The structural characterization of tetranuclear cage-type cadmium(II) carboxylate [Cd4(2-cpida)2(2,2′-bpy)6]·(2,2-bpy)·(ClO4)·3H2O (1) (2-H3cpida&nbsp;=&nbsp;N-(2-carboxyphenyl)iminodiacetic acid, 2,2′-bpy&nbsp;=&nbsp;2,2′-bipyridine) is described. H-bonding interactions between three lattice water molecules form a V-shaped trimer (H2O)3, which is stabilized by 1. In addition, luminescence investigations revealed that 1 shows enhanced emissions as compared with free 2-H3cpida in the liquid state.

Palanisami N

Department of Chemistry

School of Advanced Sciences

Vellore Campus

Senthil Kumar K

Department of Computer Applications

School of Information Technology and Engineering

Mohan G

Moon I.-S.

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Structural and luminescent properties of a tetranuclear cage-type cadmium(II) carboxylate cluster containing a V-shaped water trimer

Journal of Coordination Chemistry

A mixed Ni(II) ionic complex of {[Ni(2,2′-bpy)3][Ni(2-cpida)(2,2′-bpy)]}(ClO4).3H2O (1) (2-H3cpida = N-(2-carboxyphenyl)iminodiacetic acid, 2,2′-bpy = 2,2′-bipyridyl) has been synthesized and characterized by infrared, ultraviolet and fluorescence spectroscopy, elemental and thermogravimetric analysis. The molecular structure of compound 1, as determined by single-crystal X-ray diffraction studies, showed all the three carboxylate groups are in monodendate mode. Compound 1 consists of a discrete mononuclear [Ni(2,2′-bpy)3]2+ cation, a [Ni(2-cpida)(2,2′-bpy)]− anion, a ClO@ anion and three lattice water molecules. The H-bonding interaction between three lattice water molecule forms a V-shaped trimer (H2O)3 which gives rise to a 1-D polymeric structure in the solid state. Graphical Abstract A mixed ionic complex of Ni(II) contains V-shaped water trimer (H2O)3 through inter molecular hydrogen bonding interactions.

Fulltext

Journal of Chemical Sciences

A mixed Ni(II) ionic complex containing V-shaped water trimer: Synthesis, spectral, structural and thermal properties of {[Ni(2,2′-bpy)3][Ni(2-cpida)(2,2′ -bpy)]} (ClO4).3H2O

A mononuclear copper(II) <a href="https://www.sciencedirect.com/topics/chemistry/salicylate">salicylate</a> with bulky substitution [Cu(DTBSA)2(2,2′-bpy)](dmf) (1) (DTBSA&nbsp;=&nbsp;3,5-di-tert-butyl <a href="https://www.sciencedirect.com/topics/chemistry/salicylic-acid">salicylic acid</a>, 2,2′-bpy&nbsp;=&nbsp;2,2′-bipyridyl) has been synthesized and characterized with the aid of <a href="https://www.sciencedirect.com/topics/chemistry/elemental-analysis">elemental analysis</a> and infrared, ultraviolet, fluorescence and <a href="https://www.sciencedirect.com/topics/chemistry/epr-spectroscopy">electron paramagnetic resonance</a> spectroscopic techniques. The molecular structure of compound 1 was analyzed by <a href="https://www.sciencedirect.com/topics/biochemistry-genetics-and-molecular-biology/single-crystal-x-ray-diffraction">single-crystal X-ray diffraction</a>, it shows monomeric copper atom coordinating to two salicylate moieties along with one bipridyl ligand. Hydrogen bonding interactions and π–π aromatic stacking interactions led to the formation of 1D polymeric structure. The <a href="https://www.sciencedirect.com/topics/biochemistry-genetics-and-molecular-biology/dna-binding">DNA binding</a> studies of compound 1 against CT-DNA (calf thymus) investigated by absorption, emission and <a href="https://www.sciencedirect.com/topics/biochemistry-genetics-and-molecular-biology/docking-molecular">molecular docking</a> methods. The results from <a href="https://www.sciencedirect.com/topics/biochemistry-genetics-and-molecular-biology/binding-affinity">binding constant</a> (Kb), linear Stern–Volmer quenching constant (Ksv) and molecular docking have shown that the copper(II) salicylate has better binding activity.

Inorganic Chemistry Communications

Synthesis, crystal structure, DNA binding and molecular docking studies on new copper(II) salicylate [Cu(DTBSA)2(2,2′-bpy)](dmf)

Mononuclear zinc carboxylates [Zn(L)(2,2′-bpy)2](ClO 4)(nH2O) (1-4) (LH = 3-aminobenzoic acid (3-abaH) (1), salicylic acid (saH2) (2), 3,5-diisopropylsalicylic acid (dipsaH 2) (3), and 3-methyl-2-thiophenecarboxylic acid (3-Me-2-TCAH) (4)) and cadmium carboxylates [Cd(tipba)(2,2′-bpy)2](tipbaH) (5) (tipaH = 2,4,6-triisopropylbenzoic acid), [Cd(2,2′-bpy) 2(2-TCA)(ClO4)] (6) (2-TCAH = thiophene-2-carboxylic acid) and [{Cd(2,2′-bpy)2(3-Me-2-TCA)}{Cd(2,2′-bpy) 2(3-Me-2-TCA)(H2O)}](ClO4)2 (7) have been synthesized from the reaction of the metal precursor complex [M(OAc)(2,2′-bpy)2](ClO4)(H2O) (M = Zn and Cd) with the respective aromatic carboxylic acid in methanol at ambient conditions. Complexes 1-7 have been characterized with the aid of elemental analysis and FT-IR, UV-Vis, fluorescence, 1H NMR spectroscopic methods and further analyzed by single-crystal X-ray diffraction studies. The carboxylate groups show chelating and monodentate coordination behavior in these complexes. While the cadmium ion in 6 is heptacoordinated, the structure of 5 reveals a coordination number of eight with square antiprismatic geometry. Hydrogen bonding patterns in 1-4 and 7 result in a 1-D polymeric structure while 5 is a 2-D layer structure and 6 is a 3-D polymeric structure. © 2013 The Authors.

Inorganica Chimica Acta

Non-covalently aggregated zinc and cadmium complexes derived from substituted aromatic carboxylic acids: Synthesis, spectroscopy, and structural studies

The Journal of Physical Chemistry A

Dual Emission of a Novel (P,N) ReIComplex: A Computational and Experimental Study on [P,N-{(C6H5)2(C5H4N)P}Re(CO)3Br]

Synthesis, crystal structure, and photophysical properties of a double open cubane-like Cd(II) complex based on 2-substituted-8-hydroxyquinoline

Journal	Journal of Coordination Chemistry
Publisher	Informa UK Limited
ISSN	0095-8972
Open Access	0