Cyclopentadienyl−Hydrazido Titanium Complexes: Tuning of Coordination Modes of Hydrazido Ligands to the Titanium Center

1999 ◽  
Vol 18 (11) ◽  
pp. 2049-2051 ◽  
Author(s):  
Sung Cheol Yoon ◽  
Byoung-Jae Bae ◽  
Il-Hwan Suh ◽  
Joon T. Park
Keyword(s):  
Titanium Complexes ◽  
Coordination Modes ◽  
Titanium Center

The structure of [Cu(bipy)3][Cu(bipy)(ala)(ClO4)2]ClO4 � a Compound with Two Different Coordination Modes in the same Complex

2008 ◽  
Vol 59 (11) ◽  
Author(s):  
Mircea Braban ◽  
Ionel Haiduc
Keyword(s):  
Solid State ◽  
Chelate Ring ◽  
Octahedral Complex ◽  
State Structure ◽  
Complex Species ◽  
Solid State Structure ◽  
Coordination Modes ◽  
Coordination Center ◽  
Self Assembled ◽  
Chelate Rings

The paper describes the solid state structure of a compound of composition [Cu(bipy)3][Cu(bipy)(ala) (ClO4)2]ClO4, in which both the cation and anion are octahedral complex species with copper(II) as coordination center. The cation contains three chelate rings formed by bipy; the anion contains in the quatorial plane a CuONC2 chelate ring formed by the alaninato ligand and a CuN2C2 chelate ring formed by bipy, with two monodentate perchorato ligands in axial positions completing the six-coordination. In the crystal p-p stackings lead to a supramolecular self-assembled structure.

Synthesis, Spectral Characterization, Antibacterial and Anticancer Activity of some Titanium Complexes

2018 ◽  
Vol 18 (5) ◽  
pp. 739-746 ◽  
Author(s):  
Raj Kaushal ◽  
Nitesh Kumar ◽  
Archana Thakur ◽  
Kiran Nehra ◽  
Pamita Awasthi ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Cell Death ◽  
Anticancer Activity ◽  
Cell Lines ◽  
Spectral Characterization ◽  
Mechanistic Study ◽  
Titanium Complexes ◽  
G0 Phase ◽  
Antibacterial And Anticancer Activity ◽  
Dose Dependent

Abstract: Background: After the discovery of cisplatin, first non platinum anticancer drugs having excellent efficacy were budotitane and TiCl2(cp)2 but action mechanism is not clear. Therefore, we hereby reporting synthesis and biological activities novel titanium complexes to explore their mode of action. Objectives: Synthesis, spectral characterization, antibacterial and anticancer activity of some titanium complexes. Antibacterial studies on various bacterial strains and anticancer studies on HeLa, C6, CHO cancerous cell lines have been performed. Further, the cell death mechanistic study was done on CHO cell lines. Method: Titanium complexes with and without labile groups have been synthesized by reacting of TiCl4 with nitrogen containing ligands viz. 1,2-diaminocyclohexane, 1,10-Phenanthroline, adamantylamine, 2,2'-bipyridine, 4,4'-dimethyl-2,2'-bipyridine in predetermined molar ratios. Antibacterial and anticancer studies were performed by agar well diffusion method and MTT assay respectively. Cell cycle analysis is done by using flow cytometry. Results: Complex 2 i.e TiCl2(Phen)2 showed better activity than other complexes as an antibacterial as well as anticancer agent. Phase contrast imaging indicates that observed morphological changes of cells was dose dependent. Cell death mechanistic study have shown the increase in sub G0 phase population as well as formation of blebbing and fragmentation of chromatin material which is an indicative measure of apoptosis. Conclusion: Complex 2 proved to be more effective bactericide and cytotoxic agent. Cell cycle analysis showed cell arrest in G0 phase. Apoptosis percentage was found to increase in a dose dependent manner. So, prepared titanium complexes can be put to use as an important chemotherapeutic agents.

scholarly journals Titanium Complexes with Functional Alkoxido Ligands for Selective Ethylene Dimerization – A High Throughput Experimentation Approach

ChemCatChem ◽  
2021 ◽  
Author(s):  
Fabien L. Grasset ◽  
Richard Welter ◽  
Pierre Braunstein ◽  
Hélène Olivier‐Bourbigou ◽  
Lionel Magna
Keyword(s):  
High Throughput ◽  
Titanium Complexes ◽  
Ethylene Dimerization ◽  
High Throughput Experimentation

The versatile coordination chemistry of 1,3-benzenedicarboxylate in the last 20 years: An investigation from the coordination modes to spectroscopic insights

Polyhedron ◽  
2021 ◽  
Vol 198 ◽  
pp. 115068
Author(s):  
Isabelle K.V. Gonçalves ◽  
Willian X.C. Oliveira ◽  
Filipe B. de Almeida ◽  
Maria Vanda Marinho ◽  
Walace D. do Pim ◽  
...  
Keyword(s):  
Coordination Chemistry ◽  
Coordination Modes

Endo- and exohedral chloro-fulleride as η5 ligands: A DFT study on the first-row transition metal complexes

2021 ◽  
Author(s):  
Sebastian Anila ◽  
Cherumuttathu Hariharan Suresh
Keyword(s):  
Transition Metal ◽  
Transition Metals ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Dft Study ◽  
C60 Fullerene ◽  
Ring Fusion ◽  
Coordination Modes

C60 fullerene coordinates to transition metals in η2-fashion through its C-C bond at [6,6] ring fusion whereas other coordination modes η3, η4, η5 and η6 are rarely observed. The coordination...

scholarly journals Copper(ii) complexes of N-propargyl cyclam ligands reveal a range of coordination modes and colours, and unexpected reactivity

2021 ◽  
Author(s):  
Andrew J. Counsell ◽  
Mingfeng Yu ◽  
Mengying Shi ◽  
Angus T. Jones ◽  
James M. Batten ◽  
...  
Keyword(s):  
Enol Ether ◽  
Coordination Modes

Copper(ii) complexes of cyclam ligands with 1, 2, 3 or 4 pendant alkynes have been prepared and characterised crystallographically and spectroscopically. An unexpected hydroalkoxylation reaction is observed, affording an enol ether from the alkyne.

scholarly journals An exhibition of different coordination modes displayed by 2-vinylpyrazine and 2-vinylpyridine at triosmium centres

2017 ◽  
Vol 849-850 ◽  
pp. 80-87 ◽  
Author(s):  
Md. Rafique Al-Mamun ◽  
Shishir Ghosh ◽  
Shariff E. Kabir ◽  
Graeme Hogarth
Keyword(s):  
Coordination Modes

scholarly journals Syntheses, characterization, and antibacterial study of titanium complexes

2013 ◽  
Vol 37 ◽  
pp. 936-945 ◽  
Author(s):  
Raj KAUSHAL ◽  
Nitesh KUMAR ◽  
Pamita AWASTHI ◽  
Kiran NEHRA
Keyword(s):  
Titanium Complexes ◽  
Antibacterial Study
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