Sebacato-bridged Cu(II) phen complexes: Syntheses and crystal structures of 2∞[Cu2(phen)2L4/2] (H2O)6 and [(phen)2Cu(μ-L)Cu(phen)2](HL)2 (H2L)(H2O)4 (H2L = sebacic acid; phen = 1,10-phenanthroline)

Article abstract of DOI:10.1016/S0277-5387(02)01021-5

Reactions of freshly-prepared Cu(OH)₂ with sebacic acid (H₂L) and 1,10-phenanthroline (phen) in EtOH/H₂O (1:1 v/v) and CH₃OH/H₂O (1:1 v/v) and at pH 6.4 afforded two novel sebacato-bridged Cu(II) phen complexes ²∞[Cu₂(phen)₂L_4/2] (H₂O)₆ (1) and [(phen)₂Cu(μ-L)Cu(phen)₂](HL)₂ (H₂L)(H₂O)₄ (2), respectively, Complex 1 consists of 2D ²∞[Cu₂(phen)₂L_4/2] layers and lattice H₂O molecules. The Cu atoms are each square-pyramidally coordinated by two N atoms of one phen ligand and three O atoms of different sebacato ligands. Two adjacent square pyramids are edge-shared to form [Cu₂N₄O₄] dimers, which are interlinked by sebacato ligands to 2D ²∞[Cu₂(phen)₂L_4/2] layers with rhombus-like 52-membered rings. The resulting layers are assembled by interlayer π-π stacking interactions and hydrogen bonding interactions. Complex 2 comprises divalent [(phen)₂Cu(μ-L)Cu(phen)₂] complex cations, hydrogensebacate anions, sebacic acid molecules and lattice H₂O molecules. In the divalent complex cations, the Cu atoms are each octahedrally coordinated by four N atoms of two phen ligands and two O atoms of one bis-chelating sebacato ligand. The complex cations are assembled via π-π stacking interactions into positively charged 2D network. The hydrogensebacate anions, sebacic acid molecules and H₂O molecules build negatively charged 2D hydrogen-bonded networks. Both positively and negatively charged 2D networks are interwoven with each other to generate a novel supramolecular architecture.

Full text of DOI:10.1016/S0277-5387(02)01021-5

Polyhedron 21 (2002) 1621ꢁ1628
/
www.elsevier.com/locate/poly
Sebacato-bridged Cu(II) phen complexes:
2
syntheses and crystal structures of [Cu2(phen)2L4/2](H2O)6 and
ꢀ
[(phen)2Cu(m-L)Cu(phen)2](HL)2(H2L)(H2O)4
(H2Lꢀ
/
sebacic acid; phenꢀ
/
1,10-phenanthroline)
Dan-Yi Wei, Zu-Ping Kong, Yue-Qing Zheng *
Municipal Key Laboratory of Inorganic Materials Chemistry, Institute for Solid State Chemistry, Ningbo University,
Ningbo 315211, People’s Republic of China
Received 17 January 2002; accepted 8 April 2002
Abstract
Reactions of freshly-prepared Cu(OH)2 with sebacic acid (H2L) and 1,10-phenanthroline (phen) in EtOH/H2O (1:1 v/v) and
2
CH3OH/H2O (1:1 v/v) at pH 6.4 afforded two novel sebacato-bridged Cu(II) phen complexes ꢀ[Cu2(phen)2L4/2](H2O)6 (1) and
[(phen)2Cu(m-L)Cu(phen)2](HL)2(H2L)(H2O)4 (2), respectively. Complex 1 consists of 2D 2ꢀ[Cu2(phen)2L4/2] layers and lattice H2O
molecules. The Cu atoms are each square-pyramidally coordinated by two N atoms of one phen ligand and three O atoms of
different sebacato ligands. Two adjacent square pyramids are edge-shared to form [Cu2N4O4] dimers, which are interlinked by
2
sebacato ligands to 2D ꢀ[Cu2(phen)2L4/2] layers with rhombus-like 52-membered rings. The resulting layers are assembled by
interlayer pꢁp stacking interactions and hydrogen bonding interactions. Complex 2 comprises divalent [(phen)2Cu(m-L)Cu(phen)2]
/
complex cations, hydrogensebacate anions, sebacic acid molecules and lattice H2O molecules. In the divalent complex cations, the
Cu atoms are each octahedrally coordinated by four N atoms of two phen ligands and two O atoms of one bis-chelating sebacato
ligand. The complex cations are assembled via pꢁp stacking interactions into positively charged 2D network. The hydrogensebacate
/
anions, sebacic acid molecules and H2O molecules build negatively charged 2D hydrogen-bonded networks. Both positively and
negatively charged 2D networks are interwoven with each other to generate a novel supramolecular architecture. # 2002 Elsevier
Science Ltd. All rights reserved.
Keywords: Copper; Self-assembly; Supramolecules; X-ray structures
1. Introduction
construction of coordination polymers [9,10]. To this
goal, rigid bridging ligands such as 4,4?-bipyridine,
pyrazine, 4-pyridinecarboxyaldehyde, benezene-1,3,5-
tricarboxylate, 1,2,4,5-benzenetetracarboxylate have
Currently, rational design and syntheses of polymeric
metalꢁorganic coordination networks with specific
/
topologies have been a most active research topic, since
incorporation of active groups into coordination poly-
mers offer an excellent opportunity for the construction
of promising advanced materials with nonlinear optical
been extensively used [11ꢁ
carried by other groups or by us have shown that the
flexible a,v-dicarboxylato ligands (OOCÃ(CH2)n Ã
COO, nꢀ1ꢁ8) could bridge transition metal ions in
different coordinating fashions to form 1D, 2D and 3D
coordination polymers [8,19ꢁ23]. Efforts have also been
dedicated to the supramolecular assembly of transition
metals with the flexible a,v-dicarboxylato and hetero-
aromatic N-donor ligands and, as a result, a variety of
/
18]. Previous investigations
/
/
/
/
effect, magnetic properties, hostꢁ
/
guest chemistry, cata-
8]. Molecular self-
assembly of transition metal ions with organic ligands
lysis and electrical conductivity [1ꢁ
/
/
has proven to be a highly efficient strategy in the
mixed ligand complexes have been obtained [24ꢁ38].
Structure determinations indicate that the a,v-dicarbox-
ylate anions tend to coordinate metal atoms to form low
/
* Corresponding author. Tel.: ꢂ
574-87600747
E-mail address: zhengcm@nbu.edu.cn (Y.-Q. Zheng).
/
86-574-87600747/798; fax: ꢂ86-
/
0277-5387/02/$ - see front matter # 2002 Elsevier Science Ltd. All rights reserved.
PII: S 0 2 7 7 - 5 3 8 7 ( 0 2 ) 0 1 0 2 1 - 5

1622
D.-Y. Wei et al. / Polyhedron 21 (2002) 1621ꢁ1628
/
dimensional complexes such as discrete complex ions,
complex molecules and catena polymeric chains. Mixed
ligand complexes with 2D networks are very rare.
Additionally, most work was restricted to the low
members of the saturated a,v-dicarboxylate anions
and only a few studies have been carried out using
the best plane defined by O(1), N(1), N(2) and O(3)a
towards the apical O(3)b atom. The CuÁ Á ÁCu distance
˚
within the dimer is 3.419(1) A. The [Cu2N4O4] dimers
are interlinked by the bridging sebacato ligands into 2D
2
ꢀ[Cu2(phen)2L4/2] open layers with rhombus-like 52-
membered rings and the chelating phen ligands disposed
on both sides (Fig. 1). Such grid-like networks extend
infinitely parallel to (101) and are arranged so that
adjacent phen planes from different layers face antipar-
sebacate anions (OOCÃ
/
(CH2)8Ã
/
COO) as ligands [39].
Recently, McCann et al. have found that Cu(II) and
Mn(II) a,v-dicarboxylato complexes possess antimicro-
bial and anti-Candida activity [40,41]. In this paper, we
allel to each other with the interplanar phen-to-phen
˚
report two sebacato-bridged Cu(II) complexes
(1)
distance of 3.51 A, suggesting substantial pꢁp stacking
/
2
ꢀ[Cu2(phen)2L4/2](H2O)6
and
[(phen)2Cu(m-
interactions [44ꢁ49]. The chelating phen ligands of the
/
L)Cu(phen)2](HL)2(H2L)(H2O)4 (2). Within complex 1,
the [Cu2(phen)2] subunits are interlinked by sebacato
ligands into 2D grid-like open networks. The principal
2D layers exhibit nearly perfect coplanarity.
Each carboxylate group of the bridging sebacato
ligand offers one O atom, respectively, to coordinate
one Cu atom and to bridge two Cu atoms. As expected,
building blocks in complex
2 are the dinuclear
[(phen)2Cu(m-L)Cu(phen)2]2ꢂ complex cations resulting
from two [Cu(phen)2] moieties bischelated by sebacato
the CÃ
atom is 1.282 A, slightly longer than that (1.273 A) to
the monodentate carboxylate O atom, and the CÃ
bond lengths to the non-coordinating carboxylate O
/O bond length to the bidentate carboxylate O
˚
˚
ligands. In both complexes, significant pꢁ
/
p stacking
/O
interactions play important roles in supramolecular
assembly.
˚
atoms are averaged at 1.239 A.
Out of the three crystallographically distinct H2O
]
2
molecules intercalated between 2D ꢀ[Cu2(phen)2L4/2
2. Results and discussion
layers, one donates two hydrogen atoms to two non-
coordinating carboxyl O atoms of different sebacato
ligands belonging to the same layer, while the remaining
two participate in hydrogen bonds both to the non-
2.1. Syntheses
Our earlier investigation indicated that reactions of
equimolar CuCl2, 1,10-phenanthroline, sebacic acid
coordinating carboxyl O atom and to the third water O
˚
atom (d(OÁ Á ÁO)ꢀ
/
2.785ꢁ
/2.852 A,
Ú
/
(OÃ
/
HÁ Á ÁO)ꢀ
/
(H2Lꢀ
CH3OH/H2O produced [Cu(phen)L]×
6H2O [43] at pHꢀ
/
HOOCÃ
/
(CH2)8Ã
/
COOH) with Na2CO3 in
1448ꢁ1778).
/
/3H2O [42] and
[Cu2(phen)2(H2O)2(OH)2](HCO3)2×
/
/
6.4 and 10.2, respectively. However, reactions of phe-
nanthroline, sebacic acid and Cu(OH)2, which was
freshly precipitated by addition of NaOH to an aqueous
2.3. Structure of [(phen)2Cu(m-
L)Cu(phen)2](HL)2(H2L)(H2O)4 (2)
2
2H2O, yielded ꢀ[Cu2(phen)2L4/2]-
solution of CuCl2×
/
The crystal structure is composed of the centrosym-
metric dinuclear [(phen)2Cu(m-L)Cu(phen)2]2ꢂ complex
cations, twisted hydrogensebacate anions, linear sebacic
acid molecules and lattice H2O molecules.
The dinuclear complex cations are generated from
two [Cu(phen)2] moieties bischelated by one ‘Z’ shaped
sebacato ligand (Fig. 2). The Cu atoms are each
octahedrally surrounded by four N atoms from two
phen ligands and two O atoms from one carboxyl group
(H2O)6 (1) and [(phen)2Cu(m-L)Cu(phen)2](HL)2(H2L)-
(H2O)4 (2) at pHꢀ6.4 in EtOH/H2O (1:1 v/v) and
/
CH3OH/H2O (1:1 v/v), respectively. This finding implies
that a neutral solution is obviously favorable for the
sebacate anions to coordinate to Cu atoms. Addition-
ally, self-assembly of Cu(II) ions with phen and sebacic
acid is solvent dependent and the products rely on the
Cu(II) sources used even though the same solvent
mixture was employed.
of the bridging sebacato ligand to complete ‘4ꢂ
/
1ꢂ1’
/
coordination geometry with one pyridyl N atom and
2
2.2. Structure of ꢀ[Cu2(phen)2L4/2](H2O)6 (1)
one carboxyl O atom at the apical positions. The basal
˚
N
CuÃ
/
O(3) bond length is 1.976 A and the basal CuÃ
/
˚
2.044 A. The
The basic building subunits in 1 are the centrosym-
metric [Cu2N4O4] dimers resulting from edge-sharing of
two [CuN2O3] square pyramids via two m2 carboxylato
bond distances fall in the range 2.014ꢁ
/
axial CuÃN(4) and CuÃO(4) bond lengths are 2.241 and
/
/
˚
2.692 A, respectively. Two phen planes and the carboxyl
plane around the Cu atom stand nearly perpendicularly
to one another.
O atoms at the canted edges (Fig. 1). As usual, the basal
˚
O bond distances of 1.944 and 1.963 A are slightly
CuÃ
/
shorter than the CuÃ
/
N bond distances of 2.020 and
˚
O bond distance is 2.407 A
Within the crystal structure, the divalent complex
cations are arranged so that the symmetry related phen
ligands of the adjacent complex cations face antiparallel
˚
2.035 A, and the axial CuÃ
/
˚
(Table 2). The Cu atom is displaced by 0.049(1) A from

D.-Y. Wei et al. / Polyhedron 21 (2002) 1621ꢁ
/1628
1623
Fig. 1. (Top) ORTEP view of a selected subunit of the 2D 2ꢀ[Cu2(phen)2L4/2] layer with displacement ellipsoids (45% probability) and atomic labeling,
(middle) a section of the 2D 2ꢀ[Cu2(phen)2L4/2] layer, and (bottom) supramolecular assembly of 2D 2ꢀ[Cu2(phen)2L4/2] layers with H2O molecules in
tunnels parallel to [010] in 1; the pꢁp stacking interactions and hydrogen bondings are indicated by double arrows and dashed lines, respectively.
/
to each other and the mean phen-to-phen distance of
˚
complex cations are assembled into positively charged
open networks extending infinitely parallel to (100) (Fig.
3).
3.43 A indicates strong intercationic pꢁ
/
p stacking
interactions [44ꢁ49]. Through such interactions, the
/

1624
D.-Y. Wei et al. / Polyhedron 21 (2002) 1621ꢁ1628
/
Fig. 2. ORTEP view of (top) divalent [(phen)2Cu(m-L)Cu(phen)2]2ꢂ complex cation, (middle) hydrogensebacate anion and (bottom) sebacic acid
molecule in 2 with displacement ellipsoids (45% probability) and atomic labeling.
Along the [100] direction, the twisted hydrogenseba-
cate anions are linked into 1D zigzag chains via strong
(O(10)Ã
/
HÁ Á ÁO(2))ꢀ
/
1678. Moreover, the H2O molecules
are hydrogen bonded to each other. Such extensive
hydrogen bonds assemble the twisted hydrogensebacate
anions, linear sebacic molecules and water molecules to
form negatively charged open bilayers parallel to (001).
The resulting bilayers are held together by the inter-
weaving of the positively-charged open networks (Fig.
4). Furthermore, the carboxylate O(3) strongly coordi-
nated to Cu atom forms hydrogen bond to one water
molecule, which is found important for the interdigita-
head-to-tail hydrogen bonds (d(O(6)Á Á ÁO(8)b)ꢀ
/
2.562
1, y, z). Addi-
˚
A, Ú
/
(O(6)Ã
/
HÁ Á ÁO(8)b)ꢀ
/
1668, b: xꢂ
/
tionally, the carboxylate group of the hydrogensebacate
anion, via two carboxylate O atoms, is hydrogen bonded
to two crystallographically distinct H2O molecules
(Table 2), of which one accepts hydroxyl hydrogen
atom from the linear sebacic molecule to form a strong
˚
hydrogen bond with d(O(10)Á Á ÁO(2))ꢀ
/
2.531 A and Ú
/

D.-Y. Wei et al. / Polyhedron 21 (2002) 1621ꢁ
/1628
1625
Fig. 3. Supramolecular assembly of the divalent [(phen)2Cu(m-L)Cu(phen)2]2ꢂ complex cations via pꢁ
charged network in 2.
/
p stacking interactions into 2D positively
˚
tion of the negatively charged bilayers and the positively
charged networks.
For the present ‘Z’ shaped twisted sebacato
the O(4) atom (1.224 A), and the bite O(3)Ã
/
C(25)Ã
/
O(4) bond angle is 122.7(4)8. As far as the hydrogense-
bacate anions and sebacic acid molecules are concerned,
ligands, the CÃ
/
O bond length to the coordinating O(3)
˚
atom is 1.272 A, significantly longer than that to
all the CÃ
/
C and CÃ
/
O bond lengths are of normal
values.
Fig. 4. Negatively charged 2D hydrogen bonded networks with the complex cations in 2.

1626
D.-Y. Wei et al. / Polyhedron 21 (2002) 1621ꢁ1628
/
Comparison of the title complexes 1 and 2 with the
previously-reported [Cu(phen)L]×3H2O indicates that
the sebacate anion is an interesting flexible ligand
3.3. Crystal structure determination
/
The reflection intensities for complexes 1 and 2 were
collected at 293 K on a Bruker P4 diffractometer with
bridging Cu atoms in three modes, that is, (i) the ‘L’
shaped twisted sebacato ligands in [Cu(phen)L]×
bis-monodentately link Cu atoms into 1D chains which
are assembled via pꢁp stacking interactions into supra-
molecular bi-chains [42], (ii) the nearly linear sebacato
ligands in 1 tridentately interlink Cu atoms into 2D
open networks and (iii) the ‘Z’ shaped twisted sebacato
ligand bis-chelate two Cu atoms to form dinuclear
complex cations in 2.
/
3H2O
graphite-monochromated Mo Ka radiation (lꢀ
/
˚
0.71073 A) using the qꢁ2q scan technique. SHELXS-97
/
/
[50] and SHELXL-97 [51] programs were used for
structure determination and refinements. The structures
were solved by direct methods and refined with full-
matrix least-squares techniques. Non-hydrogen atoms
were refined anisotropically. Hydrogen atoms asso-
ciated with carbon atoms were generated geometrically,
while the aqua and hydroxyl hydrogen atoms were
located from the difference Fourier syntheses. Details of
crystal data, collection and refinement of the two
3. Experimental
Table 1
Summary of crystal data, data collection, structure solution and
refinement details for complexes 1 and 2
All chemicals of p.a. grade were commercially avail-
able and used without further purification. The C, H
and N microanalyses were performed with a Heraeus
1
2
Rapid*CHNO elemental analyzer. The FT-IR spectra
/
Empirical formula
Formula weight
Description
C
498.02
44H60Cu2N4O14
C88H108Cu2N8O20
1724.90
were recorded from KBr pellets in the range 4000ꢁ400
/
cmꢃ1 on a Protege 460 spectrometer.
blue block
0.47ꢄ0.22ꢄ0.18
293(2)
blue block
0.36ꢄ0.22ꢄ0.22
293(2)
Crystal size (mm)
Temperature (K)
Crystal system
Space group
2
3.1. Preparation of ꢀ[Cu2(phen)2L4/2](H2O)6 (1)
monoclinic
P21/n
triclinic
P
/1/
Unit cell dimensions
˚
Addition of 6.0 ml (1 M) NaOH to a stirred aqueous
solution of CuCl2×2H2O (0.43 g, 2.50 mmol) in 5.0 ml
a (A)
˚
11.095(2)
10.199(1)
21.221(4)
11.746(1)
12.259(1)
16.338(2)
80.03(1)
79.18(1)
69.16(1)
2145.0(4)
1
/
b (A)
˚
c (A)
H2O yielded a blue precipitate, which was separated,
washed with distilled water several times until free from
detectable Clꢃ ions and finally added to a stirred
solution of sebacic acid (0.51 g, 2.50 mmol) in 50 ml
EtOH/H2O (1:1 v/v). To the resulting suspension was
added phenanthroline monohydrate (0.50 g, 2.50 mmol).
The mixture was further stirred for approximately 30
min and the insoluble solid was filtered off. The filtrate
a (8)
b (8)
g (8)
101.26(1)
3
˚
Volume (A )
Z
2355.1(7)
2
Dcalc (g cmꢃ3
F(000)
)
1.405
1044
1.335
910
0.571
Absorption coefficient 0.971
(mmꢃ1
)
(pHꢀ6.4) was allowed to stand at room temperature.
/
Absorption correction empirical
Maximum and mini- 0.499, 0.478
mum transmission
empirical
0.806, 0.755
Slow evaporation for several days afforded a small
amount of dark blue crystals. Anal. Calc. for
C44H60Cu2N4O14: C, 53.06; H, 6.07; N, 5.62. Found:
C, 53.39; H, 5.98; N, 5.36%.
u Range (8)
Refinement method
0.95ꢁ/27.50
1.00ꢁ27.50
/
full-matrix least-
squares on F2
full-matrix least-
squares on F2
11290
Reflections collected 6926
Independent reflec- 5419 (0.0415)
tions (Rint
9842 (0.0372)
3.2. Preparation of [(phen)2Cu(m-
L)Cu(phen)2](HL)2(H2L)(H2O)4 (2)
)
Data/restraints/para- 3755/0/316
meters
5645/0/537
Goodness of fit on F2 1.085
1.029
An analogous procedure was employed except that 50
ml CH3OH/H2O (1:1 v/v) was used instead of EtOH/
H2O. Blue crystals were formed in a blue filtrate (pH
6.4) by slow evaporation for several days. Yield:
approximately 65%. Anal. Calc. for C44H60Cu2N4O14:
C, 61.26; H, 6.31; N, 6.50. Found: C, 60.83; H, 6.12; N,
6.89%. IR (cmꢃ1): 3410vs (br), 2929s, 2853s, 1570vs,
1515vs, 1426vs, 1302m, 1226m, 1146m, 1105m, 953vs,
724vs, 647m.
a
R1, wR2 [I ]2s(I)]
R1, wR2 (all data)
0.0506, 0.1229
0.0833, 0.1443
0.0778, 0.0000
0.0697, 0.1595
0.1340, 0.1950
0.0960, 0.4437
a
A, B values in
weighting scheme
b
Extinction coefficient 0.010(1)
Largest difference
0.008(1)
0.693, ꢃ0.408
0.868, ꢃ0.706
ꢃ3
˚
peak and hole (e A
)
wR2ꢀ[a w(Fo2ꢃFc2)2/a w(Fo2)2]1/2
.
a
b
wꢀ[s2(Fo2)ꢂ(AP)2ꢂBP]ꢃ1 with Pꢀ(Fo 2ꢂ2Fc2)/3.

D.-Y. Wei et al. / Polyhedron 21 (2002) 1621ꢁ
/1628
1627
Table 2
Selected bond lengths (A) and angles (8) for 1 and 2
˚
2
ꢀ [Cu2 (phen)2 L4/2 ](H2 O)6 (1)
a
Bond lengths
CuÃO(1)
1.944(2)
1.963(2)
CuÃN(1)
CuÃN(2)
2.020(2)
2.035(2)
CuÃO(3)b
2.407(2)
CuÃO(3)a
Bond angles
O(1)ÃCuÃO(3)a
O(1)ÃCuÃN(1)
O(1)ÃCuÃN(2)
O(1)ÃCuÃO(3)b
90.5(1)
93.3(1)
174.3(1)
88.2(1)
O(3)a ÃCuÃN(1)
O(3)a ÃCuÃN(2)
O(3)a ÃCuÃO(3)b
N(1)ÃCuÃN(2)
174.7(1)
94.8(1)
77.5(1)
81.3(1)
N(1)ÃCuÃO(3)b
N(2)ÃCuÃO(3)b
CuÃO(3a)ÃCuc
106.3(1)
95.1(1)
102.5(1)
b
[(phen)2 Cu(m-L)Cu(phen)2 ](HL)2 (H2 L)(H2 O)4 (2)
Bond lengths
CuÃO(3)
CuÃN(1)
1.976(3)
2.044(3)
CuÃN(2)
CuÃN(3)
2.014(3)
2.035(3)
CuÃN(4)
CuÃO(4)
2.241(3)
2.692(4)
Bond angles
O(3)ÃCuÃN(1)
O(3)ÃCuÃN(2)
O(3)ÃCuÃN(3)
O(3)ÃCuÃN(4)
O(3)ÃCuÃO(4)
173.2(1)
93.3(1)
91.0(1)
91.8(1)
53.3(1)
N(1)ÃCuÃN(2)
N(1)ÃCuÃN(3)
N(1)ÃCuÃN(4)
N(1)ÃCuÃO(4)
N(1)ÃCuÃO(4)
81.4(1)
94.0(1)
93.7(1)
N(2)ÃCuÃN(3)
N(2)ÃCuÃN(4)
N(2)ÃCuÃO(4)
N(3)ÃCuÃN(4)
N(3)ÃCuÃO(4)
174.0(1)
105.2(1)
93.3(1)
78.9(1)
85.8(1)
122.4(1)
141.8(1)
Hydrogen bonding contacts
DÃHÁ Á ÁA
DÃH
0.661
0.965
0.866
0.767
0.875
1.083
HÁ Á ÁA
2.222
1.886
2.040
1.933
1.703
1.465
DÁ Á ÁA
2.879
2.822
2.851
2.664
2.562
2.531
DÃHÁ Á ÁA
173
163
O(1)ÃH(AO1)Á Á ÁO(8)b
O(1)ÃH(BO1)Á Á ÁO(3)
O(2)ÃH(AO2)Á Á ÁO(1)c
O(2)ÃH(BO2)Á Á ÁO(7)
155
159
O(6)ꢁ
/
H(O6)Á Á ÁO(8)b
166
167
O(10)ÃH(O10)Á Á ÁO(2)
a
Symmetry codes: (a) ꢃxꢃ1/2, yꢂ1/2, ꢃzꢂ1/2; (b) xꢂ1/2, ꢃyꢂ3/2, zꢃ1/2; (c) ꢃx, 2ꢃy, ꢃz.
Symmetry codes: (a) ꢃxꢂ1, ꢃyꢂ1, ꢃzꢂ2; (b) xꢂ1, y, z; (c) xꢃ1, y, z; (d) ꢃx, ꢃyꢂ3, ꢃzꢂ2.
b
complexes are summarized in Table 1, while selected
interatomic distances and bond angles are listed in Table
2.
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