Question: The anion is a six-coordinate complex with a distorted octahedral geometry around NiII.
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12.4 years ago by
Bean Y. Nat10
Bean Y. Nat10 wrote:
SREA Continues To Rocket, UP Another 29% By Close! Score One Inc. (SREA) $0.40 UP 29% The watchers are right, SREA keeps climbing. The Market Makers are raking it in. Act fast and you can too. Look at the numbers and get on SREA first thing Thursday! Both the Cu and the Owater atoms occupy special positions on a twofold rotation axis. These chains are decorated with L ligands alternately on the two sides. Intermolecular O-HO hydrogen bonds link the ions and water molecules. Each bbi molecule acts as a bidentate ligand that binds two AgI atoms, thus forming a one-dimensional chain. Each CaII ion is coordinated by two carboxylate O atoms, a hetero-ring N atom and three water O atoms. Both the Cu and the Owater atoms occupy special positions on a twofold rotation axis. There are two formula units per asymmetric unit. Hydrogen bonds involving both the coordinated and uncoordinated water molecules help to consolidate the structure. The Mn centre and coordinated water molecule lie on a twofold rotation axis. The crystal structure is further stabilized by weak intra- and intermolecular C-HO hydrogen bonds and C-H interactions. Weak intermolecular C-HI interactions seem to be effective in stabilizing the crystal structure. The molecules are organized so that isopropylamine ligands project from the layers, forming organic interlayers. This crystal structure has an infinite three-dimensional framework. The two Cl- anions bridge two CuII atoms to form a dimeric complex molecule, which lies on an inversion centre. The structure exhibits intermolecular N-HO and C-HO hydrogen bonds. Intermolecular hydrogen bonds form a three-dimensional framework. Finally, N-HO hydrogen bonds link the chains together, reinforcing the crystal cohesion. It is also linked to the O atoms of two other tetraaanions in the polyanionic layer. One of the cations is disordered essentially equally over two orientations. The cyano group and the methyl group have axial and equatorial orientations, respectively. All atoms except for methyl H atoms lie on crystallographic mirror planes. The two independent dinuclear molecules in the asymmetric unit display similar bond dimensions. Molecules assemble into a three-dimensional network through weak ClHCphenyl hydrogen bonds. This crystal structure has an infinite three-dimensional framework. The uncoordinated water molecules contribute to the formation of the supramolecular structure via O-HO hydrogen bonds. The cation and anion both lie on crystallographic twofold axes. Attar Gharamaleki, P. Finally, N-HO hydrogen bonds link the chains together, reinforcing the crystal cohesion. The CuII atom lies on a center of inversion. The binaphthyl tail-to-tail packing in the hydrophobic layer is governed by weak C-H interactions. Other molecules are arranged diagonally between adjacent chains and bridge the chains through weak C-HO interactions. The molecules are linked by N-HO and O-HO hydrogen bonds. Hydrogen bonds involving both the coordinated and uncoordinated water molecules help to consolidate the structure.
bridge inversion • 395 views
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