichiometry based on the number of coordination sites or the coordination environment. For example, Lehn and coworkers 40 demonstrated the spontaneous formation of a cylindrical complex from five ligands and six metal ions, in which two hexaazatriphenylene derivatives acting as the planar molecule and three bisbipyridyl ligands linked at the 5,5′ positions acting as the pillar molecule were connected by three copper ions. The structure was characterized by 1 H NMR spectroscopy, fast atom bombardment mass spectrometry (MS), and single-crystal X-ray structure analysis. The concept of adjusting metal-ligand stoichiometry has been widely accepted in discrete complexes and CPs, depending on the metal coordination geometry and the ligand binding site. However, complex preparation relies on many factors, such as the temperature, concentration, and the counter ion. For instance, Fujita and coworkers 41 demonstrated the treatment of Pd(NO3)2 and a ditopic bidentate ligand assembled into a mixture of M4L8 and M3L6 box-like structures, depending on the ratio of dimethylsulfoxide to acetonitrile.In such an environment-dependent complex formation, advanced functions, including molecular switching and molecular catch and release, for instance, have been obtained in recent years. However, structure elucidation of obtained complexes is generally difficult by using only 1 H NMR analysis in the case that the numbers of ligands and metals are not known. Therefore, limited studies of environment-dependent complexes have been reported up to the present. [42][43][44][45][46] Conventional MS using electron ionization, chemical ionization, fast atom bombardment, and electro-spray ionization cannot detect large coordination complexes because the weak coordination bonds dissociate during ionization. Cold-spray ionization MS (CSI-MS) is one of the most promising solutions to this problem, 47 as it can detect coordination complexes w...

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Solvent-dependent Assembly of Discrete and Continuous CoCl2 Adamantane-based Ligand Complexes: Observations by CSI–Mass Spectrometry and X-ray Crystallography

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“…[1][2][3][4][5]. As ar esult, thep reparation of coordination polymers with unusualstructurehas attractedconsiderableattention.Bridging ligands containing N-or/and O-, have been widely used for syntheses of coordination polymers of transition metals and some coordination polymers have been obtained and reported in recent years [6][7]. In thetitle compound,[Ag 3 (CF 3 COO) 3 (C 12 H 12 N 2 )] n , the asymmetric unit consist of three Ag(I) atoms, three trifluoroacetate-kO:kO'a nions, ando ne m-1,2-di(4-pyridyl)ethylenekN:kN'molecules, in which the Ag1, Ag2 and nine fluorine atoms are all disorderd.…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of tris-(trifluoro-acetate-κO:κO')(μ-1,2-di(4-pyridyl)ethylene- κN:κN')trisilver(I), 2∞[Ag3(CF3COO)3(C12H12N2)], C18H12Ag3F9N2O6

Yang

2013

Zeitschrift Für Kristallographie - New Crystal Structures

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Source of materialAllchemicals andsolventsusedinthe synthesis were of reagent grade and were used without further purification. Amethanol solution of Ag(CF 3 COO) (0.022 g, 0.1m mol) was slowly added dropwise to the methanolic solution of 1,2-di-(4-pyridyl)ethylene (6 mL), and the mixture was stirred for 15 min. The resultant solution was allowed to evaporate in the dark at room temperature for two weeks to give the crystals suitable for crystal structure analysis. Experimental detailsHydrogen atomswere generated geometrically and refined as riding atomswith d(C-H) =0.93 Åand U iso (H) =1.2U eq (C). Caused by therefinement of adisorder model the U ij -values of the silver atomsvary significantly. DiscussionThe research on transition metal-organic coordination polymers has been rapidly expanding because of their fascinating topologies and potential applications, e.g. in catalysis, non-linear optics, fluorescence,e lectrical conductivity and magnetism, etc. andO6are from threedifferent trifluoro-acetate-kO:kO', O4#3 from another adjacent asymmetric unit, and O4 coordinated to Ag3#1 of the unit. From the figure, we can also observe that Ag1, Ag2 and Ag3 are linked by the bridging atomsO2, O3 and O5 to form the asymmetric three nuclear unit with Ag1-O5 =2.78(2) Å; Furthermore, these three nuclear units are connected by four coordination bonds: Ag2-O1#2, Ag2#2-O1, Ag3-O4#3 and Ag3#1-O4, to form the coordination polymerwith 2D structure.

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“…Over the past two decades, different classes of coordination polymers have been successfully designed and synthesized. Recently, bridging ligands containing No r/and O, for examplemultidentate aromatic polycarboxylate [4][5][6][7][8], have been widely used forsyntheses of coordination polymers of transition metals [9][10]. In the title crystal structure, there are one cadmium ion, two nitrate ions and two 1-(4-((1H-imidazol-1-yl)methyl)benzyl)-1H-imidazolem olecules per asymmetric unit.…”

Section: Discussionmentioning

confidence: 99%

Crystal structure of bisnitrate-bis(1-(4-((1H-imidazol-1yl)methyl)- benzyl)-1H-imidazole)cadmium(II), [Cd(NO3)2(C14H14N4)2]n

Li¹,

Yang²,

Hu³

2011

Zeitschrift Für Kristallographie - New Crystal Structures

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A Novel Octupolar Metal−Organic NLO Material Based on a Chiral 2D Coordination Network

Cited by 456 publications

References 21 publications

Solvent-dependent Assembly of Discrete and Continuous CoCl2 Adamantane-based Ligand Complexes: Observations by CSI–Mass Spectrometry and X-ray Crystallography

Solvent-dependent Assembly of Discrete and Continuous CoCl2 Adamantane-based Ligand Complexes: Observations by CSI–Mass Spectrometry and X-ray Crystallography

Crystal structure of tris-(trifluoro-acetate-κO:κO')(μ-1,2-di(4-pyridyl)ethylene- κN:κN')trisilver(I), 2∞[Ag3(CF3COO)3(C12H12N2)], C18H12Ag3F9N2O6

Crystal structure of bisnitrate-bis(1-(4-((1H-imidazol-1yl)methyl)- benzyl)-1H-imidazole)cadmium(II), [Cd(NO3)2(C14H14N4)2]n

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