Supramolecular coordination networks constructed from infinite one-dimensional chains with 5-nitroisophthalate as bridge

Article abstract of DOI:10.1016/j.molstruc.2007.03.005

Four chain-like coordination polymers [Zn(NIPH)(py)₃]_n (1), [Mn(NIPH)(py)₃]_n (2), {[Co(NIPH)(py)₃]·(H₂O)}_n (3), and {[Cd(NIPH)(im)₂(H₂O)]·(H₂O)}_n (4), (where NIPH = 5-nitroisophthalate, py = pyridine, and im = imidazole) were synthesized and characterized by elemental analysis, IR, single-crystal X-ray diffraction, and TGA analysis. Crystal data for 1: monoclinic, C2/c, a = 20.044(4) A?, b = 16.182(3) A?, c = 14.539(3) A?, β = 111.96(3)°, Z = 8. Crystal data for 2: monoclinic, C2/c, a = 19.3590(13) A?, b = 16.5100(9) A?, c = 14.6392(7) A?, β = 111.844(3)°, Z = 8. Crystal data for 3: monoclinic, C2/c, a = 19.797(4) A?, b = 16.256(3) A?, c = 14.619(3) A?, β = 111.82(3)°, Z = 8. Crystal data for 4: monoclinic, P2(1)/c, a = 7.6882(15) A?, b = 17.861(4) A?, c = 13.219(3) A?, β = 92.53(3)°, Z = 4. Single-crystal X-ray diffraction analysis reveals that 1, 2, 3, and 4 have 1D zig-zag chain structures constructed from μ₂-bridge NIPH ligands and metal atoms. All of these four chain-like structures are finally packed into three-dimensional supramolecular networks through hydrogen bonds and π?π stacking interactions. The thermal properties of these complexes have been measured.

Full text of DOI:10.1016/j.molstruc.2007.03.005

Available online at www.sciencedirect.com
Journal of Molecular Structure 873 (2008) 35–40
www.elsevier.com/locate/molstruc
Supramolecular coordination networks constructed from infinite
one-dimensional chains with 5-nitroisophthalate as bridge
Junwei Ye, Jia Wang, Ying Wu, Ling Ye, Ping Zhang *
Key Laboratory for Supramolecular Structure and Materials of Ministry of Education, College of Chemistry, Jilin University, Changchun 130012, PR China
Received 18 January 2007; received in revised form 1 March 2007; accepted 1 March 2007
Available online 12 March 2007
Abstract
Four chain-like coordination polymers [Zn(NIPH)(py)
3 n 3 n 3 2 n
] (1), [Mn(NIPH)(py) ] (2), {[Co(NIPH)(py) ]Æ(H O)} (3), and {[Cd(NI-
PH)(im) (H O)]Æ(H O)} (4), (where NIPH = 5-nitroisophthalate, py = pyridine, and im = imidazole) were synthesized and character-
2
2
2
n
˚
ized by elemental analysis, IR, single-crystal X-ray diffraction, and TGA analysis. Crystal data for 1: monoclinic, C2/c, a = 20.044(4) A,
˚
˚
˚
˚
˚
b = 16.182(3) A, c = 14.539(3) A, b = 111.96(3)°, Z = 8. Crystal data for 2: monoclinic, C2/c, a = 19.3590(13) A, b = 16.5100(9) A,
˚
˚
˚
c = 14.6392(7) A, b = 111.844(3)°, Z = 8. Crystal data for 3: monoclinic, C2/c, a = 19.797(4) A, b = 16.256(3) A, c = 14.619(3) A,
b = 111.82(3)°, Z = 8. Crystal data for 4: monoclinic, P2(1)/c, a = 7.6882(15) A, b = 17.861(4) A, c = 13.219(3) A, b = 92.53(3)°,
Z = 4. Single-crystal X-ray diffraction analysis reveals that 1, 2, 3, and 4 have 1D zig-zag chain structures constructed from l -bridge
˚
˚
˚
2
NIPH ligands and metal atoms. All of these four chain-like structures are finally packed into three-dimensional supramolecular networks
through hydrogen bonds and pꢀ ꢀ ꢀp stacking interactions. The thermal properties of these complexes have been measured.
Ó 2007 Elsevier B.V. All rights reserved.
Keywords: Coordination polymer; Crystal structure; Chain; Hydrogen bonds
1
. Introduction
molecular coordination polymers because its two carbox-
ylic groups can bond with metal centers and one nitro
group can act as a hydrogen-bond acceptor [16–20].
The design and construction of functional supramolecu-
lar coordination polymers have attracted great attention
for their intriguing network topologies and their potential
applications as absorption, molecular separation, selective
catalysis, optoelectronic and magnetic materials [1–9].
Most coordination polymers reported so far involve the
using of polyfunctional organic ligands to bridge metal
ions by metal coordination covalent bonding, with the
aid of hydrogen bonding, pꢀ ꢀ ꢀp stacking interaction, and
other weak intermolecular interactions [10–13]. Polycarb-
oxylic acids and their derivatives are very important
ligands for desired extended networks [14,15]. Recent stud-
ies have demonstrated that 5-nitroisophthalate (NIPH) is a
versatile ligand in the synthesis of multidimensional supra-
On the other hand, 1D chain is the basic building block
in coordination polymers, as well as several infinite 1D
coordination polymers with zig-zag, linear, ladder, double
and helix chain motifs have been described recently [21–
24]. In our previous work, we have performed some 1D
chain-like coordination polymers with luminescence and
magnetism [25]. In this contribution, four coordination
polymers, [Zn(NIPH)(py)3]n (1), [Mn(NIPH)(py)3]n (2),
{[Co(NIPH)(py) ]Æ(H O)}
(3) and {[Cd(NIPH)(im)2
(H O)]Æ(H O)} (4), were synthesized by the use of 5-nitro-
3
2
n
2
2
n
isophthalate (NIPH) as a bridge ligand and pyridine (py)
and imidazole (im) as terminal ligands. The detailed char-
acterizations of elemental analysis, IR, single-crystal X-
ray diffraction, and TGA analysis are reported for the
coordination polymers 1, 2, 3, and 4. All of these coordina-
tion polymers display 1D chain structure feature and the
*
Corresponding author. Tel.: +86 431 85168471; fax: +86 431
85168439.
1D chains pack into different three-dimensional supramo-
E-mail address: zhangping@jlu.edu.cn (P. Zhang).
0
022-2860/$ - see front matter Ó 2007 Elsevier B.V. All rights reserved.
doi:10.1016/j.molstruc.2007.03.005

36
J. Ye et al. / Journal of Molecular Structure 873 (2008) 35–40
Table 1
Crystal data and structure refinement for 1–4
1
2
3
4
Empirical formula
Formula weight
Crystal size
C
511.78
0.30*0.19*0.16
Monoclinic
C2/c
20.044(4)
16.182(3)
14.539(3)
90
111.96(3)
90
4373.6(15)
8
1.554
23
H
18
N
4
O
6
Zn
C
501.35
23
H
18
N
4
O
6
Mn
C
523.36
0.35*0.14*0.11
Monoclinic
C2/c
19.797(4)
16.256(3)
14.619(3)
90
111.82(3)
90
4367.3(15)
8
1.592
23
H
19
N
4
O
7
Co
C
493.71
14 15 5 8
H N O Cd
0.37*0.21*0.16
Monoclinic
C2/c
19.3590(13)
16.5100(9)
14.6392(7)
90
111.844(3)
90
4343.0(4)
8
0.44*0.15*0.14
Monoclinic
P2(1)/c
7.6882(15)
17.861(4)
13.219(3)
90
92.53(3)
90
1813.5(6)
4
Crystal system
Space group
˚
a (A)
˚
b (A)
˚
c (A)
a (°)
b (°)
c (°)
˚
3
Volume (A )
Z
3
D
C
(mg/m )
1.534
1.808
Limiting indices
0 6 h 6 25, 0 6 k 6 20,
0 6 h 6 25, 0 6 k 6 21,
ꢁ19 6 l 6 17
0.657
0 6 h 6 25, ꢁ21 6 k 6 21,
ꢁ18 6 l 6 17
0.841
0 6 h 6 9, 0 6 k 6 23,
ꢁ17 6 l 6 17
1.259
ꢁ
18 6 l 6 17
ꢁ1
l (mm
F(000)
)
1.172
2096
2056
2152
984
Data/restraints/
parameters
5003/0/379
5138/0/307
4881/0/316
4142/0/269
GooF
0.998
1.007
0.871
1.004
a
R
1
[I > 2r(I)]
0.0309
0.0588
0.0616
0.0318
0.0685
0.0574
0.0642
0.1485
0.1245
0.1737
0.0209
0.0414
0.0318
0.0440
a
2
wR [I > 2r(I)]
R (all data)
1
a
a
wR
2
(all data)
0.0741
0.0778
P
P
P½wðF
P
a
2
o
2
c
2
2
o
2 1=2
R1 ¼
kF oj ꢁ jF ck= jF oj; wR2 ¼ f
ꢁ F Þ ꢂ= ½wðF Þꢂ g
:
lecular networks based on hydrogen bonding and pꢀ ꢀ ꢀp
1448(s), 1401(m), 1348(s), 1221(w), 1070(m), 1037(m),
927(w), 787(w), 731(m).
stacking interactions.
2.3. Preparation of [Mn(NIPH)(py) ] (2)
3 n
2
. Experimental
The synthesis procedure of 2 was similar to the above
description for 1 except that Zn(NO ) Æ 6H O was replaced
2
.1. Materials and methods
3
2
2
by MnCl Æ 4H O (0.099 g, 0.5 mmol). The yield was 55%
2
2
5
-Nitroisophthalic acid (H NIPH), pyridine (py), and
2
based on Mn. Anal. calcd. for C H N O Mn: C,
2
3
18
4
6
imidazole (im) were purchased from Fluka and used with-
out further purification. All of other reagents were pro-
cured from commercial sources and used as received.
Elemental analysis was performed on a Perkin–Elmer
5
3
1
1
5.10%; H, 3.62%; N 11.18%. Found: C, 55.04%; H,
.53%; N, 11.35%. IR (KBr, cm ): 3404(m), 3092(w),
641(vs), 1598(m), 1534(s), 1441(m), 1407(m), 1346(s),
220(w), 1070(w), 1037(w), 931(w), 790(w), 761(w), 733(m).
ꢁ1
2
400 CHN Elemental Analyzer. Thermogravimetric analy-
sis (TGA) was conducted on a Perkin–Elmer TGA 7 unit
with a heating rate of 10 °C/min in air. IR spectra were
measured on a Nicolet 5PC FT-IR spectrophotometer in
2
.4. Preparation of [Co(NIPH)(py) Æ(H O)] (3)
3
2
n
ꢁ
1
The synthesis procedure of 3 was similar to the above
description for 1 except that Zn(NO ) Æ 6H O was replaced
the range 4000–400 cm
.
3
2
2
by Co(NO ) Æ 6H O (0.145 g, 0.5 mmol). The yield was 55%
3
2
2
based on Co. Anal. calcd. for C H N O Co: C, 52.78%;
2
.2. Preparation of [Zn(NIPH)(py) ] (1)
3
23 19
4
7
n
H, 3.85%; N, 10.70%. Found: C, 52.64%; H, 3.78%; N,
ꢁ
1
1
1
1
0.82%. IR (KBr, cm ): 3442(m), 3059(w), 2787(w),
719(m), 1586(vs), 1541(m), 1468(s), 1389(s), 1348(s),
218(w), 1079(m), 1022(w), 920(w), 804(s), 732(w).
A mixture of Zn(NO ) Æ6H O (0.149 g, 0.5 mmol),
3
2
2
H NIPH (0.106 g, 0.5 mmol), py (1 ml), DMF (5 ml), and
2
water (5 ml) was sealed in a 25 ml Teflon-lined stainless
steel autoclave and was heated at 120 °C for 72 h. After
cooling to room temperature, colorless block-shaped crys-
tals were obtained with yield of 65% based on Zn. Anal.
calcd. for C H N O Zn: C, 53.98%; H, 3.54%; N,
2.5. Preparation of [Cd(NIPH)(im) (H O)]ÆH O (4)
2
2
2
A
mixture of CdCl Æ2.5H O (0.114 g, 0.5 mmol),
2 2
2
3
18
4
6
1
0.95%. Found: C, 53.57%; H, 3.48%; N, 11.12%. IR
H NIPH (0.106 g, 0.5 mmol), im (0.136 g, 1 mmol), and
H O (10 ml) was stirred for 30 min and heated at 140 °C
2
2
ꢁ1
(
KBr, cm ): 3379(m), 3100(w), 1636(s), 1571(s), 1533(s),

J. Ye et al. / Journal of Molecular Structure 873 (2008) 35–40
37
Table 2
˚
Selected bond lengths [A] and angles [°] for 1–4
1
i
Zn–O(3)
Zn–N(3)
2.003(2)
2.129(2)
Zn–O(2)
Zn–N(2)
2.109(2)
2.227(2)
Zn–O(1)
Zn–N(4)
2.475(2)
2.218(2)
i
i
O(3) –Zn–O(2)
121.96(7)
89.48(7)
90.17(8)
178.44(7)
86.67(7)
O(3) –Zn–N(3)
94.86(8)
92.14(8)
86.77(7)
56.50(6)
90.16(7)
O(2)–Zn–N(3)
O(3) –Zn–N(4)
N(4)–Zn–N(2)
N(3)–Zn–N(2)
N(2)–Zn–O(1)
143.15(7)
90.05(8)
175.72(7)
92.10(8)
89.50(7)
i
O(2)–Zn–N(4)
N(3)–Zn–N(4)
O(2)–Zn–N(2)
O(2)–Zn–O(1)
N(4)–Zn–O(1)
O(3A)–Zn–N(2)
i
O(3) –Zn–O(1)
N(3)–Zn–O(1)
2
i
i
Mn–O(1)
Mn–N(2)
2.049(2)
2.226(2)
Mn–O(3)
2.207(2)
2.298(2)
Mn–O(4)
2.362(2)
2.303(2)
Mn–N(3)
Mn–N(4)
i
i
O(1)–Mn–O(3)
123.67(5)
145.65(6)
90.48(6)
90.36(6)
89.73(6)
N(3)–Mn–N(4)
177.53(6)
55.68(5)
89.98(6)
89.80(5)
92.10(6)
O(1)–Mn–O(4)
179.22(6)
90.67(6)
89.95(5)
90.30(5)
87.53(5)
i
i
i
O(3) –Mn–N(2)
O(3) –Mn–O(4)
O(1)–Mn–N(2)
N(3)–Mn–O(4)
i
i
i
O(1)–Mn–N(3)
N(2)–Mn–N(3)
O(1)–Mn–N(4)
N(2)–Mn–O(4)
N(4)–Mn–O(4)
i
O(3) –Mn–N(3)
O(3) –Mn–N(4)
i
N(2)–Mn–N(4)
3
i
Co–O(3)
2.012(3)
2.206(4)
Co–N(3)
Co–O(1)
2.136(4)
2.206(3)
Co–O(2)
Co–N(2)
2.192(4)
2.195(4)
Co–N(4)
i
O(3) –Co–N(3)
93.71(15)
151.74(14)
89.15(14)
89.83(13)
89.83(13)
O(2)–Co–N(4)
O(3A)–Co–O(1)
N(3)–Co–O(1)
N(2)–Co–O(1)
N(4)–Co–O(1)
87.04(13)
173.84(13)
92.45(14)
90.61(12)
89.80(13)
O(3A)–Co–O(2)
N(2)–Co–N(4)
O(2)–Co–O(1)
N(3)–Co–N(2)
N(3)–Co–N(4)
114.23(13)
176.09(15)
59.32(12)
91.77(14)
92.10(14)
N(3)–Co–O(2)
i
O(3) –Co–N(2)
O(2)–Co–N(2)
i
O(3) –Co–N(4)
4
Cd–O(1)
Cd–N(2)
2.221(2)
2.293(2)
Cd–N(4)
Cd–O(3)
2.256(2)
2.535(2)
Cd–O(7)
Cd–O(4)
2.360(2)
2.420(2)
i
i
i
i
O(1)–Cd–N(4)
N(4)–Cd–N(2)
O(1)–Cd–O(7)
N(2)–Cd–O(7)
137.75(6)
91.69(6)
88.77(6)
177.45(6)
129.70(5)
N(2)–Cd–O(4)
O(1)–Cd–O(3)
N(4)–Cd–O(3)
88.87(6)
77.28(5)
144.97(5)
91.02(6)
52.51(5)
O(7)–Cd–O(4)
89.26(6)
91.10(6)
86.47(6)
90.12(6)
92.50(6)
i
O(1)–Cd–N(2)
N(2)–Cd–O(3)
i
i
i
O(7)–Cd–O(3)
N(4)–Cd–O(7)
N(4)–Cd–O(4)
i
i
i
i
O(1)–Cd–O(4)
O(4) –Cd–O(3)
Symmetry transformations used to generate equivalent atoms: for 1: i. ꢁx + 3/2, yꢁ1/2, ꢁz + 1/2. For 2: i. ꢁx + 1/2, y + 1/2, ꢁz + 3/2. For 3: i. ꢁx + 1/
, yꢁ1/2, ꢁz + 3/2. For 4: i. ꢁx, y + 1/2, ꢁz + 1/2.
2
for 120 h in a Teflon-lined stainless steel autoclave (25 ml)
under autogenous pressure. After cooling to room temper-
ature, the block-shaped crystals were obtained and washed
with water and dried in air. The yield was 60% based on
Cd. Element analysis calcd (%) for C H N O Cd: C
located in difference Fourier maps. All non-hydrogen
atoms were refined anisotropically. The hydrogen atoms
of 1–4 were located based on theoretical riding models
except those in water molecules of 4 which were deduced
from difference Fourier maps and refined isotropically.
1
4
15
5
8
3
4.06%; H 3.06%; N 14.19%; found: C 33.95%; H 2.98%;
ꢁ1
N 14.28%. IR (KBr, cm ) data; 3384(m), 1610(vs),
1
9
558(s), 1528(w), 1449(m), 1370(s), 1340(s), 1071(m),
26(w), 732(s), 654(w), 610(w).
2
.6. X-ray data collection and structure determination
The crystal structures of 1–4 were determined by single-
crystal X-ray diffraction experiment. The reflection data
were collected on a Rigaku R-AXIS RAPID diffractometer
(
MoKa radiation, graphite monochromator) at room tem-
perature with x-scan mode. Empirical absorption correc-
tion was applied for all data. The structure was solved by
direct methods and refined by full-matrix least squares on
2
F using SHELXTL97 software [26]. The heaviest atoms
Fig. 1. Perspective view of coordination environment of metal atom for 1–
3 [M = Zn (1), Mn (2), Co (3). Hydrogen atoms are omitted for clarity.
were firstly located. O and C atoms were subsequently

38
J. Ye et al. / Journal of Molecular Structure 873 (2008) 35–40
Fig. 2. Perspective view of coordination environment of Cd(II) in 4.
Fig. 3. View of the one-dimensional zig-zag chains in (a) 1–3 and (b) 4.
Experimental details for the structure determination are
given in Table 1. The selected bond distance and angles
are tabulated in Table 2. The hydrogen bonds are listed
in Table S1.
Crystallographic data for 1–4 have been deposited at the
Cambridge Crystallographic Data Center with the deposi-
tion number of CCDC 284161–284163 and 607755. These
data can be obtained free of charge from the Cambridge
Crystallographic Data Center via www.ccdc.cam.ac.uk/
conts/retrieving.html [or from the Cambridge Crystallo-
graphic Data Center, 12 Union Road, Cambridge CB2
1
EZ, UK; e-mail:deposit@ccdc.cam.ac.uk].
3
. Result and discussion
3
.1. Crystal structures of complexes 1, 2, and 3
Single-crystal structure analysis reveals that 1, 2, and 3
are composed of 1D zig-zag chains. The molecular struc-
tures of 1, 2, and 3 are shown in Figs. 1, S1 and S2, respec-
tively. In the asymmetric units of 1, 2, and 3, there is one
central metal atom, one NIPH and three pyridine mole-
cules, except that asymmetric unit of 3 contains additional
uncoordinated water molecule. The coordination environ-
Fig. 4. Packing structures for 1 (a) and 4 (b).

J. Ye et al. / Journal of Molecular Structure 873 (2008) 35–40
39
Fig. 5. Perspective view of the hydrogen-bonds between chains in 1, (a) along the a axis and (b) along b axis, and in 4, (c) along the a axis and (d) along c
axis.
ments of central metal atoms of 1, 2, and 3 can be described
as a distorted octahedron formed by three carboxylic-oxy-
gen atoms from two different NIPH ligands and three
nitrogen atoms from three different pyridine molecules.
The average bond distances of Zn–O, Mn–O, Co–O, Zn–
atom (N4) from one im ligand in the equatorial plane,
and one oxygen atom (O7) of the water molecules and
one nitrogen atom (N2) from one im ligand at the axial
position (Fig. 2). The average bond Cd–O and Cd–N dis-
˚
tances are 2.384 and 2.275 A, respectively. Similar to 1, 2,
N, Mn–N, and Co–N are 2.196, 2.206, 2.137, 2.191,
˚
and 3, each NIPH ligand links two metal centers and each
metal center connects two NIPH ligands to form the zig-
zag chain structure (Fig. 3). The supramolecular structure
of 4 is the three-dimensional network constructed from
chains via hydrogen bonds (Figs. 4 and 5). There are three
types of hydrogen bonds involving the O–Hꢀ ꢀ ꢀO hydrogen
bond between the coordinated water molecules and car-
boxylic-oxygen of NIPH ligands, C–Hꢀ ꢀ ꢀO hydrogen bond
between the C–H groups of im ligands and carboxylic-oxy-
gen of NIPH ligands, N–Hꢀ ꢀ ꢀO hydrogen bond between
the N–H groups of im ligands and nitro group of NIPH
ligands. The uncoordinated water molecules are located
between the chains with strong O–Hꢀ ꢀ ꢀO hydrogen bond-
ing interactions (Figs. 5 and S4).
2
.276, and 2.179 A, respectively, which are in good agree-
ment with those found in other extended structures con-
structed from NIPH ligands [16–20]. Each l -bridge
2
NIPH ligand coordinates with two metal atoms in biden-
tate chelating/monodentate modes, resulting in a zig-zag
chain (Fig. 3). The three-dimensional networks of 1, 2,
and 3 are formed from one-dimensional chains via C–
Hꢀ ꢀ ꢀO hydrogen bonds and pꢀ ꢀ ꢀp stacking interactions
(
Fig. 4). It is found that there are C–Hꢀ ꢀ ꢀO hydrogen bond-
ing patterns between py ligand C–H groups and nitro-oxy-
gen atoms of NIPH, py ligand C–H groups and
carboxylate oxygen atoms of NIPH (Figs. 5 and S3). More-
over, there are pꢀ ꢀ ꢀp stacking interactions with contact dis-
˚
tance of 3.393 A between the aromatic rings of the py
molecules of adjacent chains.
3.3. Thermography analyses of complexes 1–4
3
.2. Crystal structures of complex 4
The thermal stabilities of these complexes were studied
by thermogravimetric analyses (TGA) under atmosphere
(Fig. S5). The TGA results of the 1 and 2 indicate that
the thermal decomposition of 1 and 2 is initiated at 107
and 112 °C, respectively. The two stages of weight loss of
1 and 2 correspond to that of py and NIPH ligands. The
residue products weighted 15.54% and 17.19% are metal
In order to investigate the influence of the terminal
ligand on structures, im was employed to replace py ligand,
the {[Cd(NIPH)(im) (H O)]Æ(H O)} (4) and [M(NIPH)
2
2
2
n
(
im)2] (M = Zn, Co) were isolated respectively.
[
M(NIPH)(im) ] (M = Zn, Co) have been reported previ-
2
ously [22,27], therefore we only describe the structure of
. In the asymmetric unit of 4, there is one Cd ion, one
oxides (ZnO and MnO , respectively), which is in agree-
2
4
ment with the value calculated (15.90% and 17.34%) for 1
and 2, respectively. The TGA of the 3 shows three stages
of weight loss, the first 3.78% up to 72 °C, which is ascribed
to the loss of water molecules (calculated value 3.44%), and
the other two steps are equal to the loss of py and NIPH
ligands. The residue product weighted of 14.83% is metal
NIPH ligand dianion, two im ligands, one coordination
water molecule and one uncoordination water molecule.
The environment of Cd atom can be described as a dis-
torted octahedral with three oxygen atoms (O1, O3A,
O4A) from two bridging NIPH ligands and one nitrogen

40
J. Ye et al. / Journal of Molecular Structure 873 (2008) 35–40
oxides (Co O , calculated value of 15.85%). For 4, TGA
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Ed. 43 (2004) 1466.
2
3
curve shows three significant weight loses, first weight loss
of 7.22% from 86 to 252 °C is in accordance with the loss of
free and coordinated water molecule (calcd 7.30%). The the
other two are equal to the loss of im and NIPH ligands.
The residue product weighted of 27.86% is metal oxides
[
[
4] B. Moulton, M.J. Zaworotko, Chem. Rev. 101 (2001) 1629.
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(
CdO, calculated value of 26.01%).
5
45.
[
[
8] T. Sawaki, Y. Aoyama, J. Am. Chem. Soc. 121 (1999) 4793.
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4
. Conclusions
In summary, we have successfully synthesized four coor-
dination polymers based on infinite one-dimensional
[10] X.Q. Lu, J.J. Jiang, L. Zhang, C.L. Chen, C.Y. Su, B.S. Kang, Cryst.
Growth & Des. (2005) 419.
[11] W.B. Lin, Z.Y. Wang, L.J. Ma, J. Am. Chem. Soc. 121 (1999)
chains, formulated as [Zn(NIPH)(py) ] (1), [Mn(NIPH)(-
3
n
1
1249.
py)3] (2), {[Co(NIPH)(py) ]Æ(H O)} (3), and {[Cd(NI-
n
3
2
n
[12] H. Gudbjartson, K. Biradha, K.M. Poirier, M.J. Zaworotko, J. Am.
Chem. Soc. 121 (1999) 2599.
PH)(im) (H O)]Æ(H O)} (4). Each NIPH ligand links two
2
2
2
n
metal centers and each metal center connects two NIPH
ligands to form the one-dimensional zig-zag chain struc-
ture. All of these chain-like structures are finally packed
into three-dimensional supramolecular networks through
hydrogen bonds. It is indicative that the hydrogen bonds
can enhance the thermal stability of the coordination
polymers.
[13] S.R. Batten, R. Robson, Angew. Chem. Int. Ed. 37 (1998) 1460.
[
14] S. Kitagawa, R. Kitaura, S. Noro, Angew. Chem. Int. Ed. 43 (2004)
334.
2
[15] J.C. Dai, X.T. Wu, Z.Y. Fu, S.M. Hu, W.X. Du, C.P. Cui, L.M. Wu,
H.H. Zhang, R.Q. Sun, Chem. Commun. (2002) 12.
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Chem. (2004) 125.
[
[
[
[
[
[
17] H.T. Zhang, Y.Z. Li, H.Q. Wang, E.N. Nfor, X.Z. You, CrystEng-
Comm 7 (2005) 578.
18] J.W. Ye, P. Zhang, K.Q. Ye, W.R. Yin, L. Ye, G.D. Yang, Y. Wang,
Inorg. Chem. Commun. 9 (2006) 744.
19] J.H. Luo, M.C. Hong, R.H. Wang, R. Cao, L. Han, D.Q. Yuan, Z.Z.
Lin, Y.F. Zhou, Inorg. Chem. 42 (2003) 4486.
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Chem. Soc. 124 (2002) 9990.
Acknowledgment
This work was supported by the National Natural
Science Foundation of China (50573030 and 50225313).
21] Y.B. Go, X. Wang, E.V. Anokhina, A.J. Jacobson, Inorg. Chem. 43
Appendix A. Supplementary data
(
2004) 5360.
22] H.J. Chen, J. Zhang, W.L. Feng, M. Fu, Inorg. Chem. Commun. 9
(2006) 300.
Supplementary data associated with this article can be
found, in the online version, at doi:10.1016/j.molstruc.
[
[
23] X.M. Chen, G.F. Liu, Chem. Eur. J. 8 (2002) 4811.
24] H.T. Zhang, Y.Z. Lia, H.Q. Wang, E.N. Nfora, X.Z. You,
CrystEngComm 7 (2005) 578.
2
007.03.005.
[
[
25] J.W. Ye, P. Zhang, K.Q. Ye, H.Y. Zhang, S.M. Jiang, L. Ye, G.D.
Yang, Y. Wang, J. Solid State Chem. 179 (2006) 438.
26] G.M. Sheldrick, SHELXS-97, Program for Crystal Structure Solu-
tion, University of G o¨ ttingen, G o¨ ttingen, 1997.
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