Zobrazeno 1 - 10
of 4 859
pro vyhledávání: '"Seik Weng Ng"'
Autor:
Seik Weng Ng
Publikováno v:
Macedonian Journal of Chemistry and Chemical Engineering, Vol 34, Iss 1, Pp 57-61 (2015)
In the refinement of the crystal structure of [Cd(C12H10N4)(C15H9O2)2(CH3OH)].0.5H2O.CH3OH, the lattice water molecule was not located by difference Fourier synthesis but was instead deduced by using SQUEEZE owing to severe disorder of the water mole
Externí odkaz:
https://doaj.org/article/908eb69025194c3086ffcede3630f29a
Autor:
Julio Zukerman-Schpector, Lucas Sousa Madureira, Glaudeston Dutra Wulf, Hélio A. Stefani, Stanley N. S. Vasconcelos, Seik Weng Ng, Edward R. T. Tiekink
Publikováno v:
Molecules, Vol 19, Iss 2, Pp 1990-2003 (2014)
Two independent molecules that differ in terms of rotation about the central S-N bond comprise the asymmetric unit of the title compound 1. The molecules have a V-shape with the dihedral angles between the fused ring system and benzene ring being 79.
Externí odkaz:
https://doaj.org/article/286941096937434c95605beb358fd49a
Publikováno v:
Arabian Journal of Chemistry, Vol 9, Iss S2, Pp S1610-S1617 (2016)
A new asymmetrical tripodal amine, [H3L2]Br3 containing morpholine moiety was prepared from reacting of one equivalent of N-(3-aminopropyl)morpholine and two equivalents of tosylaziridine, followed by detosylation with HBr/CH3COOH. The products were
Externí odkaz:
https://doaj.org/article/b4f20ee86439458ca55776af2f5c97a5
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 71, Iss 11, Pp e4-e4 (2015)
In the paper by Asiri et al. [Acta Cryst. (2012), E68, o1154], the title and the chemical name of one of the reagents used in the synthesis are corrected.
Externí odkaz:
https://doaj.org/article/f02e986a37d4443cb7060702731b47a1
Autor:
Tilal Al-Samani, Pervez Ahmad, Ahmed Bari, Adnan Kadi, Hatem A. Abdel-Aziz, Tarek Aboul-Fadl, Seik Weng Ng
Publikováno v:
Molecules, Vol 16, Iss 5, Pp 3544-3551 (2011)
A facile and efficient method for synthesis of fenamic acid hydrazides from their acids in one-step reaction under microwave irradiation and solvent-free conditions was developed. Compared with the two-step conventional heating method, the process wa
Externí odkaz:
https://doaj.org/article/680c025716794a47abeaa7c800ac53e2
Publikováno v:
Macedonian Journal of Chemistry and Chemical Engineering, Vol 28, Iss 1, Pp 55-77 (2009)
Preparation of single crystals of spiroconjugated bis-chelated boron compounds containing ligands such as propen-1,3-diolates and oxalate, for application as lasing materials in dye laser technology, is burdened by their insolubility in organic solve
Externí odkaz:
https://doaj.org/article/a5f023e6b10a4bb8bd7c7f324774db80
Publikováno v:
Molbank, Vol 2014, Iss 3, p M831 (2014)
Novel synthesis of a 2-amino-3-cyano-2,6-diphenyl pyridine by a one-pot multi-component reaction of 1,3-diphenylpropane-1,3-dione, malononitrile and phenethylamine in the presence of N-hydroxybenzamide and zinc chloride has been reported. The structu
Externí odkaz:
https://doaj.org/article/8ab3a0e1425643c980e2113cceeea4b2
Publikováno v:
Acta Crystallographica Section E, Vol 70, Iss 6, Pp m211-m212 (2014)
The molecule of the title complex, [Ni2(C21H15N3O5)2(H2O)4]·4C3H7NO, is located on an inversion centre. This results in a dimeric NiII complex, with the two NiII atoms bridged by phenolate O atoms. The tridentate ligand is chelated to each NiII atom
Externí odkaz:
https://doaj.org/article/df7c6a5eb4a646929e0c66e0fc4dd706
Autor:
Chin Yee Jan, Norzianah Binti Haji Shamsudin, Ai Ling Tan, David J. Young, Seik Weng Ng, Edward R. T. Tiekink
Publikováno v:
Acta Crystallographica Section E, Vol 70, Iss 3, Pp o323-o323 (2014)
In the title compound, C8H3N3O2 (systematic name: 4-nitrobenzene-1,2-dicarbonitrile), the nitro group is twisted out of the plane of the benzene ring to which it is attached [O—N—Cring—Cring torsion angle = 9.80 (13)°]. In the crystal packing,
Externí odkaz:
https://doaj.org/article/0dd5b7d329b142c384f28046d134b570
Publikováno v:
Acta Crystallographica Section E, Vol 70, Iss 3, Pp o334-o334 (2014)
The asymmetric unit of the title cyclic thiourea derivative, C10H12N2S, comprises two molecules, each of which has a twist about the CH2—CH2 bond within the five-membered ring. The major difference between the independent molecules is manifested in
Externí odkaz:
https://doaj.org/article/db84c869cc1e4d84b84a87c2907df31e