نتایج جستجو برای: first row transition elements

تعداد نتایج: 1899872  

This paper investigates the reliability characteristics of a complex system having nine subsystems arranged in the form of 3x3 matrix in which each row contains three subsystems. The configuration of the row is of the type 2-out-of-3: F. Each subsystem has n units connected in series. The system fails if any one row containing three subsystems fails. The considered system analyzed incorporating...

Journal: :Dalton Transactions 2021

The synthesis and spectroscopic characterisation of eight new first-row transition metal (M = Cr, Mn, Fe, Co, Cu) aluminylene complexes is reported.

Journal: :The Journal of chemical physics 2010
Shiro Koseki Taka-aki Hisashima Toshio Asada Azumao Toyota Nikita Matsunaga

The potential energy surfaces of low-lying states in rhenium tetrahydride (ReH(4)) were explored by using the multiconfiguration self-consistent field (MCSCF) method together with the SBKJC effective core potentials and the associated basis sets augmented by a set of f functions on rhenium atom and by a set of p functions on hydrogen atoms, followed by spin-orbit coupling (SOC) calculations to ...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم 1393

in this thesis, structural, electronical, and optical properties of inverse pervskite(ca3pbo) in cubic phase have been investigated.the calculation have been done based on density functional theory and according to generalized gradiant approximate (gga) as correlating potential. in order to calculate the configurations, implementing in the wien2k code have been used from 2013 version. first of ...

2015
YUANHUI ZHANG HAIPENG WU BRIAN T. DENTON JAMES R. WILSON Edward P. Fitts JENNIFER M. LOBO

Models based on Markov chains are used for decision-making studies in many application domains; however , there are no widely adopted methods for performing sensitivity analysis on the associated transition probability matrices (TPMs). This article describes two simulation-based approaches for probabilistic sensitivity analysis of a given finite-state, finite-horizon, discrete-time Markov chain...

2004
P. B. Savage S. K. Holmgren J. M. Desper

Abst ra : The structure and complexation properties of macrocycles containing atoms from the second row of the periodic table (e.g., sulfur and phosphorus) have received less attention than the corresponding properties of macrocycles containing only first row atoms (e.g., oxygen and nitrogen). We describe results in two areas: macrocyclic thioethers for chelation of late transition metal ions, ...

Journal: :Dalton transactions 2016
Qingde Zhuo Zhiyong Chen Yuhui Yang Xiaoxi Zhou Feifei Han Jun Zhu Hong Zhang Haiping Xia

The first ruthenabenzothiophenes have been achieved via the C-H activation of thiophene. These species feature high thermal stability and resistance of a moderate oxidant, which constitute valuable addition to the rare metallaaromatic containing second-row transition metals.

2006
CHANG-QING MIAO JIN-CHANG GUO GUANG-MING REN

Transition metal–boron complexes BnM have been predicted at density functional theory level to be molecular bowls (n 1⁄4 8–14) hosting a transition metal atom (M) inside or molecular tires (n 1⁄4 14) centered with a transition metal atom. Small Bn clusters prove to be effective inorganic ligands to all the VB–VIIIB transition metal elements in the periodic table. Density functional evidences ob...

Journal: :Chemistry: A European Journal 2021

The reactivity of the PGeP germylene 2,2’-bis(di-isopropylphosphanylmethyl)-5,5’-dimethyldipyrromethane-1,1’-diylgermanium(II), Ge(pyrmPiPr2)2CMe2, with late first-row transition metal (Fe-Zn) dichlorides has been investigated. All reactions led to pincer chloridogermyl complexes. FeCl2 and CoCl2 afforded paramagnetic square planar complexes formula [MCl{?3P,Ge,P-GeCl(pyrmPiPr2)2CMe2}] (M=Fe, C...

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