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Adipato-Bridged Mixed Ligand catena Complexes:
1
`
{[M(phen)(H
2
O)]L
2/2
} with M 5 Ni
II
,Cu
II
,Zn
II
;H
2
L 5 Adipic Acid
Yue-Qing Zheng
a,*
, Wen-Han Liu
b
, Jian-Li Lin
a
, and Lin-Yun Gu
a
a
Ningbo/P. R. China, Municipal Key Laboratory of Inorganic Materials Chemistry,
Institute for Solid State Chemistry, Ningbo University
b
Hangzhou/P. R. China, Department of Chemical Engineering,
Zhejiang University of Technology
Received September 24th, 2002.
Abstract. Three adipato bridged mixed ligand catena complexes
1
`
{[M(phen)(H
2
O)]-(C
6
H
8
O
4
)
2/2
} with M 5 Ni
II
(1), Cu
II
(2), Zn
II
(3) were synthesized. Structure determination based on X-ray dif-
fraction shows that they crystallize isostructurally in the monoc-
linic space group C2/c (no. 15) with cell dimensions of: 1 a 5
22.451(4) A
˚
, b 5 9.041(1) A
˚
, c 5 17.440(2) A
˚
, β 5 103.41(1)°, U 5
3443.4(9) A
˚
3
, Z 5 8; 2 a 5 22.479(2) A
˚
, b 5 9.067(1) A
˚
, c 5
17.494(3) A
˚
, β 5 103.67(1)°, U 5 3464.6(8) A
˚
3
, Z 5 8; 3 a 5
22.635(3) A
˚
, b 5 9.052(1) A
˚
, c 5 17.571(3) A
˚
, β 5 103.24(1)°,
Adipato-verbrückte, kettenförmige Gemischt-Liganden-Komplexe:
1
`
{[M(phen)(H
2
O)]L
2/2
} mit M 5 N
II
,Cu
II
,Zn
II
;H
2
L 5 Adipinsäure
Inhaltsübersicht. Drei Adipato-verbrückte, kettenförmige Ge-
mischt-Liganden-Komplexe
1
`
{[M(phen)(H
2
O)](C
6
H
8
O
4
)
2/2
} mit
M 5 Ni
II
(1), Cu
II
(2), Zn
II
(3) wurden synthetisiert. Die röntgno-
graphischen Kristallstrukturbestimmungen zeigen an, daß sie iso-
typ in der monoklinen Raumgruppe C2/c (Nr. 15) kristallisieren
mit den Gitterkonstanten: 1: a 5 22,451(4) A
˚
, b 5 9,041(1) A
˚
, c 5
17,440(2) A
˚
, β 5 103,41(1)°, U 5 3443,4(9) A
˚
3
, Z 5 8; 2: a 5
22,479(2) A
˚
, b 5 9,067(1) A
˚
, c 5 17,494(3) A
˚
, β 5 103,67(1)°, U 5
Introduction
In recent years, extensive efforts have been dedicated to the
design and construction of coordination polymers because
their supramolecular architectures with specific topologies
may endow them with promising properties for technologi-
cal and industrial applications [1]. Rigid bridging ligands
have been widely used for the self-assembly of metal atoms
into diverse supramolecular systems [227]. Our research in-
terests have been intensively focused on exploring the satu-
rated α,ω-dicarboxylate anions as bridging ligands to con-
struct coordination polymers since their carboxylate O
* Prof. Dr. Yue-Qing Zheng
Institute for Solid State Chemistry
Ningbo University, Ningbo
315211 P. R. China
Telefax: Int. 1574/87600747
e-mail: zhengcm@nbu.edu.cn
Z. Anorg. Allg. Chem. 2002, 628, j2j WILEY-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002 004422313/02/628/j2j $ 20.001.50/0
829
U 5 3504.5(9) A
˚
3
, Z 5 8. The crystal structure consists of
1D
1
`
{[M(phen)(H
2
O)](C
6
H
8
O
4
)
2/2
} zigzag chains, in which the met-
al atoms are all octahedrally coordinated by two N atoms of one
phen ligands and four O atoms of one H
2
O molecule and two adi-
pato ligands. The zigzag chains are held together by interchain π-
π stacking interactions and interchain hydrogen bonds.
Keywords: Transition metal; Adipato complexes; Phen complexes;
π-π Stacking interactions
3464,6(8) A
˚
3
, Z 5 8; 3: a 5 22,635(3) A
˚
, b 5 9,052(1) A
˚
, c 5
17,571(3) A
˚
, β 5 103,24(1)°, U 5 3504,5(9) A
˚
3
, Z 5 8. Die Kristall-
strukturen setzen sich aus 1D-
1
`
{[M(phen)(H
2
O)](C
6
H
8
O
4
)
2/2
}-
Zickzack-Ketten zusammen, in denen die Metall-Atome jeweils
von zwei N-Atomen eines Phen-Liganden und vier O-Atomen aus
H
2
O-Molekülen und zwei Adipat-Liganden oktaederisch koordi-
niert sind. Die Zickzack-Ketten werden durch π-π-Wechselwirkun-
gen und Wasserstoffbrückenbindungen zusammengehalten.
atoms are all capable of participating in coordination to
metal atoms along with the flexibility resulting from the C-
C single bond skeleton.
Recent investigations on a series of transition metal di-
carboxylates showed that the α,ω-dicarboxylate anions
tend to function as bis-monodentate or bis-bidentate li-
gands to bridge metal atoms into 1D chains, 2D layers
and 3D networks [8217]. Further studies on Cu(II) mixed
ligand dicarboxylato complexes [18] indicate that the mo-
lecular recognition of the incorporated phen ligands based
on π-π stacking interactions promotes supramolecular as-
semblies of the α,ω-dicarboxylato bridged coordination
polymers.
To our knowledge, however, a bis-chelating bridging fash-
ion of the α,ω-dicarboxylato ligands in coordination poly-
mers has not been reported yet. As an ongoing part of our
research, we report here on the syntheses and crystal struc-
tures of three adipato bridged transition metal coordination
polymers, in which the adipate anions act as bis-chelating
bridging ligands.