Synthesis and Crystal Structures of Two Monomeric Zinc(II) Complexes Containing Carboxylate and Aqua Ligands

1997 ◽  
Vol 50 (8) ◽  
pp. 865 ◽  
Author(s):  
Xiao-Ming Chen ◽  
Xiao-Chun Huang ◽  
Ming-Liang Tong ◽  
Ye-Xiang Tong ◽  
Seik Weng Ng
Keyword(s):  
Structural Analysis ◽  
Single Crystal ◽  
Crystal Structures ◽  
Active Sites ◽  
Aqua Ligand ◽  
Zinc Atom ◽  
Tetrahedral Geometry ◽  
Distorted Tetrahedral Geometry ◽  
Carboxylate Groups ◽  
Crystal Structural

Two monomeric zinc(II) complexes of betaine (Me3N+CH2CO2¯ = bet), [Zn(bet)2(H2O)Cl] (ClO4) (1) and [Zn(bet)3(H2O)] (ClO4)2 (2), have been prepared and characterized by single-crystal structural analysis. The zinc atom in both complexes is coordinated in a distorted tetrahedral geometry: the zinc atom in complex (1) is surrounded by one aqua ligand (Zn–O 1·979(3) Å), one chloro ligand (Zn–Cl 2·218(1) Å ) and two monodentate carboxylate groups (Zn–O 1·946(2) Å); the zinc atom in complex (2) is ligated by one aqua ligand (Zn–O 1·997(6) Å) and three monodentate carboxylategroups (Zn–O 1·943(5)–2·106(8) Å). In both complexes, the aqua ligand forms strong donor hydrogenbonds with adjacent carboxylate oxygens (for complex (1), O · · · O is 2·689(2) Å; for complex (2), O · · · O are 2·67(1) and 2·709(8) Å); these interactions are discussed in the context of zinc complexesand enzyme active sites.

scholarly journals Synthesis, Crystal Structures, Characterization and Catalytic Property of Manganese(II) Complexes Derived from Hydrazone Ligands

2020 ◽  
Vol 67 (4) ◽  
pp. 1233-1238
Author(s):  
Yao Tan
Keyword(s):  
Structural Analysis ◽  
Single Crystal ◽  
Crystal Structures ◽  
Catalytic Property ◽  
Octahedral Coordination ◽  
Chemical Methods ◽  
X Ray ◽  
Physico Chemical ◽  
Crystal Structural ◽  
Hydrazone Ligands

A new bromido-coordinated mononuclear manganese(II) complex [MnL1Br2(OH2)] (1), and a new nitrato-coordinated mononuclear manganese(II) complex [Mn(L2)2(ONO2)(OH2)]NO3 (2), with the hydrazone ligands 4-hydroxy-N’-(pyridin-2-ylmethylene)benzohydrazide (HL1) and N’-(pyridin-2-ylmethylene)isonicotinohydrazide (HL2), have been synthesized and structurally characterized by physico-chemical methods and single crystal X-ray determination. Single crystal structural analysis shows that the Mn atom in complex 1 is in octahedral coordination, and that in complex 2 is in pentagonal bipyramidal coordination. The catalytic property for epoxidation of styrene by the complexes was evaluated.

scholarly journals Crystal structures and Hirshfeld surface analyses of bis[N,N-bis(2-methoxyethyl)dithiocarbamato-κ2S,S′]di-n-butyltin(IV) and [N-(2-methoxyethyl)-N-methyldithiocarbamato-κ2S,S′]triphenyltin(IV)

2018 ◽  
Vol 74 (3) ◽  
pp. 302-308 ◽  
Author(s):  
Rapidah Mohamad ◽  
Normah Awang ◽  
Nurul Farahana Kamaludin ◽  
Mukesh M. Jotani ◽  
Edward R. T. Tiekink
Keyword(s):  
Crystal Structures ◽  
Metal Atom ◽  
Three Dimensional ◽  
Hirshfeld Surface ◽  
Molecular Structures ◽  
Site Symmetry ◽  
Tetrahedral Geometry ◽  
Twofold Axis ◽  
Distorted Tetrahedral Geometry ◽  
Crystal And Molecular Structures

The crystal and molecular structures of the two title organotin dithiocarbamate compounds, [Sn(C4H9)2(C7H14NO2S2)2], (I), and [Sn(C6H5)3(C5H10NOS2)], (II), are described. Both structures feature asymmetrically bound dithiocarbamate ligands leading to a skew-trapezoidal bipyramidal geometry for the metal atom in (I) and a distorted tetrahedral geometry in (II). The complete molecule of (I) is generated by a crystallographic twofold axis (Sn site symmetry 2). In the crystal of (I), molecules self-assemble into a supramolecular array parallel to (10-1)viamethylene-C—H...O(methoxy) interactions. In the crystal of (II), supramolecular dimers are formedviapairs of weak phenyl-C—H...π(phenyl) contacts. In each of (I) and (II), the specified assemblies connect into a three-dimensional architecture without directional interactions between them. Hirshfeld surface analyses confirm the importance of H...H contacts in the molecular packing of each of (I) and (II), and in the case of (I), highlight the importance of short methoxy-H...H(butyl) contacts between layers.

scholarly journals Crystal structure and Hirshfeld surface analysis of poly[[di-μ3-glycine-lithium] perchlorate]

2019 ◽  
Vol 75 (2) ◽  
pp. 134-138
Author(s):  
Palanisamy Revathi ◽  
Janani S. Mohan ◽  
Thangavelu Balakrishnan ◽  
Kandasamy Ramamurthi ◽  
Subbiah Thamotharan
Keyword(s):  
Surface Analysis ◽  
Crystal Packing ◽  
Lithium Perchlorate ◽  
Hirshfeld Surface ◽  
Hirshfeld Surface Analysis ◽  
Tetrahedral Geometry ◽  
Distorted Tetrahedral Geometry ◽  
Zwitterionic Form ◽  
Carboxylate Oxygen ◽  
Carboxylate Groups

In the title salt, {[Li(C2H5NO2)2]ClO4} n , the Li+ cation is coordinated by four carboxylate oxygen atoms of the glycine molecules with a distorted tetrahedral geometry. The glycine exists in a zwitterionic form with protonated amino and deprotonated carboxylate groups. In the crystalline state, the title salt is primarily stabilized by intermolecular N—H...O and Cα—H...O interactions which interconnect various units. Hirshfeld surface analysis indicates that the intermolecular H...O/O...H interactions are the most important contributors to the crystal packing.

scholarly journals An organic-inorganic hybrid double perovskite-type cage-like crystal (MA)2KBiCl6 (MA = methylammonium Cation) with dielectric switch behavior

2021 ◽  
Author(s):  
Lin Xiang ◽  
Yi-Fang Huang ◽  
Yan Feng ◽  
Na Wang ◽  
Rong-Meng Liao ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Structural Analysis ◽  
Single Crystal ◽  
Structural Phase ◽  
Double Perovskite ◽  
Structural Phase Transitions ◽  
Inorganic Hybrid ◽  
Crystal Structural ◽  
Perovskite Type

An organic-inorganic hybrid double perovskite-type cage-like crystal, (MA)2KBiCl6 (MA = methylammonium Cation, 1), was synthesized. It undergoes structural phase transitions at 336/326 K (heating/cooling). Various-temperature single-crystal structural analysis reveal that...

Ion-bearing stairs: alkali metal complexes of 1,2-diaza-4-phospholide

2022 ◽  
Author(s):  
Minggang Zhao ◽  
Ru-Ru He ◽  
Tingting Xue ◽  
Jian-ping Ma ◽  
Wenjun Zheng
Keyword(s):  
Nmr Spectroscopy ◽  
Structural Analysis ◽  
Alkali Metal ◽  
Metal Complexes ◽  
Single Crystal ◽  
X Ray ◽  
Crystal Structural ◽  
Alkali Metal Complexes

Several of alkali metal complexes with 1,2-diaza-4-phospholide ligands were prepared and characterized by X-ray single crystal structural analysis and the NMR spectroscopy. Their structures showed varied coordination motifs: i) A...

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