نتایج جستجو برای: hydrazine

تعداد نتایج: 3026  

Journal: :The journal of physical chemistry. B 2006
Qilong Liao Rina Tannenbaum Zhong Lin Wang

The present paper presents a facile and low-cost hydrothermal method to synthesize stoichiometric FeNi3 alloy nanoparticles by reducing Ni(NO3)2.6H(2)O and Fe(NO3)2.9H(2)O with hydrazine hydrate in strong alkaline media. X-ray diffraction patterns of as-prepared samples synthesized at 180 degrees C for different hydrothermal reaction times reveal that the products are pure stoichiometric FeNi3 ...

2012
Maha S. Almutairi Ali A. El-Emam Nasser R. El-Brollosy Mohammed Said-Abdelbaky Santiago García-Granda

The title mol-ecule, C(17)H(20)N(2)O, is a functionalized hydrazine with benzoyl and adamantyl substituents attached to the two hydrazine N atoms. In the crystal, mol-ecules are linked via N-H⋯N hydrogen bonds, forming chains propagating along the a-axis direction. There are also C-H⋯O, C-H⋯N and C-H⋯π inter-actions present within the chains.

Journal: :Molecular bioSystems 2009
Jonathan Swann Yulan Wang Leticia Abecia Adele Costabile Kieran Tuohy Glenn Gibson David Roberts James Sidaway Huw Jones Ian D Wilson Jeremy Nicholson Elaine Holmes

The influence of gut microbiota on the toxicity and metabolism of hydrazine has been investigated in germ-free and 'conventional' Sprague Dawley rats using 1H NMR based metabonomic analysis of urine and plasma. Toxicity was more severe in germ-free rats compared with conventional rats for equivalent exposures indicating that bacterial presence altered the nature or extent of response to hydrazi...

2014
Birandra K Sinha

Hydrazine derivatives are environmental and food pollutants but are also important because of their use in medicine for the treatment of tuberculosis and cancer. However, hydrazines also pose significant health risks to humans as they are mutagenic and carcinogenic. This review examines various metabolic pathways (enzymatic and non-enzymatic) of hydrazines for the formation of reactive species ...

2014
M. K. Usha Shobhitha Shetty B. Kalluraya Rajni Kant Vivek K. Gupta D. Revannasiddaiah

In the title compound, C12H11Cl3N2O4, the dihedral angle between the aromatic ring and the hydrazine (NH-N=C) grouping is 52.2 (3)°. The butanedioate groups exhibit planar conformations. An intra-molecular N-H⋯O hydrogen bond links the N-H group of the hydrazine to one of the meth-oxy groups of the butane-dioate moiety. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds and π-π inter...

2014
Fa Dai Fan Liu Qing Luo Chunwei Yu

A new ‘off-on’ type Al-selective fluorescent probe derived from benzoyl hydrazine has been synthesized and characterized. This probe shows high selectivity towards Al compared to other common metal ions, and complexing with Al triggers a new bond at 450 nm. With optimized conditions, the probe gives a linear response of 8.9×10–9.0 ×10M with a detection limit of 2.9×10 M Al in ethanol. Key-Words...

2013
Kiichi Amimoto Hiromitsu Nishiguchi

The crystal structure of a previously unreported polymorph (form II) of 2,4-dinitro-phenyl-hydrazine (DNPH), C6H6N4O4, was determined at 90 K. The first polymorph (form I) is described in the monoclinic space group P21/c [Okabe et al. (1993 ▶). Acta Cryst. C49, 1678-1680; Wardell et al. (2006 ▶). Acta Cryst. C62, o318-320], whereas form II is in the monoclinic space group Cc. The mol-ecular str...

Journal: :Journal of the American Chemical Society 2006
Jenny V Lockard Jeffrey I Zink Yun Luo Michael N Weaver Asgeir E Konradsson Joseph W Fowble Stephen F Nelsen

Excited-state mixed valence (ESMV) occurs in the 1,2-diphenyl-1,2-diisopropyl hydrazine radical cation, a molecule in which the ground state has a symmetrical charge distribution localized primarily on the hydrazine, but the phenyl to hydrazine charge-transfer excited state has two interchangeably equivalent phenyl groups that have different formal oxidation states. Electronic absorption and re...

2010
Shi-Quan Chen Kai Jiang Shi-Fan Wang

The title compound, C(10)H(11)N(3)O(3), was synthesized by the reaction of 3,5-bis-(ethoxy-carbon-yl)-2-formyl-4-methyl-1H-pyrrole and hydrazine hydrate. The angle between the pyrrole ring and the pyridazinone ring is 0.93 (9)°. In the crystal, inter-molecular N-H⋯O and N-H⋯N hydrogen-bond inter-actions link the mol-ecules into a two-dimensional network.

2010
Yingchun Wang

In the title mol-ecule, C(12)H(12)N(6), the dihedral angles between the pyridine rings and the central dimethan-imine-hydrazine group are 0.30 (3) and 13.94 (3)°. Two intra-molecular N-H⋯N hydrogen bonds stabilize the planar conformation of one pyridine ring with respect to its hydrazine-residue neighbour, whereas the other pyridine ring and an N-bonded H atom are rotated out of the plane and l...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید