نتایج جستجو برای: axial and equatorial position
تعداد نتایج: 16855566 فیلتر نتایج به سال:
background: it has been estimated that 67 million people worldwide are affected with a primary glaucoma and that one-third have primary angle closure glaucoma. we aimed to determine the biometric differences between the eyes of patients with acute attack of primary angle closure and their non-involved fellow eyes. methods: twenty eight patients with acute attack of primary angle closure were ...
In the title triangulo-triruthenium(0) compound, [Ru(3)(C(25)H(22)As(2))(C(6)H(12)Cl(3)O(3)P)(CO)(9)], the bis-(diphenyl-arsino)methane ligand bridges an Ru-Ru bond and the monodentate phosphine ligand bonds to the third Ru atom. Both the arsine and phosphine ligands are equatorial with respect to the Ru(3) triangle. In addition, each Ru atom carries one equatorial and two axial terminal carbon...
The whole mol-ecule of the title compound, [NiCl2(C3H4N2)2(NH3)2], is generated by inversion symmetry. The Ni(II) ion, which is located on an inversion center, has a distorted octa-hedral coordination environment and is surrounded by two ammine N atoms and two Cl atoms in the equatorial plane, with two N atoms of two imidazole groups occupying the axial positions. The imidazole ring makes a dih...
In the title compound, [Zn(CH(3)COO)(2)(C(28)H(21)N(3)O)], the Zn(II) ion is in a trigonal-bipyramidal ZnN(3)O(2) coordination with a tridentate N-chelating 4'-[4-(benz-yloxy)phen-yl)-2,2':6',2''-terpyridine ligand in the equatorial position and two acetate anions in the axial positions. The three pyridine rings are approximately coplanar, with a maximum deviation of 0.03 Å from the mean plane....
In the title compound, [Ir(C(18)H(15)P)(2)(CO)(3)]PF(6)·CH(3)OH, the Ir(I) atom is coordinated by two triphenyl-phosphine ligands in axial sites and three carbonyl ligands in the equatorial plane of a fairly regular trigonal bipyramid: the equatorial C-Ir-C angles range from 115.45 (9) to 126.42 (10)°. The small deviations from the ideal tetra-hedral geometry around the P atoms are illustrated ...
The title compound, C(14)H(20)O(5)S·0.5H(2)O, crystallizes with two organic mol-ecules and a solvent water mol-ecule in the asymmetric unit. In both mol-ecules, the hexa-pyranosyl rings adopt a slightly distorted chair conformation ((5)C(2)) with four substituents in equatorial positions and one substituent in an axial position. The main difference between the organic mol-ecules is the dihedral...
The title compound, [Na(C(2)BF(2)O(4))(CH(3)CN)(2)](n), forms infinite two-dimensional layers running parallel to (010). The layers lie across crystallographic mirror planes at y = 1/4 and 3/4. The Na, B and two F atoms reside on these mirror planes. The Na(+) cations are six-coordinate. Two equatorial coordination positions are occupied by acetonitrile mol-ecules. The other two equatorial coor...
The title compound, C(34)H(25)Cl(3)O(3)S(2)·0.5CH(3)OH, was synthesized by the reaction of thio-phene-2-carbaldehyde with acetophenone and NaOH under solvent-free conditions, using tetra-butylammonium bromide as a phase-transfer catalyst. The central six-membered ring adopts a chair conformation with the bulky thio-phene, 4-chloro-phenyl and 4-chloro-benzoyl substituents in equatorial positions...
The title compound, (C9H17N2)[ZnBr(C32H16N8)], contains a bromido-(phthalocyaninato)zincate anion and a protonated 1,8-di-aza-bicyclo-[5.4.0]undece-7-ene cation, [DBUH](+). The central Zn(II) atom has a distorted square-pyramidal geometry, with four iso-indole N atoms of the macrocycle in equatorial positions and a bromide ion in the axial position. The latter has a relatively high displacement...
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