35 / 41
Page 88
conferenceseries
.com
Volume 5, Issue 3 (Suppl)
Mod Chem Appl, an open access journal
ISSN: 2329-6798
Global Chemistry 2017
September 04-06, 2017
September 04-06, 2017 | London, UK
5
th
Global Chemistry Congress
Mod Chem Appl 2017, 5:3(Suppl)
DOI: 10.4172/2329-6798-C1-006
Synthesis, structural characterization and DFT studies of coordination polymers with nitrogen based
ligands
J Ngoune
1
, J Nenwa
2
, G Djimassingar
3
, A D Tayo
1
, T J M-M Ntep
1
, T R Fomuta
1
, O N Ngnabeuye
1
, A L Djoumbissie
1
, A C T Kuate
1
, C Pettinari
4
and
A
Eleuterio5
1
University of Dschang, Cameroon
2
University of Yaounde I, Cameroon
3
Mongo Polytechnique University Institute, Tchad
4
University of Camerino, Italy
5
Instituto de Investigaciones Quimicas, Spain
C
oordination polymer or Metal-Organic Frameworks (CP/MOFs), which are generally obtained by (self)-assembling of
oligonuclear metal clusters (the so-called Secondary Building Units or SBUs), are the subjects of an increasing number
of studies due to their interesting properties and promising applications in numerous important fields, such as gas storage,
molecular recognition and catalysis.[1] An interesting class of polynucleatingappropriate ligands able to drive the self-assembly
of MOFsis represented by N-donor units containing two moieties interconnected by various spacers. Such ligand can afford
different lengths, present linear or non-linear geometries and exhibit conformationally rigid or flexible molecular skeletons
withan infinite one-(1D), two-(2D) or three-(3D) dimensional framework or periodic nets.[2] Yaghiet al. have successfully
developed porous materials (such as metal carboxylate) with controllable shape and size of the cavities.[3] Some of these metal
carboxylates appeared to have unusual magnetic properties [4a] while others exhibited high efficiency for gas absorption such
as dihydrogen and dinitrogen.
In this context, we have designed, synthesized and characterized new CP/MOFs by treatment ofthe trinuclear core[Cu
3
(µ-
C
3
H
3
N
2
)3(µ
3
-OH)(H
3
CCOO)
2
(C
3
H
4
N
2
)] (A) [4b] with different either rigid or flexibleN-donor containing ligands.One of
the targeted species, the supramolecule[Cu
3
(4,4’-bipy)(HCOO)(HO)(µ-4,4’-bipy)
2
(µ
3
-OH) (µ-pz)3]∞.nH
2
O (C), obtained by
reaction of SBU with 4,4’-bipyridine (B), consists of a 3D supramolecular material, in which themonomeric unitsare connected
bynon-covalent bonds such as π-π stacking intermolecular interactions and/or C-H…π and C-H…O weak contacts.
In this contribution, we will present the fascinating waved channel structural architecture exhibited by these compounds,
which are CP/MOFs or supramolecular self-assembly.The aptitude of the dinitrogen ligandtake-upof theseMetal-Organic-
Frameworks will be discussed
jean.ngoune@univ-dschang.org