Octa­methyl-1κ²C,2κ²C,3κ²C,4κ²C-bis(μ₂-2-methyl­pyrazine-5-carboxyl­ato)-1:2κ²O:O;3:4κ²O:O-bis­(2-methyl­pyrazine-5-carboxyl­ato)-1κO,4κO-di-μ₃-oxido-1:2:3κ³O:O:O;2:3:4κ³O:O:O-tetra­tin(IV) hexa­hydrate

The title compound, [Sn₄(CH₃)₈(C₆H₅N₂O₂)₄O₂]·6H₂O, is a hydrated cluster containing four Sn atoms, built up by inversion symmetry around the central Sn₂O₂ ring. The Sn-atom coordination geometry might be regarded as very distorted SnO₃C₂ trigonal–bipyramidal or possibly as grossly distorted SnO₃C₂N octa­hedral. All the cluster non-H atoms, with the exception of the Sn-bonded methyl groups, lie on a mirror plane. Two of the water-mol­ecule O atoms have m site symmetry; the other occupies a twofold rotation axis.

Key indicators

• Single-crystal X-ray study
• T = 298 K
• Mean [sigma](C-C) = 0.011 Å
• R factor = 0.030
• wR factor = 0.079
• Data-to-parameter ratio = 14.4

checkCIF/PLATON results

No syntax errors found



Alert level A
PLAT415_ALERT_2_A Short Inter D-H..H-X       H3     ..  H4      ..       1.60 Ang.

Author Response: The water molecule H atoms are disordered, as described in the text. This short contact is thus an artefact of the H-atom disorder.

PLAT415_ALERT_2_A Short Inter D-H..H-X       H3     ..  H4      ..       1.60 Ang.

Author Response: The water molecule H atoms are disordered, as described in the text. This short contact is thus an artefact of the H-atom disorder.

PLAT780_ALERT_1_A Coordinates do not Form a Properly Connected Set          ?

Author Response: This seems to be a false alarm or an artefact of the H atom disorder?

Alert level C
PLAT042_ALERT_1_C Calc. and Rep. MoietyFormula Strings Differ ....          ?
PLAT062_ALERT_4_C Rescale T(min) & T(max) by .....................       0.89
PLAT241_ALERT_2_C Check High      Ueq as Compared to Neighbors for         N2
PLAT242_ALERT_2_C Check Low       Ueq as Compared to Neighbors for         C4
PLAT250_ALERT_2_C Large U3/U1 Ratio for Average U(i,j) Tensor ....       2.12
PLAT342_ALERT_3_C Low Bond Precision on C-C bonds (x 1000) Ang ...         11
PLAT380_ALERT_4_C Check Incorrectly? Oriented X(sp2)-Methyl Moiety         C6
PLAT380_ALERT_4_C Check Incorrectly? Oriented X(sp2)-Methyl Moiety        C12

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      0.895
            Tmax scaled      0.447 Tmin scaled      0.390

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

   2 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
   5 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
   3 ALERT type 4 Improvement, methodology, query or suggestion
   0 ALERT type 5 Informative message, check

---

Computing details

Data collection: SMART (Bruker, 1998); cell refinement: SAINT (Bruker, 1998); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97.

Octamethyl-1κ²C,2κ²C,3κ²C,4κ²C- di-µ₂-2-methylpyrazine-5-carboxylato-1:2κ²O:O;3:4κ²O:O-bis(2-methylpyrazine-5-carboxylato)-1κO,4κO-di-µ₃-oxido-1:2:3κ³O:O:O;2:3:4κ³O:O:O-tetratin(IV) hexahydrate

Crystal data

[Sn4O2(CH3)8(C6H5N2O2)4]·6H2O	F(000) = 1264
Mr = 1283.61	Dx = 1.768 Mg m^−3
Monoclinic, C2/m	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -C 2y	Cell parameters from 3146 reflections
a = 23.735 (6) Å	θ = 2.5–23.4°
b = 7.543 (2) Å	µ = 2.12 mm^−1
c = 16.468 (4) Å	T = 298 K
β = 125.137 (2)°	Block, colourless
V = 2411.1 (11) Å^3	0.47 × 0.43 × 0.38 mm
Z = 2

Data collection

Bruker SMART 1000 CCD diffractometer	2541 independent reflections
Radiation source: fine-focus sealed tube	1920 reflections with I > 2σ(I)
Graphite monochromator	Rint = 0.053
ω scans	θmax = 26.0°, θmin = 1.7°
Absorption correction: multi-scan (SADABS; Bruker, 1998)	h = −29→28
Tmin = 0.436, Tmax = 0.500	k = −9→9
6744 measured reflections	l = −17→20

Refinement

Refinement on F^2	Primary atom site location: structure-invariant direct methods
Least-squares matrix: full	Secondary atom site location: difference Fourier map
R[F^2 > 2σ(F^2)] = 0.030	Hydrogen site location: inferred from neighbouring sites
wR(F^2) = 0.079	H-atom parameters constrained
S = 1.09	w = 1/[σ^2(Fo^2) + (0.0165P)^2 + 4.5809P] where P = (Fo^2 + 2Fc^2)/3
2541 reflections	(Δ/σ)max = 0.001
176 parameters	Δρmax = 1.01 e Å^−3
0 restraints	Δρmin = −0.64 e Å^−3

Special details

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 (Ų)

	x	y	z	Uiso*/Ueq	Occ. (<1)
Sn1	0.44627 (2)	0.0000	0.26534 (3)	0.03740 (14)
Sn2	0.420929 (19)	0.0000	0.47260 (3)	0.03460 (14)
O1	0.3477 (2)	0.0000	0.2413 (3)	0.0463 (11)
O2	0.2334 (2)	0.0000	0.1516 (4)	0.082 (2)
O3	0.4180 (2)	0.0000	0.6105 (3)	0.0460 (11)
O4	0.3688 (3)	0.0000	0.6914 (4)	0.082 (2)
O5	0.47866 (18)	0.0000	0.4088 (3)	0.0376 (10)
N1	0.3466 (2)	0.0000	0.0782 (4)	0.0448 (14)
N2	0.2244 (3)	0.0000	−0.1107 (4)	0.076 (2)
N3	0.2938 (3)	0.0000	0.4355 (4)	0.0500 (15)
N4	0.1742 (3)	0.0000	0.4276 (4)	0.0670 (19)
C1	0.2878 (4)	0.0000	0.1589 (5)	0.0533 (18)
C2	0.2855 (3)	0.0000	0.0653 (5)	0.0447 (16)
C3	0.2251 (3)	0.0000	−0.0288 (5)	0.063 (2)
H3A	0.1834	0.0000	−0.0356	0.075*
C4	0.2850 (4)	0.0000	−0.0985 (5)	0.061 (2)
C5	0.3455 (4)	0.0000	−0.0041 (5)	0.063 (2)
H5A	0.3872	0.0000	0.0027	0.076*
C6	0.2847 (4)	0.0000	−0.1890 (6)	0.099 (4)
H6A	0.2379	0.0000	−0.2468	0.149*
H6B	0.3079	−0.1039	−0.1894	0.149*
C7	0.3657 (3)	0.0000	0.6137 (5)	0.0488 (17)
C8	0.2962 (3)	0.0000	0.5181 (4)	0.0391 (15)
C9	0.2357 (3)	0.0000	0.5119 (5)	0.058 (2)
H9A	0.2387	0.0000	0.5707	0.069*
C10	0.1715 (3)	0.0000	0.3440 (5)	0.0545 (19)
C11	0.2320 (3)	0.0000	0.3500 (5)	0.055 (2)
H11A	0.2293	0.0000	0.2913	0.066*
C12	0.1027 (4)	0.0000	0.2464 (6)	0.087 (3)
H12A	0.0670	0.0000	0.2571	0.130*
H12B	0.0984	−0.1039	0.2095	0.130*
C13	0.4566 (3)	0.2666 (7)	0.2408 (4)	0.0597 (14)
H13A	0.4163	0.3308	0.2239	0.090*
H13B	0.4618	0.2752	0.1873	0.090*
H13C	0.4964	0.3160	0.2999	0.090*
C14	0.3927 (2)	0.2678 (6)	0.4373 (4)	0.0555 (13)
H14A	0.4312	0.3347	0.4494	0.083*
H14B	0.3789	0.3133	0.4778	0.083*
H14C	0.3550	0.2777	0.3685	0.083*
O6	0.4854 (3)	0.0000	0.8706 (4)	0.095 (2)
H1	0.4437	0.0000	0.8092	0.114*
H2	0.4905	−0.0844	0.9130	0.114*	0.50
O7	0.0908 (3)	0.0000	0.0081 (4)	0.103 (2)
H3	0.1368	0.0000	0.0541	0.123*
H4	0.0613	−0.0792	0.0052	0.123*	0.50
O8	0.5000	0.7432 (9)	0.0000	0.099 (2)
H5	0.4948	0.8276	−0.0424	0.119*	0.50
H6	0.5296	0.6642	0.0029	0.119*	0.50

Atomic displacement parameters (Ų)

	U^11	U^22	U^33	U^12	U^13	U^23
Sn1	0.0383 (2)	0.0389 (3)	0.0346 (3)	0.000	0.0207 (2)	0.000
Sn2	0.0279 (2)	0.0357 (3)	0.0350 (2)	0.000	0.01513 (19)	0.000
O1	0.035 (2)	0.071 (3)	0.033 (2)	0.000	0.019 (2)	0.000
O2	0.038 (3)	0.163 (7)	0.044 (3)	0.000	0.024 (2)	0.000
O3	0.032 (2)	0.068 (3)	0.031 (2)	0.000	0.0148 (19)	0.000
O4	0.058 (3)	0.155 (6)	0.034 (3)	0.000	0.027 (3)	0.000
O5	0.028 (2)	0.048 (3)	0.029 (2)	0.000	0.0121 (18)	0.000
N1	0.033 (3)	0.066 (4)	0.032 (3)	0.000	0.017 (2)	0.000
N2	0.047 (4)	0.138 (7)	0.036 (3)	0.000	0.019 (3)	0.000
N3	0.034 (3)	0.084 (5)	0.034 (3)	0.000	0.021 (3)	0.000
N4	0.039 (3)	0.116 (6)	0.051 (4)	0.000	0.029 (3)	0.000
C1	0.044 (4)	0.061 (5)	0.050 (4)	0.000	0.024 (4)	0.000
C2	0.032 (3)	0.057 (5)	0.037 (4)	0.000	0.015 (3)	0.000
C3	0.039 (4)	0.107 (7)	0.041 (4)	0.000	0.023 (3)	0.000
C4	0.051 (4)	0.090 (6)	0.042 (4)	0.000	0.027 (4)	0.000
C5	0.056 (5)	0.089 (6)	0.043 (4)	0.000	0.028 (4)	0.000
C6	0.069 (6)	0.188 (12)	0.041 (5)	0.000	0.032 (5)	0.000
C7	0.046 (4)	0.062 (5)	0.045 (4)	0.000	0.030 (3)	0.000
C8	0.041 (3)	0.048 (4)	0.034 (3)	0.000	0.024 (3)	0.000
C9	0.049 (4)	0.093 (6)	0.042 (4)	0.000	0.033 (4)	0.000
C10	0.040 (4)	0.075 (6)	0.047 (4)	0.000	0.024 (3)	0.000
C11	0.043 (4)	0.088 (6)	0.034 (4)	0.000	0.023 (3)	0.000
C12	0.040 (4)	0.143 (10)	0.060 (5)	0.000	0.019 (4)	0.000
C13	0.062 (3)	0.053 (3)	0.055 (3)	−0.002 (3)	0.028 (3)	0.012 (3)
C14	0.057 (3)	0.045 (3)	0.066 (3)	0.014 (2)	0.037 (3)	0.008 (3)
O6	0.067 (4)	0.114 (6)	0.064 (4)	0.000	0.015 (3)	0.000
O7	0.055 (3)	0.168 (7)	0.076 (4)	0.000	0.032 (3)	0.000
O8	0.093 (4)	0.087 (5)	0.089 (4)	0.000	0.035 (4)	0.000

Geometric parameters (Å, º)

Sn1—O5	2.020 (4)	C2—C3	1.377 (9)
Sn1—C13^i	2.093 (5)	C3—H3A	0.930
Sn1—C13	2.093 (5)	C4—C5	1.382 (10)
Sn1—O1	2.136 (4)	C4—C6	1.485 (10)
Sn1—N1	2.589 (5)	C5—H5A	0.930
Sn1—O3^ii	2.642 (4)	C6—H6A	0.960
Sn2—O5^ii	2.034 (4)	C6—H6B	0.960
Sn2—C14^i	2.102 (5)	C7—C8	1.487 (9)
Sn2—C14	2.102 (5)	C8—C9	1.379 (8)
Sn2—O5	2.154 (4)	C9—H9A	0.930
Sn2—O3	2.312 (4)	C10—C11	1.381 (9)
Sn2—N3	2.712 (5)	C10—C12	1.494 (10)
O1—C1	1.281 (8)	C11—H11A	0.930
O2—C1	1.227 (8)	C12—H12A	0.960
O3—C7	1.273 (7)	C12—H12B	0.960
O3—Sn1^ii	2.642 (4)	C13—H13A	0.960
O4—C7	1.239 (8)	C13—H13B	0.960
O5—Sn2^ii	2.034 (4)	C13—H13C	0.960
N1—C2	1.338 (7)	C14—H14A	0.960
N1—C5	1.341 (8)	C14—H14B	0.960
N2—C4	1.335 (9)	C14—H14C	0.960
N2—C3	1.339 (8)	O6—H1	0.9215
N3—C11	1.326 (8)	O6—H2	0.8997
N3—C8	1.328 (7)	O7—H3	0.9008
N4—C9	1.314 (8)	O7—H4	0.9016
N4—C10	1.340 (8)	O8—H5	0.8993
C1—C2	1.511 (9)	O8—H6	0.9013
O5—Sn1—C13^i	102.58 (15)	C2—C1—Sn1	84.1 (4)
O5—Sn1—C13	102.58 (15)	N1—C2—C3	120.6 (6)
C13^i—Sn1—C13	147.8 (3)	N1—C2—C1	115.9 (5)
O5—Sn1—O1	81.70 (15)	C3—C2—C1	123.5 (6)
C13^i—Sn1—O1	101.63 (15)	N2—C3—C2	122.4 (6)
C13—Sn1—O1	101.63 (15)	N2—C3—H3A	118.8
O5—Sn1—N1	149.74 (15)	C2—C3—H3A	118.8
C13^i—Sn1—N1	84.18 (14)	N2—C4—C5	120.0 (7)
C13—Sn1—N1	84.18 (14)	N2—C4—C6	117.8 (6)
O1—Sn1—N1	68.04 (16)	C5—C4—C6	122.1 (7)
O5—Sn1—O3^ii	67.74 (13)	N1—C5—C4	122.7 (7)
C13^i—Sn1—O3^ii	85.61 (14)	N1—C5—H5A	118.6
C13—Sn1—O3^ii	85.61 (14)	C4—C5—H5A	118.6
O1—Sn1—O3^ii	149.44 (14)	C4—C6—H6A	109.3
N1—Sn1—O3^ii	142.52 (14)	C4—C6—H6B	109.5
O5^ii—Sn2—C14^i	106.05 (14)	H6A—C6—H6B	109.5
O5^ii—Sn2—C14	106.05 (14)	O4—C7—O3	124.2 (6)
C14^i—Sn2—C14	147.9 (3)	O4—C7—C8	117.7 (5)
O5^ii—Sn2—O5	75.26 (17)	O3—C7—C8	118.1 (6)
C14^i—Sn2—O5	93.22 (14)	O4—C7—Sn2	158.0 (5)
C14—Sn2—O5	93.22 (14)	C8—C7—Sn2	84.3 (3)
O5^ii—Sn2—O3	74.80 (14)	N3—C8—C9	119.7 (6)
C14^i—Sn2—O3	94.97 (14)	N3—C8—C7	116.9 (5)
C14—Sn2—O3	94.97 (14)	C9—C8—C7	123.4 (6)
O5—Sn2—O3	150.06 (14)	N4—C9—C8	123.6 (6)
O5^ii—Sn2—N3	138.86 (15)	N4—C9—H9A	118.2
C14^i—Sn2—N3	78.55 (13)	C8—C9—H9A	118.2
C14—Sn2—N3	78.55 (13)	N4—C10—C11	119.5 (6)
O5—Sn2—N3	145.88 (15)	N4—C10—C12	118.8 (6)
O3—Sn2—N3	64.06 (14)	C11—C10—C12	121.7 (7)
C1—O1—Sn1	128.7 (4)	N3—C11—C10	123.0 (6)
C1—O1—Sn2	141.7 (4)	N3—C11—H11A	118.5
Sn1—O1—Sn2	89.60 (13)	C10—C11—H11A	118.5
C7—O3—Sn2	128.5 (4)	C10—C12—H12A	109.6
C7—O3—Sn1^ii	138.8 (4)	C10—C12—H12B	109.4
Sn2—O3—Sn1^ii	92.71 (13)	H12A—C12—H12B	109.5
Sn1—O5—Sn2^ii	124.74 (18)	Sn1—C13—H13A	109.5
Sn1—O5—Sn2	130.52 (18)	Sn1—C13—H13B	109.5
Sn2^ii—O5—Sn2	104.74 (17)	H13A—C13—H13B	109.5
C2—N1—C5	116.8 (6)	Sn1—C13—H13C	109.5
C2—N1—Sn1	110.8 (4)	H13A—C13—H13C	109.5
C5—N1—Sn1	132.5 (4)	H13B—C13—H13C	109.5
C4—N2—C3	117.4 (6)	Sn2—C14—H14A	109.5
C11—N3—C8	117.1 (5)	Sn2—C14—H14B	109.5
C11—N3—Sn2	130.3 (4)	H14A—C14—H14B	109.5
C8—N3—Sn2	112.6 (4)	Sn2—C14—H14C	109.5
C9—N4—C10	116.9 (6)	H14A—C14—H14C	109.5
O2—C1—O1	124.6 (7)	H14B—C14—H14C	109.5
O2—C1—C2	118.8 (6)	H1—O6—H2	115.6
O1—C1—C2	116.6 (6)	H3—O7—H4	125.0
O2—C1—Sn1	157.1 (5)	H5—O8—H6	105.3
O5—Sn1—O1—C1	180.0	O5—Sn1—C1—O2	0.0
C13^i—Sn1—O1—C1	−78.78 (15)	C13^i—Sn1—C1—O2	104.33 (15)
C13—Sn1—O1—C1	78.78 (15)	C13—Sn1—C1—O2	−104.33 (15)
N1—Sn1—O1—C1	0.0	O1—Sn1—C1—O2	0.0
O3^ii—Sn1—O1—C1	180.0	N1—Sn1—C1—O2	180.000 (1)
O5—Sn1—O1—Sn2	0.0	O3^ii—Sn1—C1—O2	0.000 (2)
C13^i—Sn1—O1—Sn2	101.22 (15)	O5—Sn1—C1—O1	0.0
C13—Sn1—O1—Sn2	−101.22 (15)	C13^i—Sn1—C1—O1	104.33 (15)
N1—Sn1—O1—Sn2	180.0	C13—Sn1—C1—O1	−104.33 (15)
O3^ii—Sn1—O1—Sn2	0.0	N1—Sn1—C1—O1	180.000 (1)
O5^ii—Sn2—O1—C1	180.0	O3^ii—Sn1—C1—O1	0.0
C14^i—Sn2—O1—C1	78.78 (14)	O5—Sn1—C1—C2	180.0
C14—Sn2—O1—C1	−78.78 (14)	C13^i—Sn1—C1—C2	−75.67 (15)
O5—Sn2—O1—C1	180.0	C13—Sn1—C1—C2	75.67 (15)
O3—Sn2—O1—C1	0.0	O1—Sn1—C1—C2	180.0
N3—Sn2—O1—C1	0.0	N1—Sn1—C1—C2	0.0
O5^ii—Sn2—O1—Sn1	0.0	O3^ii—Sn1—C1—C2	180.0
C14^i—Sn2—O1—Sn1	−101.22 (14)	C5—N1—C2—C3	0.0
C14—Sn2—O1—Sn1	101.22 (14)	Sn1—N1—C2—C3	180.0
O5—Sn2—O1—Sn1	0.0	C5—N1—C2—C1	180.0
O3—Sn2—O1—Sn1	180.0	Sn1—N1—C2—C1	0.0
N3—Sn2—O1—Sn1	180.0	O2—C1—C2—N1	180.0
O5^ii—Sn2—O3—C7	180.000 (3)	O1—C1—C2—N1	0.0
C14^i—Sn2—O3—C7	−74.70 (14)	Sn1—C1—C2—N1	0.0
C14—Sn2—O3—C7	74.70 (14)	O2—C1—C2—C3	0.0
O5—Sn2—O3—C7	180.000 (3)	O1—C1—C2—C3	180.0
N3—Sn2—O3—C7	0.000 (2)	Sn1—C1—C2—C3	180.0
O5^ii—Sn2—O3—Sn1^ii	0.0	C4—N2—C3—C2	0.0
C14^i—Sn2—O3—Sn1^ii	105.30 (14)	N1—C2—C3—N2	0.0
C14—Sn2—O3—Sn1^ii	−105.30 (14)	C1—C2—C3—N2	180.0
O5—Sn2—O3—Sn1^ii	0.0	C3—N2—C4—C5	0.0
N3—Sn2—O3—Sn1^ii	180.0	C3—N2—C4—C6	180.0
C13^i—Sn1—O5—Sn2^ii	79.86 (15)	C2—N1—C5—C4	0.0
C13—Sn1—O5—Sn2^ii	−79.86 (15)	Sn1—N1—C5—C4	180.0
O1—Sn1—O5—Sn2^ii	180.0	N2—C4—C5—N1	0.0
N1—Sn1—O5—Sn2^ii	180.0	C6—C4—C5—N1	180.0
O3^ii—Sn1—O5—Sn2^ii	0.0	Sn2—O3—C7—O4	180.000 (2)
C13^i—Sn1—O5—Sn2	−100.14 (15)	Sn1^ii—O3—C7—O4	0.000 (3)
C13—Sn1—O5—Sn2	100.14 (15)	Sn2—O3—C7—C8	0.000 (2)
O1—Sn1—O5—Sn2	0.0	Sn1^ii—O3—C7—C8	180.000 (2)
N1—Sn1—O5—Sn2	0.0	Sn1^ii—O3—C7—Sn2	180.000 (5)
O3^ii—Sn1—O5—Sn2	180.0	O5^ii—Sn2—C7—O4	0.000 (4)
O5^ii—Sn2—O5—Sn1	180.0	C14^i—Sn2—C7—O4	106.07 (14)
C14^i—Sn2—O5—Sn1	74.25 (14)	C14—Sn2—C7—O4	−106.07 (14)
C14—Sn2—O5—Sn1	−74.25 (14)	O5—Sn2—C7—O4	0.000 (5)
O3—Sn2—O5—Sn1	180.0	O3—Sn2—C7—O4	0.000 (4)
N3—Sn2—O5—Sn1	0.0	N3—Sn2—C7—O4	180.000 (5)
O5^ii—Sn2—O5—Sn2^ii	0.0	O5^ii—Sn2—C7—O3	0.000 (2)
C14^i—Sn2—O5—Sn2^ii	−105.75 (14)	C14^i—Sn2—C7—O3	106.07 (14)
C14—Sn2—O5—Sn2^ii	105.75 (14)	C14—Sn2—C7—O3	−106.07 (14)
O3—Sn2—O5—Sn2^ii	0.0	O5—Sn2—C7—O3	0.000 (3)
N3—Sn2—O5—Sn2^ii	180.0	N3—Sn2—C7—O3	180.000 (1)
O5—Sn1—N1—C2	0.0	O5^ii—Sn2—C7—C8	180.000 (1)
C13^i—Sn1—N1—C2	105.04 (15)	C14^i—Sn2—C7—C8	−73.93 (14)
C13—Sn1—N1—C2	−105.04 (15)	C14—Sn2—C7—C8	73.93 (14)
O1—Sn1—N1—C2	0.0	O5—Sn2—C7—C8	180.000 (2)
O3^ii—Sn1—N1—C2	180.0	O3—Sn2—C7—C8	180.000 (3)
O5—Sn1—N1—C5	180.0	N3—Sn2—C7—C8	0.000 (1)
C13^i—Sn1—N1—C5	−74.96 (15)	C11—N3—C8—C9	0.000 (2)
C13—Sn1—N1—C5	74.96 (15)	Sn2—N3—C8—C9	180.000 (2)
O1—Sn1—N1—C5	180.0	C11—N3—C8—C7	180.000 (2)
O3^ii—Sn1—N1—C5	0.0	Sn2—N3—C8—C7	0.000 (1)
O5^ii—Sn2—N3—C11	180.000 (1)	O4—C7—C8—N3	180.000 (1)
C14^i—Sn2—N3—C11	−78.65 (15)	O3—C7—C8—N3	0.000 (2)
C14—Sn2—N3—C11	78.65 (15)	Sn2—C7—C8—N3	0.0
O5—Sn2—N3—C11	0.0	O4—C7—C8—C9	0.000 (2)
O3—Sn2—N3—C11	180.000 (2)	O3—C7—C8—C9	180.000 (3)
O5^ii—Sn2—N3—C8	0.0	Sn2—C7—C8—C9	180.000 (2)
C14^i—Sn2—N3—C8	101.35 (15)	C10—N4—C9—C8	0.000 (2)
C14—Sn2—N3—C8	−101.35 (15)	N3—C8—C9—N4	0.000 (1)
O5—Sn2—N3—C8	180.000 (2)	C7—C8—C9—N4	180.000 (2)
O3—Sn2—N3—C8	0.0	C9—N4—C10—C11	0.000 (1)
Sn1—O1—C1—O2	180.0	C9—N4—C10—C12	180.000 (2)
Sn2—O1—C1—O2	0.000 (1)	C8—N3—C11—C10	0.000 (1)
Sn1—O1—C1—C2	0.0	Sn2—N3—C11—C10	180.0
Sn2—O1—C1—C2	180.0	N4—C10—C11—N3	0.000 (1)
Sn2—O1—C1—Sn1	180.000 (2)	C12—C10—C11—N3	180.0

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

Hydrogen-bond geometry (Å, º)

D—H···A	D—H	H···A	D···A	D—H···A
O6—H1···O4	0.92	1.72	2.638 (8)	177
O6—H2···O8^iii	0.90	1.85	2.750 (6)	179
O7—H3···O2	0.90	1.90	2.798 (7)	180
O7—H4···O8^iv	0.90	1.87	2.774 (6)	180
O8—H5···O6^v	0.90	1.85	2.750 (6)	179
O8—H6···O7^vi	0.90	1.87	2.774 (6)	180

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