Kay, Jack G.,Green, David W.,Duca, Karen,Zimmerman, George L.

, p. 49 - 61 (1989)

Soluble Cytotoxic Ruthenium(II) Complexes with 2-Hydrazinopyridine

Soliman,Attaby,Alajrawy,Majeed,Sahin,Varlikli

, p. 742 - 754 (2019)

New water soluble Ru(II) binary complex [Ru(C5H7N3)(X)(H2O)2] with 2-hydrazinopyridine and its ternary complexes with X = dichloride, oxalate, malonate or pyrophosphate ligands have been synthesized. The complexes have been characterized using elemental analyses, mass, IR, and UV-Vis. spectroscopies, cyclic voltammetry, magnetic susceptibility, and thermal analysis. The complexes are diamagnetic and the electronic spectral data showed that peaks are due to low spin octahedral Ru(II) complexes. The optimized structures of the complexes 1–4 indicate distorted octahedral geometry with bond angles around the ruthenium atom ranged from 80.44° to 99.64°. The values of the electronic energies (?635 to ?1145 a.u.), the highest occupied molecular orbital energies (?0.181 to 0.073 a.u.) and lowest unoccupied molecular orbital energies (?0.056 to 0.167 a.u.) indicate the stability of the complexes. The complexes are polarized as indicated from the dipole moment values (9.39–14.27 Debye). The complexes have noticeable cytotoxicity with IC50 (μM): 0.011–0.062 (HepG-2), 0.015–0.080 (MCF-7), 0.015–0.116 (HCT-116), and PC-3 (0.034–0.125).

A nickel-borate nanoarray: a highly active 3D oxygen-evolving catalyst electrode operating in near-neutral water

Ji, Xuqiang,Cui, Liang,Liu, Danni,Hao, Shuai,Liu, Jingquan,Qu, Fengli,Ma, Yongjun,Du, Gu,Asiri, Abdullah M.,Sun, Xuping

, p. 3070 - 3073 (2017)

The exploration of high-performance and cost-effective water oxidation catalysts operating under mild conditions is still urgent and challenging. In this communication, a nickel-borate nanoarray supported on carbon cloth (Ni-Bi/CC) has been fabricated through oxidative polarization of a nickel oxide nanoarray on CC (NiO/CC) in a borate electrolyte (pH 9.2). As a 3D electrode, this Ni-Bi/CC exhibits superior catalytic activity for water oxidation in 0.1 M potassium borate (K-Bi) solution, yielding a geometrical catalytic current density of 10 mA cm-2 at an overpotential of 470 mV. Notably, this electrode also demonstrates outstanding long-term electrochemical durability for 25 h with 100% Faradaic efficiency.

Photochemical Decomposition of RuO4

Zimmerman, George L.,Riviello, Sylvia J.,Glauser, Todd A.,Kay, Jack G.

, p. 2399 - 2404 (1990)

For the first time, the photochemical decomposition of gaseous RuO4 as a function of wavelenght has been studied.Two types of studies were employed: (a) irradiation with a constant-intensity mercury arc, isolating lines with filters, and (b) flash photolysis and kinetic absorption spectroscopy using a xenon flash lamp and liquid solution filters.The steady mercury arc irradiation gave quantum yields as a function of wavelength, and the flash photolysis experiments gave spectra of previously unreported products.Photochemical reactions of RuO4 have been determined for three spectral regions: (I) 440 - 370, (II) 370 - 320, and (III) 320 - 240 nm.For (I) the product is a solid, thin film of RuO3 deposited on the cell wall, and the quantum yield is 0.05; for (II) the product is a solid RuO2 aerosol with submicron-sized particles, and the quantum yields are 1.0 - 1.2; for (III) both RuO3 and RuO2 are formed simultaneously in the forms described above, and in addition, on a microsecond time scale, absorption spectra of gaseous RuO and Ru are observed.These results are interpreted in terms of two thresholds for predissociation or, more likely, vibrationally hot molecule dissociation, one at ca. 370 nm for dissociation to O2 and RuO2 and another at ca 320 nm for breaking a single Ru-O bond.The observed threshold energies agree well with thermodynamic estimates.The production of RuO and Ru species is attributed to secondary dark reactions involving O atoms.

Razivnas, V.,Macur, G.,Katz, S.

, p. 1010 - 1015 (1965)

Synthesis, spectral, thermal, X-ray single crystal of new RuCl 2(dppb)diamine complexes and their application in hydrogenation of Cinnamic aldehyde

Warad, Ismail,Al-Hussain, Hanan,Al-Far, Rawhi,Mahfouz, Refaat,Hammouti, Belkheir,Hadda, Taibi Ben

, p. 374 - 381 (2012/07/14)

The preparation of new three trans-[RuCl2(dppb)(N-N)] with mixed diamine (N-N) and 1,4-bis-(diphenylphosphino)butane (dppb) ligands, starting from RuCl2(PPh3)3 as precursor is presented. The complexes are charac