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Crystal and molecular structure of aquo(dihydrogen ethylenediamine-di(isopropylphosphonato) copper(II) monohydrate (Cu(H/sub 2/EDDIPH)H/sub 2/O) x H/sub 2/O

Journal Article · · Sov. J. Coordinat. Chem.; (United States)
OSTI ID:6367544
; ; ; ;
An x-ray structural investigation of (Cu(H/sub 2/EDDIPH)H/sub 2/O) x H/sub 2/O, where H/sub 2/EDDIPH/sup 2 -/ denotes an acidic ethylenediaminedi(isopropylphosphonate) anion, has been carried out (lambda Mo K..cap alpha.., 1506 reflections, direct method, anisotropic least-squares method to R = 0.036). The crystals are orthorhombic: a = 6.685(1), b = 15.605(4), c = 15.159(4) A, Z = 4, space group Pbc2/sub 1/. The Cu atom has tetragonal-pyramidal coordination with two O atoms and two N atoms of the tetradentate ligand in the base and with the O atom of a water molecule at the apex. The bond lengths in the polyhedron are as follows: Cu-O = 1.912(5) and 1.968(5) A, Cu-O/sub w1/ = 2.302(5), and Cu-N = 2.014(6) and 2.059(6) A. The molecules exist in a meso form. Each of the two terminal ionized oxygen atoms of the monoprotonated phosphonate groups serves as an acceptor in three H bonds of the O...H-O, O...H-N, and O...H/sub w1/-O/sub w1/ types (w1 denotes a coordinated water molecule) with an adjacent molecule, one of the H bonds being weakened. Two H rings are formed as a result. One is six-membered and is similar to the ring discovered in the structure of ethylenediaminetetramethylphosphonic acid. A comparison with the structure of the complex compound of H/sub 4/EDDIPH with oxonium cations has been made.
Research Organization:
All-Union Scientific-Research Institute of Chemical Reagents and Ultrapure Chemical Substances, USSR
OSTI ID:
6367544
Journal Information:
Sov. J. Coordinat. Chem.; (United States), Journal Name: Sov. J. Coordinat. Chem.; (United States) Vol. 12:7; ISSN SJCCD
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360602 -- Other Materials-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
AMINES
BINDING ENERGY
BOND ANGLE
BOND LENGTHS
CATALYSTS
CATALYTIC EFFECTS
CHELATING AGENTS
CHEMICAL BONDS
COMPLEXES
COMPLEXOMETRY
COORDINATION VALENCES
COPPER COMPLEXES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIMENSIONS
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY
FERMIONS
HYDROGEN
LATTICE PARAMETERS
LENGTH
LEPTONS
MOLECULAR STRUCTURE
NONMETALS
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
ORTHORHOMBIC LATTICES
PHOSPHONATES
SPACE GROUPS
STRUCTURAL CHEMICAL ANALYSIS
TRANSITION ELEMENT COMPLEXES
VALENCE