نتایج جستجو برای: l thia

تعداد نتایج: 619137  

2010
Kim Potgieter Peter Mayer Eric Hosten Thomas I. A. Gerber

The structure of the title compound, C(18)H(10)N(2)S(3), consists of a central thio-phene ring and two terminal thia-zole rings. The two S atoms of the thia-zole rings are trans to the thio-phene S atom sulfur. The thia-zole rings are approximately coplanar with the thio-phene ring, with dihedral angles of 6.23 (11) and 4.81 (11)° between them. In the crystal, zigzag chains are formed along [01...

Journal: :Journal of lipid research 1998
L Madsen L Frøyland E Dyrøy K Helland R K Berge

The 3-thia fatty acids, tetradecylthioacetic acid and 3,10-dithiadicarboxylic acid are mitochondrion and peroxisome proliferators. Administration of these promotes an increased transport of endogenous fatty acids to these organelles and a higher capacity of beta-oxidation. Administration of 3-thia fatty acids to rats resulted in a significant decrease of the hepatic level of docosahexaenoic aci...

Journal: :Chemical communications 2006
Iti Gupta Roland Fröhlich M Ravikanth

The 21,23-dithia and 21-thia analogues of phlorins and mono-functionalized thiaphlorins were synthesized using easily available precursors and the mono-functionalized thiaphlorins were used further to synthesize the first examples of three covalently linked thiaphlorin-porphyrin dyads.

2013
M. Manjula B. C. Manjunath N. Renuka K. Ajay Kumar N. K. Lokanath

In the title compound, C19H14FNS2, the seven-membered thia-zepine ring adopts a slightly distorted twist boat conformation. The dihedral angle between the benzene rings is 53.6 (1)°. The mean plane of the thia-zepine ring is twisted by 34.3 (7)° and 36.6 (7)° from the benezene rings. A C-H⋯F interaction generates stacking of molecules along the ab plane.

2014
B. Narayana Prakash S. Nayak Balladka K. Sarojini Jerry P. Jasinski

In the title compound, C12H12N2OS, the dihedral angle between the benzene and thia-zole rings is 83.5 (7)°. The acetamide group is almost coplanar with the thia-zole ring, being twisted from it by 4.2 (9)°. In the crystal, pairs of N-H⋯N hydrogen bonds link mol-ecules into inversion dimers, generating R 2 (2)[8] loops; the dimers are stacked along [001].

2013
Abdul-Malek S. Al-Tamimi Ahmed M. Alafeefy Ali A. El-Emam Seik Weng Ng Edward R. T. Tiekink

In the title compound, C13H19N3S, the methyl-amine substituent is coplanar with the thia-diazole ring to which it is attached [C-N-C-S torsion angle = 175.9 (2)°] and the amine H atom is syn to the thia-diazole S atom. Supra-molecular chains along [101], sustained by N-H⋯N hydrogen bonding, feature in the crystal packing.

2011
Peng Yu Peng Wang Jian-Qiang Zhang Qiu He Rong Wan

The title compound, C(16)H(12)ClN(3)S, was synthesized by the reaction of 5-(4-methyl-phen-yl)-1,3,4-thia-diazol-2-amine and 4-chloro-benzaldehyde. The thia-diazole ring is essentially planar with mean deviation of 0.0042 Å.

2012
Yong Wang Wen-ge Zhang Yu-bo Wang Jing-wen Yu Lin Zhou

In the title compound, C(19)H(16)N(4)S(4), the mol-ecules exhibit a butterfly conformation, where the thia-diazole and attached benzene rings in two wings are almost coplanar, with dihedral angles of 0.8 (3) and 0.9 (3)°, respectively, while the two thia-diazole rings form a dihedral angle of 46.3 (3)°.

2012
Muhammad Nadeem Arshad Islam Ullah Khan Muhammad Zia-ur-Rehman Waseem Ahmed Abdullah M. Asiri

In the title compound, C(14)H(17)NO(5)S, the thia-zine ring adopts a half-chair conformation. The mol-ecule exhibits an intra-molecular O-H⋯O hydrogen bond, which forms a six-membered S(6) ring motif. The planes of the benzene and thia-zine rings are inclined at a dihedral angle of 15.30 (12)°.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم کشاورزی و منابع طبیعی گرگان - دانشکده محیط زیست 1391

در میان عناصر بی شمار سازنده طبیعت، آب نقش بسیار مهمی را، به سبب اختصاصات فیزیکی و شیمیایی خود ایفا می کند. با گسترش روزافزون جمعیت، از یک طرف نیاز به آب شیرین روز به روز افزایش و از طرفی ورود آلاینده ها به این اکوسیستم ، سرعت یافته است. مهمترین آلاینده هایی که باعث ایجاد آلودگی آب می شوند، نیتروژن و فسفر موجود در رواناب کشاورزی هستند که به آلودگی غیرنقطه ای (nps)، موسوم هستند. برای رفع این مشک...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید