New structural motifs in Mn cluster chemistry from the ketone/gem-diol and bis(gem-diol) forms of 2,6-di-(2-pyridylcarbonyl)pyridine: {MnII4MnIII2} and {MnII4MnIII6} complexes

RSC Advances ◽  
2016 ◽  
Vol 6 (107) ◽  
pp. 105969-105979 ◽  
Author(s):  
Dimosthenis P. Giannopoulos ◽  
Luís Cunha-Silva ◽  
Rafael Ballesteros-Garrido ◽  
Rafael Ballesteros ◽  
Belén Abarca ◽  
...  
Keyword(s):  
Structural Motifs ◽  
Cluster Chemistry ◽  
Mn Cluster

The ketone/gem-diol (L1H2) and bis(gem-diol) (L2H4) forms of the ligand 2,6-di-(2-pyridylcarbonyl)pyridine in Mn cluster chemistry have afforded the new complexes [MnII4MnIII2(N3)6Cl4(L1)2(DMF)4] and [MnII4MnIII6O2(N3)12(L1)2(L2H)2(DMF)6].

scholarly journals Isomerisation of nido-[C2B10H12]2− dianions: unprecedented rearrangements and new structural motifs in carborane cluster chemistry

2015 ◽  
Vol 6 (5) ◽  
pp. 3117-3128 ◽  
Author(s):  
David McKay ◽  
Stuart A. Macgregor ◽  
Alan J. Welch
Keyword(s):  
Dft Calculations ◽  
Structural Motifs ◽  
Cluster Chemistry

The formation and isomerisation of nido-[C2B10H12]2− species is investigated through DFT calculations, which reveal novel basket and inverted nido intermediates and unusual inverconversion pathways, including basket collapse and pivoting triangles and diamonds.

“Depolymerization” Approach in Mn Cluster Chemistry: Controlled Cleavage of a 1D Coordination Polymer Consisting of Mn8Units in Its Constituent, Discrete Mn8Complex

2010 ◽  
Vol 49 (2) ◽  
pp. 359-361 ◽  
Author(s):  
Constantinos C. Stoumpos ◽  
Olivier Roubeau ◽  
Guillem Aromí ◽  
Anastasios J. Tasiopoulos ◽  
Vassilios Nastopoulos ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Cluster Chemistry ◽  
1D Coordination Polymer ◽  
Mn Cluster

Manganese (III) fluoride as a new synthon in Mn cluster chemistry

Polyhedron ◽  
2005 ◽  
Vol 24 (16-17) ◽  
pp. 2443-2449 ◽  
Author(s):  
Leigh F. Jones ◽  
Jim Raftery ◽  
Simon J. Teat ◽  
David Collison ◽  
Euan K. Brechin
Keyword(s):  
Cluster Chemistry ◽  
Mn Cluster

High-Nuclearity Ce/Mn and Th/Mn Cluster Chemistry:  Preparation of Complexes with [Ce4Mn10O10(OMe)6]18+and [Th6Mn10O22(OH)2]18+Cores

2007 ◽  
Vol 46 (8) ◽  
pp. 3105-3115 ◽  
Author(s):  
Abhudaya Mishra ◽  
Anastasios J. Tasiopoulos ◽  
Wolfgang Wernsdorfer ◽  
Khalil A. Abboud ◽  
George Christou
Keyword(s):  
Cluster Chemistry ◽  
Mn Cluster

Recent Advances in Therapeutic Applications of Bisbenzimidazoles

2020 ◽  
Vol 16 (4) ◽  
pp. 454-486 ◽  
Author(s):  
Smita Verma ◽  
Vishnuvardh Ravichandiran ◽  
Nihar Ranjan ◽  
Swaran J.S. Flora
Keyword(s):  
Heterocyclic Compounds ◽  
Wide Spectrum ◽  
Dna Recognition ◽  
Present Review ◽  
Pharmacological Activities ◽  
Structural Motifs ◽  
Therapeutic Applications ◽  
The Past ◽  
Recent Advances

Nitrogen-containing heterocycles are one of the most common structural motifs in approximately 80% of the marketed drugs. Of these, benzimidazoles analogues are known to elicit a wide spectrum of pharmaceutical activities such as anticancer, antibacterial, antiparasitic, antiviral, antifungal as well as chemosensor effect. Based on the benzimidazole core fused heterocyclic compounds, crescent-shaped bisbenzimidazoles were developed which provided an early breakthrough in the sequence-specific DNA recognition. Over the years, a number of functional variations in the bisbenzimidazole core have led to the emergence of their unique properties and established them as versatile ligands against several classes of pathogens. The present review provides an overview of diverse pharmacological activities of the bisbenzimidazole analogues in the past decade with a brief account of its development through the years.

Macropolyhedral Boron-Containing Cluster Chemistry. A Metallathiaborane from S2B17H17: Isolation and Characterisation of [(PMe2Ph)2PtS2B16H16]; A neo-arachno Ten-Vertex Cluster Shape, and the Constitution of the [arachno-B10H15]- Anion

2005 ◽  
Vol 70 (4) ◽  
pp. 430-440 ◽  
Author(s):  
Michael J. Carr ◽  
Michael G. S. Londesborough ◽  
Jonathan Bould ◽  
Ivana Císařová ◽  
Bohumil Štíbr ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Sodium Hydride ◽  
Hydrogen Atoms ◽  
Subsequent Reaction ◽  
Cluster Chemistry ◽  
Cluster Shape ◽  
Open Face

The deprotonation of S2B17H17 with sodium hydride and subsequent reaction with [PtCl2(PMe2Ph)2] gives the new macropolyhedral metallathiaborane [(PMe2Ph)2PtS2B16H16], of which the cluster consists of a conventional eleven-vertex nido {SB10} unit, fused, with two boron atoms in common, with a {PtSB8} unit of unique ten-vertex neo-arachno constitution and geometry. The latter geometry suggests a configuration for the previously structurally uncharacterised [B10H15]- anion; starting from this configuration, DFT calculations of structure and thence of boron nuclear shieldings, which are found very closely to mimic those found experimentally, thence support a fluxional structure for [B10H15]- with three {BHB(bridging)} and two {BH(endo)} hydrogen atoms around a six-membered open face.

scholarly journals Diverse Antibody Responses to Conserved Structural Motifs in Plasmodium falciparum Circumsporozoite Protein

2020 ◽  
Vol 432 (4) ◽  
pp. 1048-1063 ◽  
Author(s):  
Tossapol Pholcharee ◽  
David Oyen ◽  
Jonathan L. Torres ◽  
Yevel Flores-Garcia ◽  
Gregory M. Martin ◽  
...  
Keyword(s):  
Plasmodium Falciparum ◽  
Antibody Responses ◽  
Circumsporozoite Protein ◽  
Structural Motifs
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