Poly[[tri-μ-cyanido-cyanido(1,4,10,13-tetra­oxa-7,16-diaza­cyclo­octa­deca­ne)barium(II)platinum(II)] hemihydrate]

Olmstead, M.M.; Beavers, C.M.; Paw U, L.

doi:10.1107/S1600536809008915

Poly[[tri-μ-cyanido-cyanido(1,4,10,13-tetraoxa-7,16-diazacyclooctadecane)barium(II)platinum(II)] hemihydrate]

M. M. Olmstead, C. M. Beavers and L. Paw U

The title compound, {[BaPt(CN)₄(C₁₂H₂₆N₂O₄)]·0.5H₂O}_n, is a two-dimensional coordination polymer in which the sheets are oriented approximately parallel to the ( $\overline{1}$ 01) set of crystal planes. In the crystal structure, disordered water molecules (half occupancy) connect the sheets into a three-dimensional network via intermolecular O—H

O hydrogen bonds. An N—H

N interaction is also present. The shortest Pt

Pt contacts are 7.5969 (4) Å by an inversion relationship and 7.6781 (4) Å by translation along the a axis.

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Supporting information

	Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536809008915/lh2782sup1.cif Contains datablocks I, global
	Structure factor file (CIF format) https://doi.org/10.1107/S1600536809008915/lh2782Isup2.hkl Contains datablock I

CCDC reference: 652437

checkCIF report

Key indicators

Single-crystal X-ray study
T = 93 K
Mean (C-C) = 0.003 Å
Disorder in solvent or counterion
R factor = 0.013
wR factor = 0.032
Data-to-parameter ratio = 19.2

checkCIF/PLATON results

No syntax errors found



Alert level B
PLAT774_ALERT_1_B Suspect X-Y Bond in CIF:   PT1    --  PT1     ..       7.60 Ang.
PLAT774_ALERT_1_B Suspect X-Y Bond in CIF:   PT1    --  PT1     ..       7.68 Ang.

Alert level C
            Value of measurement temperature given =    93.000
            Value of melting point given =     0.000
PLAT420_ALERT_2_C D-H Without Acceptor       N5     -   H5     ...          ?
PLAT420_ALERT_2_C D-H Without Acceptor       N6     -   H6     ...          ?
PLAT041_ALERT_1_C Calc. and Reported SumFormula    Strings  Differ          ?
PLAT042_ALERT_1_C Calc. and Reported MoietyFormula Strings  Differ          ?
PLAT045_ALERT_1_C Calculated and Reported Z Differ by ............       0.25 Ratio

Alert level G
ABSTM02_ALERT_3_G  When printed, the submitted absorption T values will be
            replaced by the scaled T values. Since the ratio of scaled T's
            is identical to the ratio of reported T values, the scaling
            does not imply a change to the absorption corrections used in
            the study.
            Ratio of Tmax expected/reported      0.928
            Tmax scaled      0.627 Tmin scaled      0.435
PLAT860_ALERT_3_G Note: Number of Least-Squares Restraints .......          3
PLAT062_ALERT_4_G Rescale T(min) & T(max) by .....................       0.93
PLAT302_ALERT_4_G Note Anion/Solvent Disorder ....................      50.00 Perc.

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

   5 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
   2 ALERT type 2 Indicator that the structure model may be wrong or deficient
   2 ALERT type 3 Indicator that the structure quality may be low
   2 ALERT type 4 Improvement, methodology, query or suggestion
   0 ALERT type 5 Informative message, check

Comment top

Tetracyanoplatinate salts have a propensity toward the formation of columnar stacking motifs. Ba[Pt(CN)₄], the accidental scintillation detector used by Roentgen (Bergsoe et al., 1962), has this characteristic with a close Pt···Pt distance of 3.321 Å. The compound has optical and electrical properties that are orientation specific with respect to the crystallographic axes (Williams et al., 1982). Even though the stacks of [Pt(CN)₄]^2- are supported by bridging Ba²⁺ via the N end of the cyano groups bonded to Pt, partial oxidation of these compounds, similar to that observed by a number of mono cationic salts, does not occur. Evidently, the mutual repulsion of the [Pt(CN)₄]^2- groups cannot be overcome by the inability of the large Ba²⁺ coordination sphere to compress in a manner than matches the compression of the Pt chain, a change of ca 20% in the Pt···Pt separation. In this research, crown ethers were used to alter the coordination environment at Ba in order to assess the structural changes that would occur. A earlier report (Olmstead, et al., 2005), focused on the salt [Ba(18-crown-6)(H₂O)₂][Pt(CN)₄], 2.

The asymmetric unit of the title compound, [Ba(diaza-18-crown-6)][Pt(CN)₄]^.0.5 H₂O, (1), is shown in Figure 1. Table 1 summarizes the coordination geometry for both Ba and Pt. The Ba²⁺ is coordinated by the diaza-18-crown-6 with average Ba—O distances of 2.80[2] Å and Ba—N distances of 2.89[4] Å (average deviations from the mean are given in square brackets). The Ba²⁺ is 0.39 (2) Å out of the N2O4 plane of the crown ether, giving the crown two distinct faces, an endo face and an exo face. The two aza-hydrogen atoms of the crown are in a trans- configuration. The Pt center shows normal square planar coordination geometry. The structure features a coordination polymer (Figure 2) in which barium achieves a total coordination number of nine. Three of the nitrogen ends of the cyano groups of [Pt(CN)₄]^2-, N1, N3, and N4, are coordinated to Ba1. The fourth cyano group is only involved in hydrogen bonding to the hemihydrate molecule which also participates in a hydrogen bond to N3. The C3—N3—Ba1 angle is more acute, at 135.06 (16)°, than either C1—N1—Ba1 (158.2 (2)°) or C4—N4—Ba1 (174.69 (17)°. One of the Ba—N bonds (N3) occurs on the exo face of the barium, and two (N1 and N4) occur on the endo face. These three bonds have an average length of 2.85[4] Å. The structure of (1) differs from the previously determined structure, (2), of [Ba(18-crown-6)(H₂O)₂][Pt(CN)₄] (Olmstead et al., 2005). In (2), Ba²⁺ has a coordination number of 10 and the donor set is comprised of six crown ether O, two water O and one cyano N on the exo side and one cyano N on the endo side. In (1), there is no water coordination to Ba. Instead, the water molecule is used in the creation of chains. Another interesting feature of (1) is the occurrence of a 12-atom (Ba—N—C—Pt—C—N)₂ square ring motif about a center of inversion, as depicted in Figure 2. This motif does not appear in (2), which is rather more of a criss-cross structure.

There are no short Pt···Pt interactions in (1); the closest is at 7.5969 (4) Å by an inversion relationship, and the next closest is at 7.6781 (4) Å, by translation along the a axis.

Related literature top

For [BaPt(CN)₄].4H₂O, see: Bergsoe et al. (1962); Williams et al. (1982). For the structure of a related salt, see: Olmstead et al. (2005).

Experimental top

A 61 mg portion of Ba[Pt(CN)₄]^.4H₂O (0.12 mmol) and 37 mg (0.14 mmol) of diaza-18-crown-6 were dissolved in methanol. The solution was heated until the compounds dissolved, then cooled until a powder formed. The powder was collected and recrystallized in a minimum of methanol. After recrystallization, the crystals were once again dissolved in warm methanol. This solution was dispensed into 5 mm o.d. tubes, and layered with either water or ethanol. Crystals of the title compound formed after about 24 h. The crystal selected came from the ethanol-layered tube.

Computing details top

Data collection: APEX2 (Bruker, 2007); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT (Bruker, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008), PovChem (Thiessen, 2000) and POV-RAY (Cason et al., 2004); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).

Figures top

	Fig. 1. The asymmetric unit of the title compound with thermal ellipsoids shown at the 50% probability level. The water molecule of O5 is at half-occupancy.
	Fig. 2. A view along the a axis direction showing the connection between cations, anions and water molecules. Color codes: Ba, yellow; Pt, orange; O, red; N, blue; C, gray; H, light gray. H-bonds are shown as dashed lines.

Poly[[tri-µ-cyanido-cyanido(1,4,10,13-tetraoxa-7,16- diazacyclooctadecane)barium(II)platinum(II)] hemihydrate] top

Crystal data top

[BaPt(CN)₄(C₁₂H₂₆N₂O₄)]·0.5H₂O	F(000) = 1340
M_r = 707.87	D_x = 2.036 Mg m⁻³
Monoclinic, P2₁/n	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2yn	Cell parameters from 7683 reflections
a = 7.6781 (4) Å	θ = 2.4–33.6°
b = 14.8881 (9) Å	µ = 7.78 mm⁻¹
c = 20.2325 (12) Å	T = 93 K
β = 93.254 (2)°	Prism, colorless
V = 2309.1 (2) Å³	0.18 × 0.10 × 0.06 mm
Z = 4

Data collection top

Bruker SMART APEXII diffractometer	5292 independent reflections
Radiation source: fine-focus sealed tube	5066 reflections with I > 2σ(I)
Graphite monochromator	R_int = 0.027
Detector resolution: 8.3 pixels mm^-1	θ_max = 27.5°, θ_min = 1.7°
ω scans	h = −9→9
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	k = −19→19
T_min = 0.469, T_max = 0.676	l = −26→26
30095 measured reflections

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)] = 0.013	Hydrogen site location: inferred from neighbouring sites
wR(F²) = 0.032	H atoms treated by a mixture of independent and constrained refinement
S = 1.03	w = 1/[σ²(F_o²) + (0.0143P)² + 1.2267P] where P = (F_o² + 2F_c²)/3
5292 reflections	(Δ/σ)_max = 0.003
276 parameters	Δρ_max = 0.72 e Å⁻³
3 restraints	Δρ_min = −0.42 e Å⁻³

Crystal data top

[BaPt(CN)₄(C₁₂H₂₆N₂O₄)]·0.5H₂O	V = 2309.1 (2) Å³
M_r = 707.87	Z = 4
Monoclinic, P2₁/n	Mo Kα radiation
a = 7.6781 (4) Å	µ = 7.78 mm⁻¹
b = 14.8881 (9) Å	T = 93 K
c = 20.2325 (12) Å	0.18 × 0.10 × 0.06 mm
β = 93.254 (2)°

Data collection top

Bruker SMART APEXII diffractometer	5292 independent reflections
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)	5066 reflections with I > 2σ(I)
T_min = 0.469, T_max = 0.676	R_int = 0.027
30095 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.013	3 restraints
wR(F²) = 0.032	H atoms treated by a mixture of independent and constrained refinement
S = 1.03	Δρ_max = 0.72 e Å⁻³
5292 reflections	Δρ_min = −0.42 e Å⁻³
276 parameters

Special details top

Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes.

Refinement. Refinement of F² against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F², conventional R-factors R are based on F, with F set to zero for negative F². The threshold expression of F² > σ(F²) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F² are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.

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

	x	y	z	U_iso*/U_eq	Occ. (<1)
Ba1	0.208165 (16)	0.303438 (8)	0.122058 (6)	0.01394 (3)
Pt1	0.519371 (10)	0.670691 (5)	0.139759 (4)	0.01325 (3)
O1	0.4491 (2)	0.29360 (10)	0.22989 (7)	0.0214 (3)
O2	0.4371 (2)	0.15673 (10)	0.13466 (8)	0.0215 (3)
O3	−0.0794 (2)	0.28946 (11)	0.02904 (8)	0.0238 (3)
O4	−0.0661 (2)	0.42719 (11)	0.12179 (8)	0.0243 (3)
O5	0.9018 (6)	1.0164 (3)	0.1191 (2)	0.0460 (10)	0.50
H5C	0.809 (6)	0.985 (4)	0.142 (3)	0.069*	0.50
H5D	0.944 (8)	1.063 (3)	0.151 (2)	0.069*	0.50
N1	0.6016 (3)	0.66373 (15)	−0.00967 (11)	0.0382 (6)
N2	0.6503 (3)	0.87107 (13)	0.13625 (10)	0.0296 (5)
N3	0.4574 (3)	0.67833 (12)	0.29213 (9)	0.0225 (4)
N4	0.3748 (3)	0.47391 (13)	0.13041 (9)	0.0249 (4)
N5	0.1327 (3)	0.39373 (13)	0.24229 (9)	0.0208 (4)
H5	0.067 (4)	0.361 (2)	0.2607 (14)	0.033 (8)*
N6	0.1924 (3)	0.15917 (12)	0.02347 (10)	0.0215 (4)
H6	0.251 (4)	0.1801 (17)	−0.0055 (15)	0.031 (8)*
C1	0.5688 (3)	0.66477 (15)	0.04481 (12)	0.0240 (5)
C2	0.6033 (3)	0.79805 (15)	0.13932 (10)	0.0200 (4)
C3	0.4780 (3)	0.67493 (13)	0.23617 (11)	0.0170 (4)
C4	0.4298 (3)	0.54565 (14)	0.13458 (10)	0.0175 (4)
C5	0.5553 (3)	0.21485 (16)	0.23661 (12)	0.0287 (5)
H5A	0.4929	0.1678	0.2605	0.034*
H5B	0.6649	0.2291	0.2626	0.034*
C6	0.5967 (3)	0.18077 (16)	0.16941 (13)	0.0265 (5)
H6A	0.6568	0.2280	0.1448	0.032*
H6B	0.6745	0.1278	0.1739	0.032*
C7	0.4592 (3)	0.09987 (15)	0.07817 (11)	0.0251 (5)
H7A	0.5213	0.0441	0.0921	0.030*
H7B	0.5289	0.1313	0.0456	0.030*
C8	0.2811 (3)	0.07755 (15)	0.04759 (11)	0.0262 (5)
H8A	0.2926	0.0352	0.0104	0.031*
H8B	0.2109	0.0480	0.0809	0.031*
C9	0.0142 (3)	0.14452 (17)	−0.00443 (13)	0.0305 (5)
H9A	−0.0576	0.1176	0.0295	0.037*
H9B	0.0161	0.1023	−0.0422	0.037*
C10	−0.0645 (3)	0.23237 (17)	−0.02739 (12)	0.0305 (5)
H10A	0.0104	0.2612	−0.0595	0.037*
H10B	−0.1811	0.2220	−0.0495	0.037*
C11	−0.1347 (3)	0.37872 (16)	0.01136 (12)	0.0268 (5)
H11A	−0.2267	0.3764	−0.0249	0.032*
H11B	−0.0351	0.4136	−0.0041	0.032*
C12	−0.2041 (3)	0.42288 (17)	0.07133 (12)	0.0284 (5)
H12A	−0.2463	0.4841	0.0600	0.034*
H12B	−0.3029	0.3877	0.0872	0.034*
C13	−0.1241 (3)	0.46060 (16)	0.18350 (12)	0.0271 (5)
H13A	−0.2026	0.4164	0.2030	0.033*
H13B	−0.1893	0.5174	0.1760	0.033*
C14	0.0335 (3)	0.47660 (15)	0.23000 (11)	0.0257 (5)
H14A	0.1096	0.5221	0.2106	0.031*
H14B	−0.0047	0.5004	0.2725	0.031*
C15	0.2917 (3)	0.40898 (16)	0.28449 (11)	0.0261 (5)
H15A	0.2594	0.4311	0.3283	0.031*
H15B	0.3630	0.4559	0.2643	0.031*
C16	0.3982 (3)	0.32446 (15)	0.29356 (11)	0.0258 (5)
H16A	0.5034	0.3366	0.3228	0.031*
H16B	0.3286	0.2775	0.3146	0.031*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
Ba1	0.01958 (6)	0.01186 (6)	0.01060 (6)	−0.00094 (4)	0.00280 (4)	0.00008 (4)
Pt1	0.01580 (4)	0.01269 (4)	0.01157 (4)	−0.00147 (3)	0.00343 (3)	−0.00084 (3)
O1	0.0295 (9)	0.0185 (8)	0.0160 (7)	0.0012 (6)	−0.0015 (6)	−0.0014 (6)
O2	0.0250 (8)	0.0182 (8)	0.0213 (8)	0.0018 (6)	0.0009 (6)	−0.0040 (6)
O3	0.0294 (9)	0.0220 (8)	0.0196 (8)	0.0003 (7)	−0.0030 (7)	0.0013 (6)
O4	0.0240 (8)	0.0266 (9)	0.0224 (8)	0.0054 (7)	0.0017 (6)	−0.0021 (7)
O5	0.050 (2)	0.040 (2)	0.048 (2)	−0.0111 (19)	0.008 (2)	−0.0052 (19)
N1	0.0621 (16)	0.0335 (12)	0.0210 (11)	−0.0269 (11)	0.0185 (11)	−0.0095 (9)
N2	0.0400 (12)	0.0207 (10)	0.0293 (11)	−0.0052 (9)	0.0132 (9)	−0.0031 (8)
N3	0.0286 (11)	0.0216 (10)	0.0176 (10)	0.0007 (8)	0.0046 (8)	−0.0011 (7)
N4	0.0339 (11)	0.0202 (10)	0.0215 (10)	−0.0049 (8)	0.0087 (8)	−0.0026 (8)
N5	0.0300 (10)	0.0161 (9)	0.0170 (9)	0.0001 (8)	0.0068 (8)	−0.0001 (7)
N6	0.0315 (11)	0.0162 (9)	0.0171 (9)	−0.0034 (8)	0.0029 (8)	−0.0001 (7)
C1	0.0327 (13)	0.0184 (11)	0.0215 (12)	−0.0098 (9)	0.0072 (10)	−0.0035 (8)
C2	0.0231 (11)	0.0212 (11)	0.0162 (10)	−0.0025 (9)	0.0067 (8)	−0.0024 (8)
C3	0.0190 (10)	0.0131 (10)	0.0189 (11)	−0.0016 (8)	0.0016 (8)	−0.0003 (8)
C4	0.0202 (10)	0.0205 (11)	0.0124 (9)	−0.0008 (8)	0.0057 (8)	−0.0016 (8)
C5	0.0322 (13)	0.0233 (12)	0.0295 (13)	0.0052 (10)	−0.0076 (10)	−0.0015 (10)
C6	0.0243 (12)	0.0212 (12)	0.0338 (14)	0.0004 (9)	−0.0005 (10)	−0.0029 (10)
C7	0.0347 (13)	0.0181 (11)	0.0231 (11)	0.0055 (9)	0.0069 (10)	−0.0046 (9)
C8	0.0403 (14)	0.0146 (11)	0.0234 (11)	0.0002 (10)	0.0014 (10)	−0.0055 (9)
C9	0.0391 (14)	0.0240 (12)	0.0275 (13)	−0.0070 (11)	−0.0062 (11)	−0.0067 (10)
C10	0.0369 (14)	0.0306 (13)	0.0229 (12)	−0.0044 (11)	−0.0086 (10)	−0.0040 (10)
C11	0.0267 (12)	0.0284 (13)	0.0251 (12)	0.0018 (10)	−0.0015 (9)	0.0053 (10)
C12	0.0268 (12)	0.0293 (13)	0.0289 (12)	0.0051 (10)	0.0009 (10)	0.0056 (10)
C13	0.0304 (12)	0.0226 (12)	0.0294 (12)	0.0074 (10)	0.0107 (10)	−0.0013 (10)
C14	0.0368 (13)	0.0188 (11)	0.0224 (11)	0.0043 (10)	0.0098 (10)	−0.0034 (9)
C15	0.0419 (14)	0.0229 (12)	0.0137 (10)	−0.0020 (10)	0.0021 (9)	−0.0047 (9)
C16	0.0376 (14)	0.0245 (12)	0.0148 (11)	−0.0031 (10)	−0.0035 (10)	−0.0031 (9)

Geometric parameters (Å, º) top

Ba1—O1	2.7831 (15)	N6—C9	1.466 (3)
Ba1—O2	2.8062 (15)	N6—H6	0.82 (3)
Ba1—O3	2.8261 (16)	C5—C6	1.502 (3)
Ba1—O4	2.7980 (15)	C5—H5A	0.9900
Ba1—N1ⁱ	2.814 (2)	C5—H5B	0.9900
Ba1—N3ⁱⁱ	2.8896 (19)	C6—H6A	0.9900
Ba1—N4	2.8431 (19)	C6—H6B	0.9900
Ba1—N5	2.8671 (18)	C7—C8	1.506 (3)
Ba1—N6	2.9291 (19)	C7—H7A	0.9900
Pt1—Pt1ⁱ	7.5969 (4)	C7—H7B	0.9900
Pt1—Pt1ⁱⁱⁱ	7.6781 (4)	C8—H8A	0.9900
Pt1—C1	1.981 (2)	C8—H8B	0.9900
Pt1—C2	2.003 (2)	C9—C10	1.503 (4)
Pt1—C3	1.995 (2)	C9—H9A	0.9900
Pt1—C4	1.985 (2)	C9—H9B	0.9900
O1—C5	1.430 (3)	C10—H10A	0.9900
O1—C16	1.442 (3)	C10—H10B	0.9900
O2—C6	1.424 (3)	C11—C12	1.504 (3)
O2—C7	1.440 (3)	C11—H11A	0.9900
O3—C10	1.433 (3)	C11—H11B	0.9900
O3—C11	1.434 (3)	C12—H12A	0.9900
O4—C12	1.431 (3)	C12—H12B	0.9900
O4—C13	1.438 (3)	C13—C14	1.509 (3)
O5—H5C	0.990 (10)	C13—H13A	0.9900
O5—H5D	0.989 (10)	C13—H13B	0.9900
N1—C1	1.145 (3)	C14—H14A	0.9900
N2—C2	1.148 (3)	C14—H14B	0.9900
N3—C3	1.153 (3)	C15—C16	1.506 (3)
N4—C4	1.150 (3)	C15—H15A	0.9900
N5—C14	1.464 (3)	C15—H15B	0.9900
N5—C15	1.467 (3)	C16—H16A	0.9900
N5—H5	0.81 (3)	C16—H16B	0.9900
N6—C8	1.463 (3)

O1—Ba1—O4	120.20 (4)	N4—C4—Pt1	178.3 (2)
O1—Ba1—O2	60.18 (4)	O1—C5—C6	109.86 (19)
O4—Ba1—O2	168.59 (5)	O1—C5—H5A	109.7
O1—Ba1—N1ⁱ	106.86 (6)	C6—C5—H5A	109.7
O4—Ba1—N1ⁱ	108.01 (6)	O1—C5—H5B	109.7
O2—Ba1—N1ⁱ	81.80 (6)	C6—C5—H5B	109.7
O1—Ba1—O3	167.83 (5)	H5A—C5—H5B	108.2
O4—Ba1—O3	59.19 (5)	O2—C6—C5	108.1 (2)
O2—Ba1—O3	117.70 (5)	O2—C6—H6A	110.1
N1ⁱ—Ba1—O3	84.06 (6)	C5—C6—H6A	110.1
O1—Ba1—N4	73.94 (5)	O2—C6—H6B	110.1
O4—Ba1—N4	75.43 (5)	C5—C6—H6B	110.1
O2—Ba1—N4	114.32 (5)	H6A—C6—H6B	108.4
N1ⁱ—Ba1—N4	68.93 (6)	O2—C7—C8	108.08 (18)
O3—Ba1—N4	115.93 (5)	O2—C7—H7A	110.1
O1—Ba1—N5	61.12 (5)	C8—C7—H7A	110.1
O4—Ba1—N5	60.30 (5)	O2—C7—H7B	110.1
O2—Ba1—N5	116.33 (5)	C8—C7—H7B	110.1
N1ⁱ—Ba1—N5	138.01 (6)	H7A—C7—H7B	108.4
O3—Ba1—N5	114.31 (5)	N6—C8—C7	110.40 (19)
N4—Ba1—N5	69.08 (5)	N6—C8—H8A	109.6
O1—Ba1—N3ⁱⁱ	77.91 (5)	C7—C8—H8A	109.6
O4—Ba1—N3ⁱⁱ	93.95 (5)	N6—C8—H8B	109.6
O2—Ba1—N3ⁱⁱ	74.83 (5)	C7—C8—H8B	109.6
N1ⁱ—Ba1—N3ⁱⁱ	149.73 (6)	H8A—C8—H8B	108.1
O3—Ba1—N3ⁱⁱ	89.94 (5)	N6—C9—C10	109.8 (2)
N4—Ba1—N3ⁱⁱ	138.73 (5)	N6—C9—H9A	109.7
N5—Ba1—N3ⁱⁱ	71.06 (5)	C10—C9—H9A	109.7
O1—Ba1—N6	119.68 (5)	N6—C9—H9B	109.7
O4—Ba1—N6	118.65 (5)	C10—C9—H9B	109.7
O2—Ba1—N6	59.51 (5)	H9A—C9—H9B	108.2
N1ⁱ—Ba1—N6	65.19 (6)	O3—C10—C9	108.59 (19)
O3—Ba1—N6	59.47 (5)	O3—C10—H10A	110.0
N4—Ba1—N6	134.12 (5)	C9—C10—H10A	110.0
N5—Ba1—N6	156.79 (6)	O3—C10—H10B	110.0
N3ⁱⁱ—Ba1—N6	86.21 (5)	C9—C10—H10B	110.0
C1—Pt1—C2	87.61 (9)	H10A—C10—H10B	108.4
C1—Pt1—C3	177.97 (10)	O3—C11—C12	108.50 (19)
C1—Pt1—C4	89.54 (8)	O3—C11—H11A	110.0
C3—Pt1—C2	92.50 (8)	C12—C11—H11A	110.0
C4—Pt1—C2	176.47 (9)	O3—C11—H11B	110.0
C4—Pt1—C3	90.42 (8)	C12—C11—H11B	110.0
C5—O1—C16	110.98 (17)	H11A—C11—H11B	108.4
C5—O1—Ba1	117.88 (12)	O4—C12—C11	108.26 (19)
C16—O1—Ba1	118.79 (13)	O4—C12—H12A	110.0
C6—O2—C7	113.74 (17)	C11—C12—H12A	110.0
C6—O2—Ba1	111.50 (12)	O4—C12—H12B	110.0
C7—O2—Ba1	119.14 (13)	C11—C12—H12B	110.0
C10—O3—C11	112.75 (17)	H12A—C12—H12B	108.4
C10—O3—Ba1	118.66 (13)	O4—C13—C14	108.62 (18)
C11—O3—Ba1	107.88 (13)	O4—C13—H13A	110.0
C12—O4—C13	112.47 (17)	C14—C13—H13A	110.0
C12—O4—Ba1	119.92 (13)	O4—C13—H13B	110.0
C13—O4—Ba1	119.74 (13)	C14—C13—H13B	110.0
H5C—O5—H5D	104 (3)	H13A—C13—H13B	108.3
C1—N1—Ba1ⁱ	158.2 (2)	N5—C14—C13	111.34 (19)
C3—N3—Ba1^iv	135.06 (16)	N5—C14—H14A	109.4
C4—N4—Ba1	174.69 (17)	C13—C14—H14A	109.4
C14—N5—C15	112.09 (18)	N5—C14—H14B	109.4
C14—N5—Ba1	112.29 (13)	C13—C14—H14B	109.4
C15—N5—Ba1	111.39 (13)	H14A—C14—H14B	108.0
C14—N5—H5	105 (2)	N5—C15—C16	111.70 (18)
C15—N5—H5	110 (2)	N5—C15—H15A	109.3
Ba1—N5—H5	106 (2)	C16—C15—H15A	109.3
C8—N6—C9	114.29 (18)	N5—C15—H15B	109.3
C8—N6—Ba1	112.42 (13)	C16—C15—H15B	109.3
C9—N6—Ba1	111.89 (14)	H15A—C15—H15B	107.9
C8—N6—H6	107 (2)	O1—C16—C15	109.27 (18)
C9—N6—H6	109 (2)	O1—C16—H16A	109.8
Ba1—N6—H6	101.8 (19)	C15—C16—H16A	109.8
N1—C1—Pt1	177.6 (2)	O1—C16—H16B	109.8
N2—C2—Pt1	177.15 (19)	C15—C16—H16B	109.8
N3—C3—Pt1	178.6 (2)	H16A—C16—H16B	108.3

O4—Ba1—O1—C5	162.79 (15)	N6—Ba1—O4—C13	142.47 (15)
O2—Ba1—O1—C5	−4.04 (14)	O1—Ba1—N5—C14	146.68 (17)
N1ⁱ—Ba1—O1—C5	−73.83 (16)	O4—Ba1—N5—C14	−20.73 (14)
O3—Ba1—O1—C5	79.3 (3)	O2—Ba1—N5—C14	171.63 (14)
N4—Ba1—O1—C5	−135.26 (16)	N1ⁱ—Ba1—N5—C14	63.44 (19)
N5—Ba1—O1—C5	150.13 (17)	O3—Ba1—N5—C14	−45.94 (16)
N3ⁱⁱ—Ba1—O1—C5	75.26 (15)	N4—Ba1—N5—C14	64.00 (15)
N6—Ba1—O1—C5	−3.21 (17)	N3ⁱⁱ—Ba1—N5—C14	−126.96 (16)
O4—Ba1—O1—C16	23.94 (15)	N6—Ba1—N5—C14	−114.77 (18)
O2—Ba1—O1—C16	−142.89 (15)	O1—Ba1—N5—C15	20.02 (13)
N1ⁱ—Ba1—O1—C16	147.32 (14)	O4—Ba1—N5—C15	−147.39 (16)
O3—Ba1—O1—C16	−59.6 (3)	O2—Ba1—N5—C15	44.97 (15)
N4—Ba1—O1—C16	85.89 (14)	N1ⁱ—Ba1—N5—C15	−63.22 (18)
N5—Ba1—O1—C16	11.28 (14)	O3—Ba1—N5—C15	−172.60 (13)
N3ⁱⁱ—Ba1—O1—C16	−63.59 (14)	N4—Ba1—N5—C15	−62.66 (14)
N6—Ba1—O1—C16	−142.06 (14)	N3ⁱⁱ—Ba1—N5—C15	106.38 (15)
O1—Ba1—O2—C6	−28.85 (14)	N6—Ba1—N5—C15	118.57 (17)
O4—Ba1—O2—C6	−124.0 (2)	O1—Ba1—N6—C8	16.47 (17)
N1ⁱ—Ba1—O2—C6	86.00 (15)	O4—Ba1—N6—C8	−149.75 (14)
O3—Ba1—O2—C6	164.83 (14)	O2—Ba1—N6—C8	17.30 (14)
N4—Ba1—O2—C6	23.63 (15)	N1ⁱ—Ba1—N6—C8	112.45 (17)
N5—Ba1—O2—C6	−54.05 (15)	O3—Ba1—N6—C8	−149.49 (17)
N3ⁱⁱ—Ba1—O2—C6	−113.42 (15)	N4—Ba1—N6—C8	112.74 (15)
N6—Ba1—O2—C6	151.98 (16)	N5—Ba1—N6—C8	−68.9 (2)
O1—Ba1—O2—C7	−164.49 (16)	N3ⁱⁱ—Ba1—N6—C8	−57.32 (15)
O4—Ba1—O2—C7	100.3 (3)	O1—Ba1—N6—C9	146.66 (14)
N1ⁱ—Ba1—O2—C7	−49.64 (15)	O4—Ba1—N6—C9	−19.55 (17)
O3—Ba1—O2—C7	29.19 (16)	O2—Ba1—N6—C9	147.49 (17)
N4—Ba1—O2—C7	−112.01 (15)	N1ⁱ—Ba1—N6—C9	−117.35 (17)
N5—Ba1—O2—C7	170.31 (14)	O3—Ba1—N6—C9	−19.29 (14)
N3ⁱⁱ—Ba1—O2—C7	110.94 (15)	N4—Ba1—N6—C9	−117.06 (16)
N6—Ba1—O2—C7	16.34 (14)	N5—Ba1—N6—C9	61.3 (2)
O1—Ba1—O3—C10	−104.1 (2)	N3ⁱⁱ—Ba1—N6—C9	72.88 (15)
O4—Ba1—O3—C10	165.23 (17)	C16—O1—C5—C6	176.36 (19)
O2—Ba1—O3—C10	−27.36 (16)	Ba1—O1—C5—C6	34.5 (2)
N1ⁱ—Ba1—O3—C10	50.13 (16)	C7—O2—C6—C5	−163.08 (18)
N4—Ba1—O3—C10	113.22 (15)	Ba1—O2—C6—C5	58.8 (2)
N5—Ba1—O3—C10	−169.25 (15)	O1—C5—C6—O2	−62.2 (2)
N3ⁱⁱ—Ba1—O3—C10	−100.14 (16)	C6—O2—C7—C8	178.29 (19)
N6—Ba1—O3—C10	−14.51 (15)	Ba1—O2—C7—C8	−47.0 (2)
O1—Ba1—O3—C11	126.2 (2)	C9—N6—C8—C7	−177.3 (2)
O4—Ba1—O3—C11	35.48 (12)	Ba1—N6—C8—C7	−48.3 (2)
O2—Ba1—O3—C11	−157.11 (12)	O2—C7—C8—N6	62.9 (2)
N1ⁱ—Ba1—O3—C11	−79.61 (13)	C8—N6—C9—C10	179.8 (2)
N4—Ba1—O3—C11	−16.52 (14)	Ba1—N6—C9—C10	50.6 (2)
N5—Ba1—O3—C11	61.00 (14)	C11—O3—C10—C9	173.3 (2)
N3ⁱⁱ—Ba1—O3—C11	130.11 (13)	Ba1—O3—C10—C9	45.8 (2)
N6—Ba1—O3—C11	−144.25 (14)	N6—C9—C10—O3	−64.2 (3)
O1—Ba1—O4—C12	−170.45 (14)	C10—O3—C11—C12	161.05 (19)
O2—Ba1—O4—C12	−81.9 (3)	Ba1—O3—C11—C12	−65.97 (19)
N1ⁱ—Ba1—O4—C12	66.73 (16)	C13—O4—C12—C11	−174.38 (19)
O3—Ba1—O4—C12	−4.57 (14)	Ba1—O4—C12—C11	−25.4 (2)
N4—Ba1—O4—C12	128.36 (16)	O3—C11—C12—O4	61.3 (2)
N5—Ba1—O4—C12	−157.69 (17)	C12—O4—C13—C14	−171.16 (19)
N3ⁱⁱ—Ba1—O4—C12	−92.14 (15)	Ba1—O4—C13—C14	39.8 (2)
N6—Ba1—O4—C12	−4.31 (17)	C15—N5—C14—C13	176.85 (18)
O1—Ba1—O4—C13	−23.67 (17)	Ba1—N5—C14—C13	50.6 (2)
O2—Ba1—O4—C13	64.9 (3)	O4—C13—C14—N5	−59.8 (2)
N1ⁱ—Ba1—O4—C13	−146.49 (15)	C14—N5—C15—C16	−176.63 (19)
O3—Ba1—O4—C13	142.21 (16)	Ba1—N5—C15—C16	−49.9 (2)
N4—Ba1—O4—C13	−84.86 (15)	C5—O1—C16—C15	178.20 (19)
N5—Ba1—O4—C13	−10.91 (15)	Ba1—O1—C16—C15	−40.3 (2)
N3ⁱⁱ—Ba1—O4—C13	54.64 (16)	N5—C15—C16—O1	60.5 (2)

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

Hydrogen-bond geometry (Å, º) top

D—H···A	D—H	H···A	D···A	D—H···A
O5—H5C···N2	0.99 (1)	2.09 (4)	2.934 (5)	142 (5)
O5—H5D···N3^v	0.99 (1)	2.18 (1)	3.159 (4)	171 (5)
N6—H6···N1ⁱ	0.82 (3)	2.60 (3)	3.096 (3)	121 (2)

Symmetry codes: (i) −x+1, −y+1, −z; (v) −x+3/2, y+1/2, −z+1/2.

Experimental details

Crystal data
Chemical formula	[BaPt(CN)₄(C₁₂H₂₆N₂O₄)]·0.5H₂O
M_r	707.87
Crystal system, space group	Monoclinic, P2₁/n
Temperature (K)	93
a, b, c (Å)	7.6781 (4), 14.8881 (9), 20.2325 (12)
β (°)	93.254 (2)
V (Å³)	2309.1 (2)
Z	4
Radiation type	Mo Kα
µ (mm⁻¹)	7.78
Crystal size (mm)	0.18 × 0.10 × 0.06

Data collection
Diffractometer	Bruker SMART APEXII diffractometer
Absorption correction	Multi-scan (SADABS; Sheldrick, 1996)
T_min, T_max	0.469, 0.676
No. of measured, independent and observed [I > 2σ(I)] reflections	30095, 5292, 5066
R_int	0.027
(sin θ/λ)_max (Å⁻¹)	0.649

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.013, 0.032, 1.03
No. of reflections	5292
No. of parameters	276
No. of restraints	3
H-atom treatment	H atoms treated by a mixture of independent and constrained refinement
Δρ_max, Δρ_min (e Å⁻³)	0.72, −0.42

Computer programs: APEX2 (Bruker, 2007), SAINT (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008), PovChem (Thiessen, 2000) and POV-RAY (Cason et al., 2004).

Selected geometric parameters (Å, º) top

Ba1—O1	2.7831 (15)	Ba1—N6	2.9291 (19)
Ba1—O2	2.8062 (15)	Pt1—Pt1ⁱ	7.5969 (4)
Ba1—O3	2.8261 (16)	Pt1—Pt1ⁱⁱⁱ	7.6781 (4)
Ba1—O4	2.7980 (15)	Pt1—C1	1.981 (2)
Ba1—N1ⁱ	2.814 (2)	Pt1—C2	2.003 (2)
Ba1—N3ⁱⁱ	2.8896 (19)	Pt1—C3	1.995 (2)
Ba1—N4	2.8431 (19)	Pt1—C4	1.985 (2)
Ba1—N5	2.8671 (18)

C1—Pt1—C2	87.61 (9)	C3—Pt1—C2	92.50 (8)
C1—Pt1—C3	177.97 (10)	C4—Pt1—C2	176.47 (9)
C1—Pt1—C4	89.54 (8)	C4—Pt1—C3	90.42 (8)

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