نتایج جستجو برای: n hexane

تعداد نتایج: 977930  

2008
Jun Yang Qing-Rong Qi Wen-Cai Huang Hu Zheng

The title compound, C(14)H(18)O(3), is an important model compound in the synthesis of phenolic ethers. The cyclo-hexane ring adopts a chair conformation. In the crystal structure, adjacent mol-ecules are linked by O-H⋯O hydrogen bonds.

2010
Muhammad Saleh Salga Hamid Khaledi Hapipah Mohd Ali Rustam Puteh

In the title compound, C(20)H(24)N(4), the cyclo-hexane ring adopts a chair conformation with the two imine groups linked at equatorial positions. The two halves of the mol-ecule are related by a crystallographic twofold rotation axis. The dihedral angle between the pyridine rings is 75.73 (3)°.

2008
Aamer Saeed Rasheed Ahmad Khera Naeem Abbas Ulrich Flörke

In the title mol-ecule, C(13)H(16)FNO, the amide (N-C=O) plane is oriented at an angle of 29.9 (2)° with respect to the aromatic ring. The cyclo-hexane ring adopts the usual chair conformation. In the crystal structure, inter-molecular N-H⋯O hydrogen bonds link the mol-ecules into chains along [100]. A weak C-H⋯F inter-action is also observed. The F atom is disordered over two positions with oc...

2011
D. Sophia P. Ragavendran C. Arulraj V. K. Gopalakrishnan

The free radical scavenging activities of n-hexane extract of the whole plant of Emilia sonchifolia was evaluated by employing various in vitro assay systems like DPPH radical scavenging activity, superoxide radical scavenging activity and hydrogen peroxide scavenging activity with IC50 values 180, 160 and 160 μg/ml respectively. The results of the study indicate that the n-hexane extract of th...

2008
De-Hong Jiang Zhi-Hua Mao Hu Zheng

The title compound, C(15)H(20)O(5)S, is an inter-mediate in the synthesis of novel amino-carboxylic acid derivatives. The cyclo-hexane ring exhibits a chair conformation. In the crystal structure, adjacent mol-ecules form dimers via O-H⋯O hydrogen bonds.

2011
Sayed Hasan Mehdi Rokiah Hashim Raza Murad Ghalib Chin Sing Yeap Hoong-Kun Fun

In the title compound, C(21)H(22)O(5), the mean planes of the pyran and dimeth-oxy-phenyl rings are nearly perpendicular to one another, with the dihedral angle between them being 88.21 (8)°. The pyran ring adopts a boat conformation whereas the two fused cyclo-hexane rings adopt envelope conformations. In the crystal, mol-ecules are linked into a three-dimensional network by inter-molecular C-...

Journal: :Physical chemistry chemical physics : PCCP 2011
Emiliano Brini Valentina Marcon Nico F A van der Vegt

Systematically coarse grained models for complex fluids usually lack chemical and thermodynamic transferability. Efforts to improve transferability require the development of effective potentials with unequivocal physical significance. In this paper, we introduce conditional reversible work (CRW) potentials that describe nonbonded interactions in coarse grained models at the pair level. The met...

Journal: :Chemical communications 2008
Linfeng Hu Renzhi Ma Tadashi C Ozawa Fengxia Geng Nobuo Iyi Takayoshi Sasaki

Layered rare-earth hydroxide crystallites self-assembled at the hexane/water interface were transferred to various substrates to form a monolayer film, which exhibited photoluminescence properties and ion-exchange ability.

2012
Saeed Balalaie Yaghoub Haghighatnia Frank Rominger Vahid Amani

In the title compound, C(19)H(23)IN(2)O(2), the cyclo-hexane ring adopts a chair conformation, and the mean plane of the propiolamide unit is approximately perpendicular to the benzene ring [dihedral angle = 88.12 (13)°]. Weak intra-molecular C-H⋯O hydrogen bonding is observed between the carbonyl group and the benzene ring. In the crystal, classical N-H⋯O hydrogen bonds and weak C-H⋯O inter-ac...

Journal: :Faraday discussions 2014
Alec G McLennan Alexey Y Ganin Yasuhiro Takabayashi Ross H Colman Ruth H Zadik Matthew J Rosseinsky Kosmas Prassides

A solution chemistry synthetic route yields Cs(3)C(60) with a face-centred cubic structure. The described method uses well-established Schlenk techniques and THF as a solvent. The controlled addition of an organo-metallic salt reducing agent prevents the formation of C(60)(4-) salts. The final product can be precipitated from the solution using hexane as an anti-solvent.

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