Mitigating UVA light induced reactivity of 6-thioguanine through formation of a Ru(ii) half-sandwich complex

RSC Advances ◽  
2014 ◽  
Vol 4 (46) ◽  
pp. 24304-24306 ◽  
Author(s):  
Raja Mitra ◽  
Ashoka G. Samuelson
Keyword(s):  
Ruthenium Complexes ◽  
Sandwich Complex ◽  
Uva Light ◽  
Half Sandwich

Half-sandwich ruthenium complexes of 6-thioguanine.

Synthesis, Structure and Reactivity of the Molybdenum Cycloheptatrienyl Tetrahydroborate Complex {(η7-C7H7)Mo(η2-BH4)[P(cyclo-C6H11)3]}

2006 ◽  
Vol 61 (7) ◽  
pp. 896-903 ◽  
Author(s):  
Matthias Tamm ◽  
Bernd Dreßel ◽  
Thomas Bannenberg ◽  
Jörg Grunenberg ◽  
Eberhardt Herdtweck
Keyword(s):  
Global Minimum ◽  
Ruthenium Complex ◽  
Computational Study ◽  
Hydrolysis Product ◽  
Ruthenium Complexes ◽  
Molybdenum Atom ◽  
Sandwich Complex ◽  
Model Complexes ◽  
Half Sandwich

The reaction of the cycloheptatrienyl-toluene sandwich complex [(η7-C7H7)Mo(η6- C6H5Me)]BF4 with tricyclohexylphosphine in acetonitrile furnishes the cationic half-sandwich cycloheptatrienyl complex {(η7-C7H7)Mo[P(C6H11)3](CH3CN)2}BF4 (1). Treatment of 1 with NaBH4 in ethanol results in the formation of the tetrahydroborate complex {(η7-C7H7)Mo(η2- BH4)[P(cyclo-C6H11)3]} (2), in which the borohydride ligand is coordinated to the molybdenum atom through two three-center, two-electron bonds. The complex is stable in ethanol and water. The expected formation of a metal trihydride of the type {(η7-C7H7)MoH3[P(cyclo-C6H11)3]} as a hydrolysis product could not be observed. Since this behaviour differs from the reactivity reported for related cyclopentadienyl-ruthenium complexes, a comparative computational study on the model complexes [(η5-C5Me5)RuH3(PMe3)] (4) and [(η7-C7H7)MoH3(PMe3)] (5) was performed revealing that the classical trihydride form [MH3] represents the global minimum for the ruthenium complex 4, whereas the dihydrogen-hydride form [MH(η2-H2)] is more stable for the molybdenum counterpart.

scholarly journals Uranium(iv) cyclobutadienyl sandwich compounds: synthesis, structure and chemical bonding

2020 ◽  
Vol 56 (6) ◽  
pp. 944-947 ◽  
Author(s):  
Nikolaos Tsoureas ◽  
Akseli Mansikkamäki ◽  
Richard A. Layfield
Keyword(s):  
Chemical Bonding ◽  
Molecular Structures ◽  
Sandwich Complexes ◽  
Sandwich Complex ◽  
Sandwich Compounds ◽  
Bonding Properties ◽  
Half Sandwich

The synthesis, molecular structures and bonding properties of two uranium(iv) cyclobutadienyl half-sandwich complexes and a doubly activated cyclobutadienyl sandwich complex are described.

[(C9H7)YbI(DME)2], the First Indenyl Half-Sandwich Complex of Divalent Ytterbium

2001 ◽  
Vol 2001 (12) ◽  
pp. 3055-3058 ◽  
Author(s):  
Alexander A. Trifonov ◽  
Eugenii N. Kirillov ◽  
Sebastian Dechert ◽  
Herbert Schumann ◽  
Mikhail N. Bochkarev
Keyword(s):  
Sandwich Complex ◽  
Half Sandwich

ChemInform Abstract: Half-Sandwich Arene Ruthenium Complexes: Synthetic Strategies and Relevance in Catalysis

ChemInform ◽  
2014 ◽  
Vol 45 (15) ◽  
pp. no-no
Author(s):  
Prashant Kumar ◽  
Rakesh Kumar Gupta ◽  
Daya Shankar Pandey
Keyword(s):  
Ruthenium Complexes ◽  
Half Sandwich

Electronic structure of a beryllium half-sandwich complex, Be(η5 -C5 H5 )

2012 ◽  
Vol 112 (18) ◽  
pp. 2981-2985
Author(s):  
Olga Dolgounitcheva ◽  
V. G. Zakrzewski ◽  
J. V. Ortiz
Keyword(s):  
Electronic Structure ◽  
Sandwich Complex ◽  
Half Sandwich

Rhodamine-modified fluorescent half-sandwich iridium and ruthenium complexes: potential application as bioimaging and anticancer agents

2019 ◽  
Vol 48 (15) ◽  
pp. 4788-4793 ◽  
Author(s):  
Wenli Ma ◽  
Lihua Guo ◽  
Zhenzhen Tian ◽  
Shumiao Zhang ◽  
Xiangdong He ◽  
...  
Keyword(s):  
Mechanism Of Action ◽  
Anticancer Agents ◽  
Potential Application ◽  
Ruthenium Complexes ◽  
Anticancer Complexes ◽  
Half Sandwich

Most half-sandwich metal anticancer complexes are non-fluorescent, which results in an uncertain mechanism of action (MoA).

Optically Active Ortho-Metalated Half-Sandwich Ruthenium Complexes:  Solid-State NMR as a Convenient Tool To Analyze Mixtures of Diastereomers

2001 ◽  
Vol 40 (20) ◽  
pp. 5117-5122 ◽  
Author(s):  
Vincent Ritleng ◽  
Philippe Bertani ◽  
Michel Pfeffer ◽  
Claude Sirlin ◽  
Jérôme Hirschinger
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Ruthenium Complexes ◽  
Optically Active ◽  
Convenient Tool ◽  
Half Sandwich
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