Polymeric diaqua­bis(μ4-benzene-1,2,4-tricarboxyl­ato)bis(2,2′-bipyridine)tricadmium(II)

Wang, X-.L.; Liu, F.-C.; Li, J.-R.; Ng, S.W.

doi:10.1107/S1600536804032520

Polymeric diaquabis(μ₄-benzene-1,2,4-tricarboxylato)bis(2,2′-bipyridine)tricadmium(II)

X.-L. Wang, F.-C. Liu, J.-R. Li and S. W. Ng

The benzene-1,2,4-tricarboxylate trianion in the polymeric title compound, [Cd₃(C₉H₃O₆)₂(C₁₀H₈N₂)₂(H₂O)₂]_n, uses the carboxylate groups in the 1,2-positions to chelate to a bipyridine-chelated Cd atom, which is simultaneously chelated by the 4-CO₂ group of an adjacent trianion. The O atoms of the 1,2-CO₂ groups that are not involved in chelation to the first Cd atom are each bonded to water-coordinated Cd atoms that lie on centres of inversion. The trianion links the Cd atoms to form a three-dimensional network structure, which is further consolidated by hydrogen bonds involving the water molecules.

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Supporting information

	Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536804032520/bt6564sup1.cif Contains datablocks I, global
	Structure factor file (CIF format) https://doi.org/10.1107/S1600536804032520/bt6564Isup2.hkl Contains datablock I

CCDC reference: 262263

checkCIF report

Key indicators

Single-crystal X-ray study
T = 295 K
Mean (C-C) = 0.005 Å
R factor = 0.023
wR factor = 0.091
Data-to-parameter ratio = 15.0

checkCIF/PLATON results

No syntax errors found



Alert level B
ABSTM02_ALERT_3_B  The ratio of expected to reported Tmax/Tmin(RR') is < 0.75
            Tmin and Tmax reported:      0.594     0.840
            Tmin' and Tmax expected:      0.831     0.835
            RR' =      0.711
            Please check that your absorption correction is appropriate.
PLAT061_ALERT_3_B Tmax/Tmin Range Test RR' too Large .............       0.71
PLAT222_ALERT_3_B Large Non-Solvent    H     Ueq(max)/Ueq(min) ...       4.23 Ratio
PLAT731_ALERT_1_B Bond    Calc     0.85(7), Rep   0.850(10) ......       7.00 su-Rat
              O1W  -H1W1    1.555   1.555
PLAT735_ALERT_1_B D-H     Calc     0.85(7), Rep   0.850(10) ......       7.00 su-Rat
              O1W  -H1#     1.555   1.555

Alert level C
PLAT042_ALERT_1_C Calc. and Rep. MoietyFormula Strings Differ ....          ?
PLAT220_ALERT_2_C Large Non-Solvent    C     Ueq(max)/Ueq(min) ...       2.79 Ratio
PLAT720_ALERT_4_C Number of Unusual/Non-Standard Label(s) ........          2
PLAT731_ALERT_1_C Bond    Calc     0.85(4), Rep   0.850(10) ......       4.00 su-Rat
              O1W  -H1W2    1.555   1.555
PLAT735_ALERT_1_C D-H     Calc     0.85(4), Rep   0.850(10) ......       4.00 su-Rat
              O1W  -H2#     1.555   1.555
PLAT736_ALERT_1_C H...A   Calc     1.79(7), Rep     1.79(2) ......       3.50 su-Rat
              H1#  -O2      1.555   1.555
PLAT736_ALERT_1_C H...A   Calc     2.00(5), Rep     2.00(2) ......       2.50 su-Rat
              H2#  -O6      1.555   2.667

   0 ALERT level A = In general: serious problem
   5 ALERT level B = Potentially serious problem
   7 ALERT level C = Check and explain
   0 ALERT level G = General alerts; check

   7 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
   1 ALERT type 2 Indicator that the structure model may be wrong or deficient
   3 ALERT type 3 Indicator that the structure quality may be low
   1 ALERT type 4 Improvement, methodology, query or suggestion

Computing details top

Data collection: RAPID AUTO (Rigaku Corporation, 1998); cell refinement: RAPID AUTO; data reduction: CrystalStructure (Rigaku/MSC, 2002); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEPII (Johnson, 1976); software used to prepare material for publication: SHELXL97.

diaquabis(µ₄-benzene-1,2,4-tricarboxylato)bis(2,2'-bipyridine)tricadmium(II) top

Crystal data top

[Cd₃(C₉H₃O₆)₂(C₁₀H₈N₂)₂(H₂O)₂]	Z = 1
M_r = 1099.83	F(000) = 538
Triclinic, P1	D_x = 1.994 Mg m⁻³
Hall symbol: -P 1	Mo Kα radiation, λ = 0.71073 Å
a = 7.683 (4) Å	Cell parameters from 8585 reflections
b = 11.341 (8) Å	θ = 3.1–27.5°
c = 11.344 (5) Å	µ = 1.80 mm⁻¹
α = 82.12 (2)°	T = 295 K
β = 71.01 (2)°	Block, colourless
γ = 79.56 (3)°	0.1 × 0.1 × 0.1 mm
V = 916.0 (9) Å³

Data collection top

Rigaku R-AXIS RAPID diffractometer	4131 independent reflections
Radiation source: fine-focus sealed tube	3756 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.015
ω scans	θ_max = 27.5°, θ_min = 3.1°
Absorption correction: multi-scan (ABSCOR; Higashi, 1995)	h = −7→9
T_min = 0.594, T_max = 0.840	k = −14→14
9039 measured reflections	l = −14→14

Refinement top

Refinement on F²	Primary atom site location: structure-invariant direct methods
Least-squares matrix: full	Secondary atom site location: difference Fourier map
R[F² > 2σ(F²)] = 0.023	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.091	H atoms treated by a mixture of independent and constrained refinement
S = 1.29	w = 1/[σ²(F_o²) + (0.0511P)² + 0.4079P] where P = (F_o² + 2F_c²)/3
4131 reflections	(Δ/σ)_max = 0.001
276 parameters	Δρ_max = 0.52 e Å⁻³
2 restraints	Δρ_min = −0.62 e Å⁻³

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å²) top

	x	y	z	U_iso*/U_eq
Cd1	0.5000	0.5000	0.5000	0.02166 (9)
Cd2	0.82745 (3)	0.73114 (2)	0.71104 (2)	0.02534 (9)
O1	0.6302 (3)	0.4291 (2)	0.6617 (2)	0.0288 (5)
O2	0.6246 (3)	0.6079 (2)	0.7234 (2)	0.0321 (5)
O3	1.0384 (3)	0.5773 (2)	0.6139 (2)	0.0332 (5)
O4	1.2512 (3)	0.4193 (2)	0.6261 (2)	0.0299 (5)
O5	1.2060 (3)	0.2927 (2)	1.0722 (2)	0.0367 (6)
O6	0.9342 (3)	0.2607 (2)	1.2042 (2)	0.0365 (5)
O1W	0.3916 (3)	0.6806 (2)	0.5939 (2)	0.0290 (5)
N1	0.8826 (4)	0.8370 (2)	0.5175 (3)	0.0300 (6)
N2	0.6263 (4)	0.9130 (3)	0.7299 (3)	0.0332 (6)
C1	1.0048 (5)	0.7931 (3)	0.4140 (3)	0.0377 (8)
C2	1.0384 (6)	0.8579 (4)	0.2986 (4)	0.0421 (8)
C3	0.9421 (6)	0.9716 (4)	0.2901 (4)	0.0442 (9)
C4	0.8144 (6)	1.0173 (3)	0.3968 (4)	0.0385 (8)
C5	0.7854 (5)	0.9476 (3)	0.5099 (3)	0.0274 (6)
C6	0.6505 (5)	0.9910 (3)	0.6280 (3)	0.0296 (7)
C7	0.5547 (6)	1.1079 (3)	0.6344 (4)	0.0424 (9)
C8	0.4354 (7)	1.1437 (4)	0.7464 (5)	0.054 (11)
C9	0.4089 (7)	1.0629 (4)	0.8513 (4)	0.0538 (11)
C10	0.5070 (6)	0.9486 (4)	0.8387 (4)	0.0454 (9)
C11	0.7764 (4)	0.4352 (3)	0.8144 (3)	0.0202 (5)
C12	0.9688 (4)	0.4311 (2)	0.7883 (3)	0.0196 (5)
C13	1.0500 (4)	0.3806 (3)	0.8803 (3)	0.0220 (5)
C14	0.9441 (4)	0.3348 (3)	0.9960 (3)	0.0235 (6)
C15	0.7553 (5)	0.3350 (3)	1.0190 (3)	0.0289 (7)
C16	0.6737 (4)	0.3840 (3)	0.9286 (3)	0.0280 (6)
C17	0.6720 (4)	0.4944 (3)	0.7234 (3)	0.0226 (6)
C18	1.0935 (4)	0.4801 (3)	0.6665 (3)	0.0213 (5)
C19	1.0351 (5)	0.2923 (3)	1.0961 (3)	0.0254 (6)
H1W1	0.473 (8)	0.670 (7)	0.632 (6)	0.11 (3)*
H1W2	0.293 (5)	0.689 (6)	0.655 (4)	0.08 (2)*
H1	1.0697	0.7160	0.4199	0.045*
H2	1.1245	0.8251	0.2280	0.050*
H3	0.9626	1.0173	0.2136	0.053*
H4	0.7485	1.0943	0.3927	0.046*
H7	0.5718	1.1611	0.5629	0.051*
H8	0.3725	1.2220	0.7519	0.065*
H9	0.3272	1.0851	0.9282	0.065*
H10	0.4896	0.8936	0.9088	0.055*
H13	1.1773	0.3775	0.8640	0.026*
H15	0.6842	0.3021	1.0953	0.035*
H16	0.5475	0.3828	0.9441	0.034*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Cd1	0.02258 (16)	0.02335 (16)	0.01827 (15)	−0.00377 (11)	−0.00646 (12)	0.00179 (11)
Cd2	0.02959 (14)	0.02097 (13)	0.02633 (14)	0.00167 (9)	−0.01411 (10)	0.00152 (8)
O1	0.0334 (12)	0.0296 (12)	0.0289 (11)	−0.0019 (9)	−0.0188 (10)	−0.0017 (9)
O2	0.0307 (11)	0.0267 (11)	0.0440 (13)	0.0019 (9)	−0.0226 (11)	−0.0004 (10)
O3	0.0332 (12)	0.0265 (11)	0.0289 (11)	0.0050 (9)	−0.0039 (10)	0.0075 (9)
O4	0.0214 (10)	0.0278 (11)	0.0299 (11)	0.0017 (8)	0.0005 (9)	0.0056 (9)
O5	0.0300 (12)	0.0533 (16)	0.0270 (11)	−0.0010 (11)	−0.0143 (10)	0.0035 (10)
O6	0.0364 (13)	0.0456 (15)	0.0248 (11)	−0.0043 (11)	−0.0119 (10)	0.0093 (10)
O1W	0.0248 (11)	0.0264 (11)	0.0339 (12)	0.0006 (9)	−0.0096 (10)	−0.0005 (9)
N1	0.0393 (15)	0.0203 (12)	0.0290 (13)	0.0020 (11)	−0.0130 (12)	0.0002 (10)
N2	0.0399 (16)	0.0258 (14)	0.0330 (14)	0.0052 (11)	−0.0157 (13)	−0.0019 (11)
C1	0.047 (2)	0.0262 (16)	0.0354 (18)	0.0042 (14)	−0.0122 (16)	−0.0022 (13)
C2	0.054 (2)	0.0374 (19)	0.0306 (17)	−0.0043 (16)	−0.0081 (16)	−0.0031 (14)
C3	0.065 (3)	0.0347 (19)	0.0314 (18)	−0.0117 (17)	−0.0148 (18)	0.0084 (14)
C4	0.051 (2)	0.0241 (16)	0.0438 (19)	−0.0027 (14)	−0.0241 (17)	0.0064 (14)
C5	0.0312 (15)	0.0221 (14)	0.0323 (16)	−0.0023 (12)	−0.0164 (13)	0.0006 (12)
C6	0.0305 (16)	0.0221 (15)	0.0395 (17)	0.0014 (12)	−0.0188 (14)	−0.0009 (12)
C7	0.045 (2)	0.0259 (17)	0.054 (2)	0.0058 (15)	−0.0198 (18)	0.0011 (15)
C8	0.054 (2)	0.034 (2)	0.070 (3)	0.0174 (18)	−0.020 (2)	−0.013 (2)
C9	0.054 (2)	0.050 (3)	0.047 (2)	0.015 (2)	−0.009 (2)	−0.0162 (19)
C10	0.050 (2)	0.043 (2)	0.0350 (19)	0.0090 (17)	−0.0108 (17)	−0.0039 (16)
C11	0.0181 (13)	0.0206 (13)	0.0222 (13)	−0.0003 (10)	−0.0084 (11)	−0.0010 (10)
C12	0.0191 (13)	0.0191 (13)	0.0204 (13)	−0.0004 (10)	−0.0078 (11)	−0.0004 (10)
C13	0.0193 (13)	0.0223 (14)	0.0230 (13)	0.0007 (10)	−0.0072 (11)	−0.0005 (10)
C14	0.0274 (14)	0.0227 (14)	0.0200 (13)	0.0014 (11)	−0.0103 (12)	0.0009 (10)
C15	0.0268 (15)	0.0337 (17)	0.0210 (14)	−0.0042 (12)	−0.0032 (12)	0.0047 (12)
C16	0.0209 (14)	0.0346 (17)	0.0264 (15)	−0.0036 (12)	−0.0061 (12)	0.0013 (12)
C17	0.0174 (12)	0.0272 (14)	0.0217 (13)	−0.0024 (10)	−0.0059 (11)	0.0010 (11)
C18	0.0203 (13)	0.0221 (13)	0.0233 (13)	−0.0035 (10)	−0.0097 (11)	0.0005 (10)
C19	0.0316 (15)	0.0243 (14)	0.0206 (14)	0.0010 (12)	−0.0122 (12)	0.0004 (11)

Geometric parameters (Å, º) top

Cd1—O1	2.347 (2)	C6—C7	1.394 (5)
Cd1—O1ⁱ	2.347 (2)	C7—C8	1.367 (6)
Cd1—O4ⁱⁱ	2.244 (2)	C8—C9	1.382 (7)
Cd1—O4ⁱⁱⁱ	2.244 (2)	C9—C10	1.377 (6)
Cd1—O1W	2.330 (3)	C11—C16	1.390 (4)
Cd1—O1Wⁱ	2.330 (3)	C11—C12	1.403 (4)
Cd2—O2	2.235 (3)	C11—C17	1.521 (4)
Cd2—O3	2.286 (3)	C12—C13	1.391 (4)
Cd2—O5^iv	2.370 (3)	C12—C18	1.502 (4)
Cd2—O6^iv	2.349 (3)	C13—C14	1.388 (4)
Cd2—N1	2.301 (3)	C14—C15	1.387 (5)
Cd2—N2	2.332 (3)	C14—C19	1.501 (4)
O1—C17	1.232 (4)	C15—C16	1.374 (5)
O2—C17	1.273 (4)	O1W—H1W1	0.85 (1)
O3—C18	1.251 (4)	O1W—H1W2	0.85 (1)
O4—C18	1.255 (4)	C1—H1	0.93
O5—C19	1.252 (4)	C2—H2	0.93
O6—C19	1.263 (4)	C3—H3	0.93
N1—C1	1.334 (5)	C4—H4	0.93
N1—C5	1.346 (4)	C7—H7	0.93
N2—C10	1.338 (5)	C8—H8	0.93
N2—C6	1.339 (4)	C9—H9	0.93
C1—C2	1.381 (5)	C10—H10	0.93
C2—C3	1.374 (6)	C13—H13	0.93
C3—C4	1.383 (6)	C15—H15	0.93
C4—C5	1.386 (5)	C16—H16	0.93
C5—C6	1.484 (5)

O1—Cd1—O1ⁱ	180	C7—C6—C5	122.1 (3)
O1—Cd1—O4ⁱⁱ	84.6 (1)	C8—C7—C6	119.6 (4)
O1—Cd1—O4ⁱⁱⁱ	95.4 (1)	C7—C8—C9	119.5 (4)
O1—Cd1—O1W	87.8 (1)	C10—C9—C8	118.0 (4)
O1—Cd1—O1Wⁱ	92.2 (1)	N2—C10—C9	123.0 (4)
O1ⁱ—Cd1—O4ⁱⁱ	95.4 (1)	C16—C11—C12	119.4 (3)
O1ⁱ—Cd1—O4ⁱⁱⁱ	84.6 (1)	C16—C11—C17	117.5 (3)
O1ⁱ—Cd1—O1W	92.2 (1)	C12—C11—C17	123.1 (3)
O1ⁱ—Cd1—O1Wⁱ	87.8 (1)	C13—C12—C11	118.8 (3)
O4ⁱⁱ—Cd1—O4ⁱⁱⁱ	180	C13—C12—C18	117.6 (3)
O4ⁱⁱ—Cd1—O1W	91.2 (1)	C11—C12—C18	123.7 (3)
O4ⁱⁱ—Cd1—O1Wⁱ	88.8 (1)	C14—C13—C12	121.1 (3)
O4ⁱⁱⁱ—Cd1—O1W	88.8 (1)	C15—C14—C13	119.6 (3)
O4ⁱⁱⁱ—Cd1—O1Wⁱ	91.2 (1)	C15—C14—C19	121.4 (3)
O1W—Cd1—O1Wⁱ	180	C13—C14—C19	118.9 (3)
O2—Cd2—O3	82.7 (1)	C16—C15—C14	119.8 (3)
O2—Cd2—N1	107.1 (1)	C15—C16—C11	121.2 (3)
O2—Cd2—N2	99.0 (1)	O1—C17—O2	125.2 (3)
O2—Cd2—O5^iv	95.1 (1)	O1—C17—C11	118.1 (3)
O3—Cd2—O5^iv	109.5 (1)	O2—C17—C11	116.6 (3)
O2—Cd2—O6^iv	138.4 (1)	O3—C18—O4	124.5 (3)
O3—Cd2—O6^iv	81.4 (1)	O3—C18—C12	119.7 (3)
O3—Cd2—N1	87.1 (1)	O4—C18—C12	115.8 (3)
O3—Cd2—N2	158.0 (1)	O5—C19—O6	121.7 (3)
O5^iv—Cd2—O6^iv	55.5 (1)	O5—C19—C14	119.9 (3)
O5^iv—Cd2—N1	153.9 (1)	O6—C19—C14	118.4 (3)
O5^iv—Cd2—N2	92.3 (1)	Cd1—O1W—H1W1	94 (5)
O6^iv—Cd2—N1	110.2 (1)	Cd1—O1W—H1W2	121 (4)
O6^iv—Cd2—N2	109.8 (1)	H1W1—O1W—H1W2	100 (6)
N1—Cd2—N2	71.3 (1)	N1—C1—H1	118.8
C17—O1—Cd1	124.2 (2)	C2—C1—H1	118.8
C17—O2—Cd2	121.7 (2)	C3—C2—H2	120.7
C18—O3—Cd2	126.0 (2)	C1—C2—H2	120.7
C18—O4—Cd1^v	122.9 (2)	C2—C3—H3	120.4
C19—O5—Cd2^iv	90.32 (18)	C4—C3—H3	120.4
C19—O6—Cd2^iv	91.0 (2)	C3—C4—H4	120.2
C1—N1—C5	119.4 (3)	C5—C4—H4	120.2
C1—N1—Cd2	122.9 (2)	C8—C7—H7	120.2
C5—N1—Cd2	117.7 (2)	C6—C7—H7	120.2
C10—N2—C6	119.0 (3)	C7—C8—H8	120.2
C10—N2—Cd2	123.7 (2)	C9—C8—H8	120.2
C6—N2—Cd2	116.7 (2)	C10—C9—H9	121.0
N1—C1—C2	122.4 (3)	C8—C9—H9	121.0
C3—C2—C1	118.7 (4)	N2—C10—H10	118.5
C2—C3—C4	119.2 (3)	C9—C10—H10	118.5
C3—C4—C5	119.5 (3)	C14—C13—H13	119.4
N1—C5—C4	120.8 (3)	C12—C13—H13	119.4
N1—C5—C6	116.8 (3)	C16—C15—H15	120.1
C4—C5—C6	122.4 (3)	C14—C15—H15	120.1
N2—C6—C7	120.9 (3)	C15—C16—H16	119.4
N2—C6—C5	116.9 (3)	C11—C16—H16	119.4

O4ⁱⁱⁱ—Cd1—O1—C17	64.6 (2)	N1—C5—C6—N2	−5.1 (4)
O4ⁱⁱ—Cd1—O1—C17	−115.4 (2)	C4—C5—C6—N2	176.1 (3)
O1W—Cd1—O1—C17	−23.9 (2)	N1—C5—C6—C7	173.9 (3)
O1Wⁱ—Cd1—O1—C17	156.1 (2)	C4—C5—C6—C7	−5.0 (5)
O3—Cd2—O2—C17	25.7 (2)	N2—C6—C7—C8	0.4 (6)
N1—Cd2—O2—C17	110.4 (2)	C5—C6—C7—C8	−178.4 (4)
N2—Cd2—O2—C17	−176.5 (2)	C6—C7—C8—C9	−1.1 (7)
O6^iv—Cd2—O2—C17	−42.5 (3)	C7—C8—C9—C10	0.8 (8)
O5^iv—Cd2—O2—C17	−83.3 (2)	C6—N2—C10—C9	−0.9 (7)
O2—Cd2—O3—C18	−76.1 (3)	Cd2—N2—C10—C9	170.3 (4)
N1—Cd2—O3—C18	176.3 (3)	C8—C9—C10—N2	0.2 (8)
N2—Cd2—O3—C18	−172.0 (3)	C16—C11—C12—C13	−3.0 (4)
O6^iv—Cd2—O3—C18	65.4 (3)	C17—C11—C12—C13	176.5 (3)
O5^iv—Cd2—O3—C18	16.8 (3)	C16—C11—C12—C18	178.0 (3)
O2—Cd2—N1—C1	−82.8 (3)	C17—C11—C12—C18	−2.5 (4)
O3—Cd2—N1—C1	−1.3 (3)	C11—C12—C13—C14	0.1 (4)
N2—Cd2—N1—C1	−176.7 (3)	C18—C12—C13—C14	179.1 (3)
O6^iv—Cd2—N1—C1	78.5 (3)	C12—C13—C14—C15	2.5 (5)
O5^iv—Cd2—N1—C1	129.9 (3)	C12—C13—C14—C19	−174.2 (3)
O2—Cd2—N1—C5	96.9 (2)	C13—C14—C15—C16	−2.1 (5)
O3—Cd2—N1—C5	178.3 (2)	C19—C14—C15—C16	174.5 (3)
N2—Cd2—N1—C5	2.9 (2)	C14—C15—C16—C11	−0.9 (5)
O6^iv—Cd2—N1—C5	−101.9 (2)	C12—C11—C16—C15	3.4 (5)
O5^iv—Cd2—N1—C5	−50.5 (4)	C17—C11—C16—C15	−176.1 (3)
O2—Cd2—N2—C10	77.8 (3)	Cd1—O1—C17—O2	11.9 (4)
O3—Cd2—N2—C10	170.5 (3)	Cd1—O1—C17—C11	−172.8 (2)
N1—Cd2—N2—C10	−177.1 (3)	Cd2—O2—C17—O1	−135.1 (3)
O6^iv—Cd2—N2—C10	−71.7 (3)	Cd2—O2—C17—C11	49.6 (3)
O5^iv—Cd2—N2—C10	−17.8 (3)	C16—C11—C17—O1	−78.9 (4)
O2—Cd2—N2—C6	−110.8 (3)	C12—C11—C17—O1	101.6 (3)
O3—Cd2—N2—C6	−18.1 (4)	C16—C11—C17—O2	96.8 (3)
N1—Cd2—N2—C6	−5.7 (2)	C12—C11—C17—O2	−82.7 (4)
O6^iv—Cd2—N2—C6	99.7 (3)	Cd2—O3—C18—O4	−150.7 (2)
O5^iv—Cd2—N2—C6	153.6 (3)	Cd2—O3—C18—C12	27.6 (4)
C5—N1—C1—C2	1.1 (6)	Cd1^v—O4—C18—O3	24.7 (4)
Cd2—N1—C1—C2	−179.2 (3)	Cd1^v—O4—C18—C12	−153.7 (2)
N1—C1—C2—C3	−0.1 (6)	C13—C12—C18—O3	−138.9 (3)
C1—C2—C3—C4	−0.3 (6)	C11—C12—C18—O3	40.1 (4)
C2—C3—C4—C5	−0.2 (6)	C13—C12—C18—O4	39.5 (4)
C1—N1—C5—C4	−1.7 (5)	C11—C12—C18—O4	−141.5 (3)
Cd2—N1—C5—C4	178.6 (3)	Cd2^iv—O5—C19—O6	−12.6 (3)
C1—N1—C5—C6	179.5 (3)	Cd2^iv—O5—C19—C14	165.0 (2)
Cd2—N1—C5—C6	−0.2 (4)	Cd2^iv—O6—C19—O5	12.7 (3)
C3—C4—C5—N1	1.3 (6)	Cd2^iv—O6—C19—C14	−165.0 (2)
C3—C4—C5—C6	−180.0 (3)	C15—C14—C19—O5	179.6 (3)
C10—N2—C6—C7	0.6 (5)	C13—C14—C19—O5	−3.8 (4)
Cd2—N2—C6—C7	−171.3 (3)	C15—C14—C19—O6	−2.7 (5)
C10—N2—C6—C5	179.5 (3)	C13—C14—C19—O6	173.9 (3)
Cd2—N2—C6—C5	7.7 (4)

Symmetry codes: (i) −x+1, −y+1, −z+1; (ii) x−1, y, z; (iii) −x+2, −y+1, −z+1; (iv) −x+2, −y+1, −z+2; (v) x+1, y, z.

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
O1W—H1W1···O2	0.85 (1)	1.79 (2)	2.624 (3)	164 (8)
O1W—H1W2···O6^vi	0.85 (1)	2.00 (2)	2.836 (4)	170 (6)

Symmetry code: (vi) −x+1, −y+1, −z+2.

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Polymeric diaqua­bis(μ4-benzene-1,2,4-tricarboxyl­ato)bis(2,2′-bipyridine)tricadmium(II)

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Polymeric diaquabis(μ₄-benzene-1,2,4-tricarboxylato)bis(2,2′-bipyridine)tricadmium(II)