نتایج جستجو برای: tetra

تعداد نتایج: 9109  

2008
Shuang-Ming Meng Yue-Qin Fan Yong Guo

In the title compound, [Ni(C(8)H(4)O(4))(C(36)H(44)N(4)O(4))](n), the Ni(II) atom is coordinated in a distorted octa-hedral geometry by the four N atoms of the 1,12,15,26-tetra-aza-5,8,19,22-tetra-oxa-3,4:9,10:17,18:23,24-tetra-benzocyclo-octa-cosane ligand and two O atoms from the terephthalate dianions. The Ni(II) atoms, which lie on inversion centres, are linked via terephthalate ligands to ...

2011
Qiurong Zhang Xuebin Chen Nan Zhu Tengfei Jiang Hongmin Liu

The title compound, C(23)H(22)O(8), is a binary benzoyl ester whose nucleus consists of a fused system made up of a methyl-enedi-oxy ring and two tetra-hydro-furan rings. One of the benzoyl ester groups is attached at the junction of the two tetra-hydro-furan rings. The other is attached to the outer tetra-furan ring. Both the benzoyl ester groups are in an axial conformation with respect to th...

2011
Gabriele Grieco Olivier Blacque Heinz Berke

The asymmetric unit of the title compound, C(17)H(13)N(4) (+)·BF(4) (-), contains one half of the benzimidazolium cation and one half of the tetra-fluoridoborate anion, with crystallographic mirror planes bis-ecting the mol-ecules. One F atom of the tetra-fluoridoborate is equally disordered about a crystallographic mirror plane. In the crystal, C-H⋯F inter-actions link the cations and anions i...

2014
Suchada Chantrapromma Chotika Jeerapong Worrapong Phupong Ching Kheng Quah Hoong-Kun Fun

The title compound, C20H28O3, known as 'trichodermaerin' [systematic name: (4E)-4,9,15,16,16-penta-methyl-6-oxa-tetra-cyclo-[10.3.1.0(1,10).0(5,9)]hexa-dec-4-ene-7,13-dione], is a diterpene lactone which was isolated from Trichoderma asperellum. The structure has a tetra-cycic 6-5-7-5 ring system, with the cyclo-hexa-none ring adopting a twisted half-chair conformation and the cyclo-pentane rin...

2011
Hoong-Kun Fun Madhukar Hemamalini Sankappa Rai A. M. Isloor Prakash Shetty

In the title mol-ecule, C(25)H(19)N(3)O(3)S(3), the tetra-hydro-pyridine ring adopts a half-chair conformation. The dihedral angle between the least-squares plane through the tetra-hydro-pyridine ring and two thio-phene and two benzene rings are 6.25 (9), 89.49 (9), 76.43 (9) and 84.93 (8)°, respectively, while the dihedral angle between the 1,3,4-oxadiazole and tetra-hydro-pyridine rings is 81...

2013
Muhammad Akhtar Mohammed Fettouhi Maqsood Ahmed Islam Ullah Khan Saeed Ahmad

The asymmetric unit of the title compound, (C6H18N2)[ZnCl4], consists of one tetra-chlorido-zincate anion and two half-N,N,N'N'-tetra-methyl-ethylenedi-ammonium cations. Each of the two di-ammonium cations is located about an inversion center and one of them is disordered over two sets of sites in a 0.780 (17):0.220 (17) ratio. The Zn(II) atom has a slightly distorted tetra-hedral coordination ...

2008
Zhang Yu Guodong Tang Jianying Zhao Zhengjing Jiang

The title compound, [Cu(6)V(2)O(2)S(6)(C(6)H(8)N(2))(6)], is constructed from six CuS(3)N and two VOS(3) distorted tetra-hedra, forming an octa-nuclear V/S/Cu cluster with C(i) symmetry. The geometry around the V atoms is slightly distorted tetra-hedral, while there are large distortions from ideal tetra-hedral geometry for the Cu atoms. Adjacent metal-metal distances range from 2.693 (1) to 2....

2017
Gorgui Awa Seck Libasse Diop Allen G. Oliver

The crystal structure of the low-temperature monoclinic phase of the title compound, [(CH3)4N]2[CuCl4], was determined at 120 K. The structure of the room-temperature phase has been determined in the ortho-rhom-bic space group Pmcm [Morosin & Lingafelter (1961 ▸). J. Phys. Chem. 50-51; Clay et al. (1975 ▸). Acta Cryst. B31 289-290]. The asymmetric unit consists of one discrete tetra-chlorido-cu...

2008
Bikshandarkoil R. Srinivasan Christian Näther Wolfgang Bensch

The title compound, (CH(6)N)(2)[WS(4)], was synthesized by the reaction of ammonium tetra-sulfidotungstate(VI) with aqueous methyl-amine. The title compound is isotypic with the corresponding Mo analogue (CH(6)N)(2)[MoS(4)], and its structure consists of a slightly distorted tetra-hedral [WS(4)](2-) dianion and two crystallographically independent methyl-ammonium (MeNH(3)) cations, all of which...

2009
Hong-ling Cai

In the title compound, [Zn(C(11)H(8)N(5)O)(N(3))](n), the Zn atom is hexa-coordinated by five N atoms and one O atom in a distorted octa-hedral geometry. The chelating 5-(8-quinolyloxymeth-yl)tetra-zolate ligands are approximately planar, with a dihedral angle of 3.6 (2)° between the quinoline and tetra-zole planes. Adjacent Zn atoms are linked by two bridging azide ligands across a centre of i...

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