نتایج جستجو برای: macrocyclic compound

تعداد نتایج: 130995  

2010
Li-Ke Zou Bin Xie Jian-Shen Feng Chuan Lai

In the title compound, [Cu(C(24)H(32)N(4))](C(14)H(14)O(2)PS(2))(2), the Cu(II) atom lies on an inversion center and is chelated by the macrocyclic ligand in a distorted CuN(4) square-planar geometry. Two O,O'-bis-(4-methyl-phen-yl)dithio-phosphate anions occupy the axial positions with long Cu⋯S distances of 3.0090 (8) Å. Inter-molecular N-H⋯S and C-H⋯S hydrogen bonding is present between the ...

2013
M. R. Ullah M. J. Hossain

Some macrocyclic complex compounds of Ni (II), Cu (II) and Fe (II) containing a ligand having tetraoxotetrahydrazin moity are synthesized by template condensation of malonodihydrazide (C3H8N4O2) with different aldehydes. The complexes are characterized on the basis of elemental analysis, UV-visible & IR spectroscopy, magnetic moment and conductance measurement and other physical properties. The...

2009
Jian-Shen Feng Li-Ke Zou Bin Xie Yu Wu

In the crystal structure of the title compound, [Cu(C(16)H(36)N(4))](C(14)H(14)O(2)PS(2))(2), the Cu(II) atom is located on an inversion center and is chelated by four N atoms of the macrocyclic meso-5,5,7,12,12,14- hexa-methyl-1,4,8,11-tetra-azacyclo-tetra-decane ligand in a square-planar geometry, with Cu-N distances of 2.013 (3) and 2.014 (3) Å. In the crystal structure, one O,S-dibenzyl dit...

2012
Lijun Xie Jie Huang Jian Zuo Hui Yu Yuanrong Cheng

The title compound, C(51)H(78)N(4)O(12), is a derivative of rapamycin, a triene macrolide anti-biotic mol-ecule isolated from Streptomyces hygroscopicus. The macrocyclic ring structure has 15 chiral centres, with one of the substituent hy-droxy groups giving an intra-molecular hydrogen bond to a ketone O-atom acceptor. The mol-ecules also form inter-molecular hy-droxy-ketone O-H⋯O hydrogen-bond...

2011
Mathias O. Senge Julia Richter

The title compound, [Pt(C(42)H(48)N(4))], was obtained through metallation of the corresponding free base with PtCl(2), followed by crystallization from methyl-ene chloride/methanol. The mol-ecule exhibits an almost planar macrocycle with an average deviation of the 24 macrocyclic atoms from their least-squares plane (Δ24) of 0.04 Å and an average Pt-N bond length of 2.022 Å. Despite the unsymm...

Journal: :Accounts of chemical research 2003
Jae Wook Lee S Samal N Selvapalam Hee-Joon Kim Kimoon Kim

The supramolecular chemistry of cucurbituril, a synthetic receptor, is fascinating because of the remarkable guest binding behavior of the host. Studies in the field, however, have met with limitations, since the only species known was the hexameric macrocyclic compound, cucurbit[6]uril. Recently we synthesized its homologues, cucurbit[n]uril (n = 5, 7, 8), and derivatives. These new members of...

2009
Fang-Fang Jian Song-Jiang Han

The title compound, [Ni(2)(C(12)H(12)N(2)O(4)S(3))(H(2)O)(4)]·2C(3)H(7)NO·3H(2)O, is made up of a centrosymmetric, bimetallic complex containing a 24-membered macrocyclic ring, two dimethyl-formamide and three water solvent mol-ecules. The Ni atom adopts a slightly distorted NiO(6) octahedral geometry arising from two O,O-bidentate ligands and two water molecules. There are inter-molecular O-H⋯...

2011
Jun-Xu Liao Hong-Bin Zhao De-Liang Yang Liang Chen Bang-Ying Wang

The title compound, [Ag(C(72)H(84)N(4)O(4))], crystallizes with the Ag(II) cation on a centre of symmetry. The macrocyclic 24-membered ring core is planar with a mean deviation of 0.0311 (15) Å and the four-coordinate Ag(II) cation fits into its center, at 2.0814 (19) and 2.0872 (19) Å, from the surrounding pyrrole-N atoms, in agreement with what is found in related compounds. The p-heptyl-oxyp...

2010
Zeynep Keleşoğlu Elif Çelenk Kaya Halit Kantekin Orhan Büyükgüngör

In the title compound, C(31)H(39)Br(2)N(3)O(6)S(2), a 17-membered aza-macrocyclic ligand containing two ether O and three aza N atoms, the three pendant aromatic rings form an 'E' shape. The dihedral angles between the central benzene ring and the side ones are 17.8 (3) and 7.4 (3)°, and the dihedral angle between the tosyl rings is 10.6 (3)°. The methyl group is disordered over two orientation...

2009
Zhe An Ru-Jin Zhou

In the title compound, [Ag(3)(C(8)H(6)N(3))(3)], the asymmetric unit contains three silver cations and three depronated 5-(2-pyrid-yl)pyrazol-1-ide ligands. Each silver cation is chelated by one 5-(2-pyrid-yl)pyrazol-1-ide ligand, which also acts as a bridging ligand towards the next silver ion via the second pyrazole N atom. In summary, three silver cations and three deprotonated 3-(2-pyrid-yl...

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