Author
Guang-Chuan Ou
Bio: Guang-Chuan Ou is an academic researcher from Hunan University of Science and Engineering. The author has contributed to research in topics: Perchlorate & Coordination geometry. The author has an hindex of 4, co-authored 30 publications receiving 57 citations.
Topics: Perchlorate, Coordination geometry, Tetra, Nickel, Hydrogen bond
Papers
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TL;DR: In this article, a good water-soluble macrocycle containing two pyridinium moieties was synthesized in high yield, which can selectively encapsulate naphthalene to form a 1:1 complex over a variety of polycyclic aromatic hydrocarbons.
15 citations
TL;DR: Two dinuclear succinato-bridged nickel(II) complexes were synthesized and characterized by EA, Circular dichroism (CD), as well as IR and UV/Vis spectroscopy as discussed by the authors.
Abstract: Two dinuclear succinato-bridged nickel(II) complexes [Ni(RR-L)]2(μ-SA)(ClO4)2 (1) and [Ni(SS-L)]2(μ-SA)(ClO4)2 (2) (L = 5, 5, 7, 12, 12, 14-hexamethyl-1, 4, 8, 11-tetraazacyclotetradecane, SA = succinic acid) were synthesized and characterized by EA, Circular dichroism (CD), as well as IR and UV/Vis spectroscopy Single crystal X-ray diffraction analyses revealed that the NiII atoms display a distorted octahedral coordination arrangement, and the succinato ligand bridges two central NiII atoms in a bis bidentate fashion to form dimers in 1 and 2 The monomers of {[Ni(RR-L)]2(μ-SA)}2+ and {[Ni(SS-L)]2(μ-SA)}2+ are connected by O–H···O and N–H···O hydrogen bonds into a 1D right-handed and left-handed helical chain along the b axis, respectively The homochiral natures of 1 and 2 are confirmed by the results of CD spectroscopy
10 citations
TL;DR: In this paper, the reaction of a racemic four-coordinate Ni(II) complex [Ni(rac-L)](ClO4)2 with l- and d-alanine in acetonitrile/water gave two sixcoordinate enantiomers formulated as Ni(RR-L)(l-Ala) and ClO4·2CH3CN, respectively.
Abstract: The reactions of a racemic four-coordinate Ni(II) complex [Ni(rac-L)](ClO4)2 with l- and d-alanine in acetonitrile/water gave two six-coordinate enantiomers formulated as [Ni(RR-L)(l-Ala)](ClO4)·2CH3CN (1) and [Ni(SS-L)(d-Ala)](ClO4) (2) (L = 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclo-tetradecane, Ala− = alanine anion), respectively. Evaporation from the remaining solutions gave two four-coordinate enantiomers characterized as [Ni(SS-L)](ClO4)2 (S-3) and [Ni(RR-L)](ClO4)2 (R-3), respectively. Single-crystal X-ray diffraction analyses of complexes 1 and 2 revealed that the Ni(II) atom has a distorted octahedral coordination geometry, being coordinated by four nitrogen atoms of L in a folded configuration, plus one carboxylate oxygen atom and one nitrogen atom of l- or d-Ala− in mutually cis-positions. Complexes 1 and 2 are supramolecular stereoisomers, constructed via hydrogen bonding between [Ni(RR-L)(l-Ala)]+ or [Ni(SS-L)(d-Ala)]+ monomers to form 1D hydrogen-bonded zigzag chains. The homochiral natures of complexes 1 and 2 have been confirmed by CD spectroscopy.
8 citations
TL;DR: In this article, a self-assembled macrocyclic-like dimer was constructed from 1, 8-naphthalimide-based tweezer-liked building block.
7 citations
TL;DR: The Ni atom in the title salt, [Ni(C7H5O2)(C16H36N4)]ClO4·H2O, is in a six-coordinate octahedral geometry.
Abstract: The Ni atom in the title salt, [Ni(C7H5O2)(C16H36N4)]ClO4·H2O, is in a six-coordinate octahedral geometry. The metal atom is chelated by the carboxylate group, and the macrocyclic ligand adopts a folded configuration. The cation, anion and water molecules engage in hydrogen bonding to form a layer structure.
5 citations
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TL;DR: An overview of new natural products from marine-derived fungi and their biological activities, focusing on the period from 2006 until mid-2010, with a considerable number of which display promising biological and pharmacological properties.
555 citations
TL;DR: The aim of this paper is to give an overview of the structural diversity of terpenes from marine-derived fungi, highlighting individual examples of chemical structures and placing them in a context of other Terpenes of fungal origin.
Abstract: Terpenes from marine-derived fungi show a pronounced degree of structural diversity, and due to their interesting biological and pharmacological properties many of them have aroused interest from synthetic chemists and the pharmaceutical industry alike. The aim of this paper is to give an overview of the structural diversity of terpenes from marine-derived fungi, highlighting individual examples of chemical structures and placing them in a context of other terpenes of fungal origin. Wherever possible, information regarding the biological activity is presented.
77 citations
TL;DR: This work reviews the production of terpenoid by endophytic fungi and their biological activities, in period of 2006 to 2010, when 127 terpenoids were isolated from endophytics fungi.
Abstract: This work reviews the production of terpenoids by endophytic fungi and their biological activities, in period of 2006 to 2010. Sixty five sesquiterpenes, 45 diterpenes, five meroterpenes and 12 other terpenes, amounting to 127 terpenoids were isolated from endophytic fungi.
77 citations
TL;DR: In this article, the recent developments of macrocyclic host molecules with aromatic building blocks were summarized and discussed, and the structural features and recognition ability of these molecules were determined by the building blocks and their connection patterns.
27 citations