نتایج جستجو برای: poly o

تعداد نتایج: 629561  

2009
Pei-Zhou Li Qiang Xu

In the one-dimensional title coordination polymer, [Co(C(2)O(4))(C(10)H(8)N(2))](n), the Co(II) atom is coordinated in a distorted octa-hedral geometry by two N atoms from one 2,2'-bipyridine ligand and four O atoms belonging to two chelating oxalate ligands. Two neighboring Co centers are bridged by an oxalate ligand, forming a one-dimensional chain structure.

2009
Urszula Rychlewska Beata Warzajtis Mirjana Dj. Dimitrijević Nenad S. Draskovic Miloš I. Djuran

The title compound, {[Cd(2)(C(2)H(3)O(3))(2)(SO(4))(H(2)O)(4)]·H(2)O}(n), was obtained unintentionally in a transmetallation reaction. The crystal structure contains a two-dimensional metal-organic framework based on Cd(II)-(μ-hydroxy-acetato-κ(4)O(1),O(2):O(1),O(1'))-Cd(II) zigzag chains joined together by bridging SO(4) anions. The resulting layers are shifted with respect to each other and a...

2010
Juan Yang Jun Dai Xiaohan Wang

In the title coordination polymer, [Pb(C(7)H(5)O(2))(NO(3))(C(10)H(8)N(2))](n), the Pb(II) ion is eight-coordinated by two N atoms from one 2,2'-bipyridine ligand, two O atoms from one benzoate anion and four O atoms from three nitrate groups (one chelating, two bridging) in a distorted dodecahedral geometry. Adjacent Pb(II) ions are linked by bridging nitrate O atoms through the central Pb(2)O...

2012
Fengxia Xie Dan Zhang Xinxin Zhang

In the asymmetric unit of the title polymeric compound, [Co(C(8)H(4)O(4))(C(5)H(5)N)(2)](n), there are two crystallographically independent Co(II) atoms, each of which is six-coordinated in a distorted octa-hedral geometry by four O atoms from benzene-dicarboxyl-ate anions and two N atoms from pyridine ligands. The benzene-dicarboxyl-ate dianions bridge the Co(II) atoms into a tape running alon...

2011
Olimjon Azizov Zukhra Kadirova Tohir Azizov Samat Tolipov Bakhtiyar Ibragimov

In title compound, [Ca(C(7)H(5)O(2))(2)(C(7)H(6)O(2))(H(2)O)](n), the eightfold-coordinated Ca(II) ion is bonded to four carboxyl-ate O atoms from two benzoate ions, an O atom from benzoic acid and a water O atom. One of the carboxyl-ate groups bridges adjacent Ca(2+) ions, forming a polymeric ribbon structure parallel to [010]. In the crystal, the benzoate anions and water mol-ecule inter-act ...

2010
Jun-Xia Xiao Xian-Ge Wu Liang Qin

In the title complex, {[Pb(C(8)H(7)O(3))(2)(H(2)O)]·H(2)O}(n), the Pb(II) atom is seven-coordinated by six carboxyl-ate O atoms from four different 2-hydroxy-phenyl-acetate (2-dph) ligands and one water mol-ecule, displaying a hemidirected irregular geometry, with the empty side of the metal ion capped by a benzene ring forming a Pb⋯π contact [Pb⋯centroid distance = 3.342 (2) Å]. One 2-dph liga...

2011
Zhu-Nian Jin

In the title compound, {[Sr(C(7)H(4)FO(2))(2)(H(2)O)(2)]·H(2)O}(n), the Sr(II) atom is coordinated by six O atoms and one F atom from four 2-fluoro-benzoate ligands and two water mol-ecules, resulting in an irregular SrFO(8) coordination environment. The μ(3)-2-fluoro-benzoate ligand bridges three symmetry-related Sr(II) atoms, giving rise to a chain structure extending along [010]. The polymer...

2009
Yan Chang Kou-Lin Zhang Seik Weng Ng

In the title compound, [Co(C(2)O(4))(C(10)H(8)N(2))](n), the oxalate group chelates two adjacent metal atoms, resulting in a zigzag chain running along the a axis. The Co(II) centre exists in an all cis-octa-hedral coordination geometry.

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