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Crystallography 2018 Structural Chemistry & Crystallography Communication
ISSN: 2470-9905 Page 64
June 04-05, 2018
London, UK
3rd Edition of International Conference on
Advanced Spectroscopy,
Crystallography and Applications
in Modern Chemistry
Coordination polymers are a class of polymers whose repeated
units are coordination complexes. A subclass of these is
the metal‐organic frameworks that are coordinated with organic
ligands containing potential voids. Coordination polymers
are relevant to many fields such as organic‐, inorganic‐, bio‐,
electro‐chemistry; material science and pharmacology. Many
potential applications led to extensive studies in the past few
decades. Coordination polymers have many applications such
as dyes, molecular storages, catalysts, ion exchange, electrical
conductors, bioactive molecules, sensors, and single molecule
magnet. Also, they can be used in the fields of molecular
electronics, medicine, luminescence and optics. Herein, we
report the synthesis of the poly{bis‐(3‐nitro‐2,4‐pentanediono)‐
copper(II)} linked via nitro group as bridging agent. Thus, we
believe that this moiety can be functioned as a channel for
energy and electron transference, presenting the X‐ray single
crystal structure of [‐Cu‐{Cu(NO2‐acac)2}3‐Cu‐]n. The organo‐
inorganic polymer, poly{bis‐(3‐nitro‐2,4‐pentanediono)‐copper(II)},
[{Cu(NO2‐acac)2}3]n, has been prepared and its crystal structure
was determined. The structure consists of a trimeric unit in which,
acetylacetone ligated symmetrically to copper atoms that pose in
the center of octahedrons. The three octahedral fragments of the
trimer are linked to each other through nitro group. Crystal Data:
C10H12CuN2O8, Mr = 351.76, triclinic, P‐1 (No. 2), a = 5.8237(2)
Å, b = 7.7963(3) Å, c = 7.8847(3) Å, α = 81.988(2)°,  = 75.294(2)°,
γ = 72.217(2)°, V = 328.98(2) Å3, T = 143(2) K, Z = 1, Z’ = 0.5,
μ(Mo Kα) = 1.703, 3021 reflections measured, 1421 unique (Rint
= 0.0156) which were used in all calculations. The final wR2 was
0.0686 (all data) andR1was 0.0217 (I > 2σ (I)). The three repeating
units are linked via the nitro group as bridged moiety attached to
α‐position of the acetylacetonato ligand. The base plane of each
monomeric unit being formed with the four oxygen atoms, namely
O1, Oi1, O2 and Oi2 belongs to the acac ligand coordinated to the
central Cu‐atom. Cu atom is bonded axially to Oii3 and Oiii3 of the
nitro groups whose belong to the prepared monomers adopting
distorted octahedral geometry in each monomer. Thus, it seems
that the axial Cu‐Oii3 and Cu‐Oiii3 are longer than the equatorial
Cu1‐O11.9233(13) Å) and Cu1‐O2 (1.9195(13) Å) led to distorted
octahedral geometry, in which the Cu atom is located at its center.
SYNTHESIS AND CRYSTAL STRUCTURE OF NEW POLY(ORGANIC-
INORGANIG) POLYMERS POLY[CU(NO2-ACAC) 2]N
Hadi Salman Al-Lami
University of Basrah, Iraq
Struct Chem Crystallogr Commun 2018, Volume 4
DOI: 10.21767/2470-9905-C1-006