[N-(3,5-Dibromo-2-oxidobenzylidene)phenyl­alaninato-κ³O,N,O′]diphenyl­tin(IV)

The Sn atom of the title compound, [Sn(C₆H₅)₂(C₁₆H₁₁Br₂NO₃)], adopts a distorted SnNC₂O₂ trigonal–bipyramidal geometry and forms five- and six-membered chelate rings with the tridentate ligand.

Key indicators

• Single-crystal X-ray study
• T = 295 K
• Mean [sigma](C-C) = 0.006 Å
• R factor = 0.031
• wR factor = 0.078
• Data-to-parameter ratio = 17.1

checkCIF/PLATON results

No syntax errors found



Alert level C
PLAT062_ALERT_4_C Rescale T(min) & T(max) by .....................       0.98
PLAT220_ALERT_2_C Large Non-Solvent    C     Ueq(max)/Ueq(min) ...       2.85 Ratio
PLAT241_ALERT_2_C Check High      Ueq as Compared to Neighbors for        C27
PLAT331_ALERT_2_C Small Average Phenyl C-C Dist.   C11    -C16           1.37 Ang.
PLAT431_ALERT_2_C Short Inter HL..A Contact  Br2    ..  O3      ..       3.27 Ang.
PLAT431_ALERT_2_C Short Inter HL..A Contact  Br2    ..  O2      ..       3.35 Ang.

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

   0 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
   0 ALERT type 3 Indicator that the structure quality may be low
   1 ALERT type 4 Improvement, methodology, query or suggestion
   0 ALERT type 5 Informative message, check

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Computing details

Data collection: SMART (Bruker, 2002); cell refinement: SAINT (Bruker, 2002); 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 for Windows (Farrugia, 1997); software used to prepare material for publication: SHELXL97.

[N-(3,5-Dibromo-2-oxidophenylmethylene)phenylalaninato- κ³O,N,O']diphenyltin(IV)

Crystal data

[Sn(C6H5)2(C16H11Br2NO3)]	F(000) = 1360
Mr = 697.97	Dx = 1.777 Mg m^−3
Monoclinic, P21/c	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: -P 2ybc	Cell parameters from 8422 reflections
a = 11.2880 (7) Å	θ = 2.4–27.4°
b = 23.3977 (15) Å	µ = 4.07 mm^−1
c = 10.7391 (7) Å	T = 295 K
β = 113.074 (1)°	Plate, yellow
V = 2609.4 (3) Å^3	0.35 × 0.25 × 0.08 mm
Z = 4

Data collection

Bruker SMART APEX CCD diffractometer	5406 independent reflections
Radiation source: fine-focus sealed tube	4566 reflections with I > 2σ(I)
Graphite monochromator	Rint = 0.033
ω scans	θmax = 26.5°, θmin = 1.7°
Absorption correction: multi-scan (SADABS; Bruker, 2002)	h = −14→14
Tmin = 0.330, Tmax = 0.737	k = −29→29
20999 measured reflections	l = −13→13

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)] = 0.031	Hydrogen site location: inferred from neighbouring sites
wR(F^2) = 0.078	H-atom parameters constrained
S = 1.04	w = 1/[σ^2(Fo^2) + (0.037P)^2 + 1.2833P] where P = (Fo^2 + 2Fc^2)/3
5406 reflections	(Δ/σ)max = 0.001
316 parameters	Δρmax = 0.80 e Å^−3
0 restraints	Δρmin = −0.44 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
Sn1	0.474431 (18)	0.133619 (9)	0.195341 (19)	0.03985 (8)
Br2	1.12340 (4)	0.074850 (19)	0.73326 (4)	0.07264 (13)
Br1	0.68270 (4)	0.211054 (19)	0.64691 (4)	0.07253 (13)
N1	0.6396 (2)	0.10314 (11)	0.1593 (2)	0.0394 (5)
O1	0.6174 (2)	0.17443 (9)	0.3594 (2)	0.0484 (5)
O2	0.39397 (19)	0.08769 (10)	0.0115 (2)	0.0494 (5)
O3	0.4269 (2)	0.03756 (10)	−0.1470 (2)	0.0557 (6)
C1	0.7265 (3)	0.15108 (13)	0.4389 (3)	0.0441 (7)
C2	0.7791 (3)	0.16368 (14)	0.5787 (3)	0.0499 (7)
C3	0.8948 (3)	0.14149 (15)	0.6652 (3)	0.0550 (9)
H3	0.9271	0.1506	0.7568	0.066*
C4	0.9629 (3)	0.10560 (16)	0.6150 (3)	0.0537 (8)
C5	0.9167 (3)	0.09150 (15)	0.4800 (3)	0.0511 (8)
H5	0.9637	0.0675	0.4474	0.061*
C6	0.7973 (3)	0.11376 (14)	0.3914 (3)	0.0429 (7)
C7	0.7516 (3)	0.09433 (13)	0.2533 (3)	0.0429 (7)
H7	0.8092	0.0731	0.2294	0.051*
C8	0.6110 (3)	0.07839 (13)	0.0250 (3)	0.0410 (6)
H8	0.6581	0.0423	0.0362	0.049*
C9	0.4662 (3)	0.06597 (13)	−0.0444 (3)	0.0426 (7)
C10	0.6515 (3)	0.11819 (15)	−0.0644 (3)	0.0501 (8)
H10A	0.6215	0.1024	−0.1551	0.060*
H10B	0.6103	0.1550	−0.0701	0.060*
C11	0.7957 (3)	0.12672 (15)	−0.0119 (3)	0.0499 (8)
C12	0.8785 (4)	0.08146 (19)	0.0116 (4)	0.0720 (11)
H12	0.8454	0.0446	−0.0071	0.086*
C13	1.0095 (4)	0.0894 (3)	0.0621 (6)	0.0999 (16)
H13	1.0642	0.0581	0.0779	0.120*
C14	1.0589 (5)	0.1427 (4)	0.0887 (6)	0.118 (2)
H14	1.1477	0.1480	0.1249	0.141*
C15	0.9795 (6)	0.1886 (3)	0.0630 (6)	0.1069 (19)
H15	1.0136	0.2254	0.0786	0.128*
C16	0.8480 (4)	0.18060 (19)	0.0135 (4)	0.0727 (11)
H16	0.7939	0.2122	−0.0029	0.087*
C17	0.3792 (3)	0.21079 (13)	0.1141 (3)	0.0447 (7)
C18	0.3923 (4)	0.25718 (17)	0.1965 (4)	0.0668 (10)
H18	0.4502	0.2556	0.2864	0.080*
C19	0.3205 (5)	0.3062 (2)	0.1480 (5)	0.0861 (13)
H19	0.3306	0.3374	0.2049	0.103*
C20	0.2353 (5)	0.3086 (2)	0.0173 (6)	0.0900 (15)
H20	0.1871	0.3416	−0.0153	0.108*
C21	0.2202 (5)	0.2632 (2)	−0.0660 (5)	0.0924 (15)
H21	0.1612	0.2650	−0.1553	0.111*
C22	0.2926 (4)	0.21415 (18)	−0.0183 (4)	0.0712 (11)
H22	0.2826	0.1833	−0.0761	0.085*
C23	0.4083 (3)	0.07794 (13)	0.3088 (3)	0.0450 (7)
C24	0.4279 (4)	0.09094 (17)	0.4403 (4)	0.0639 (9)
H24	0.4746	0.1234	0.4810	0.077*
C25	0.3783 (4)	0.0560 (2)	0.5125 (4)	0.0778 (12)
H25	0.3930	0.0646	0.6019	0.093*
C26	0.3084 (5)	0.00912 (19)	0.4526 (5)	0.0803 (13)
H26	0.2732	−0.0137	0.5003	0.096*
C27	0.2897 (5)	−0.0046 (2)	0.3233 (5)	0.0921 (15)
H27	0.2435	−0.0373	0.2834	0.111*
C28	0.3392 (4)	0.02979 (16)	0.2516 (4)	0.0668 (10)
H28	0.3255	0.0203	0.1630	0.080*

Atomic displacement parameters (Ų)

	U^11	U^22	U^33	U^12	U^13	U^23
Sn1	0.02674 (11)	0.05319 (13)	0.03667 (12)	0.00029 (8)	0.00925 (8)	0.00585 (8)
Br2	0.0444 (2)	0.0902 (3)	0.0551 (2)	−0.00268 (18)	−0.01095 (17)	0.01378 (19)
Br1	0.0777 (3)	0.0912 (3)	0.0525 (2)	0.0041 (2)	0.0297 (2)	−0.00549 (19)
N1	0.0281 (12)	0.0524 (14)	0.0339 (12)	−0.0021 (10)	0.0080 (10)	0.0030 (10)
O1	0.0346 (11)	0.0615 (13)	0.0425 (12)	0.0009 (10)	0.0079 (9)	−0.0011 (10)
O2	0.0277 (10)	0.0711 (14)	0.0427 (12)	−0.0028 (10)	0.0066 (9)	−0.0045 (10)
O3	0.0425 (12)	0.0762 (15)	0.0390 (12)	−0.0071 (11)	0.0057 (10)	−0.0080 (11)
C1	0.0349 (15)	0.0535 (17)	0.0388 (15)	−0.0083 (13)	0.0087 (13)	0.0054 (13)
C2	0.0460 (18)	0.060 (2)	0.0421 (17)	−0.0077 (15)	0.0158 (14)	−0.0016 (15)
C3	0.050 (2)	0.068 (2)	0.0362 (16)	−0.0155 (16)	0.0051 (15)	0.0027 (15)
C4	0.0331 (16)	0.068 (2)	0.0436 (18)	−0.0073 (15)	−0.0032 (14)	0.0078 (16)
C5	0.0315 (15)	0.068 (2)	0.0426 (17)	−0.0032 (14)	0.0017 (13)	0.0059 (15)
C6	0.0283 (14)	0.0591 (18)	0.0347 (15)	−0.0051 (13)	0.0052 (12)	0.0045 (13)
C7	0.0308 (15)	0.0561 (18)	0.0399 (15)	0.0011 (13)	0.0119 (13)	0.0055 (13)
C8	0.0306 (14)	0.0543 (17)	0.0329 (14)	−0.0001 (12)	0.0069 (12)	0.0015 (12)
C9	0.0322 (15)	0.0554 (18)	0.0335 (15)	−0.0002 (13)	0.0055 (12)	0.0085 (13)
C10	0.0390 (17)	0.069 (2)	0.0396 (16)	−0.0051 (15)	0.0124 (14)	0.0032 (15)
C11	0.0410 (17)	0.075 (2)	0.0370 (16)	−0.0115 (16)	0.0185 (14)	−0.0060 (15)
C12	0.047 (2)	0.091 (3)	0.078 (3)	0.000 (2)	0.025 (2)	−0.011 (2)
C13	0.046 (2)	0.140 (5)	0.116 (4)	0.007 (3)	0.034 (3)	−0.012 (4)
C14	0.045 (3)	0.189 (7)	0.113 (5)	−0.031 (4)	0.026 (3)	−0.021 (4)
C15	0.086 (4)	0.133 (5)	0.097 (4)	−0.059 (4)	0.032 (3)	−0.038 (4)
C16	0.069 (3)	0.085 (3)	0.064 (2)	−0.021 (2)	0.026 (2)	−0.015 (2)
C17	0.0355 (16)	0.0569 (18)	0.0435 (16)	0.0040 (13)	0.0173 (13)	0.0106 (14)
C18	0.064 (2)	0.071 (2)	0.063 (2)	0.0108 (19)	0.0218 (19)	0.0032 (19)
C19	0.088 (3)	0.074 (3)	0.092 (3)	0.023 (2)	0.030 (3)	0.004 (2)
C20	0.084 (3)	0.078 (3)	0.109 (4)	0.033 (3)	0.039 (3)	0.034 (3)
C21	0.091 (3)	0.099 (4)	0.066 (3)	0.029 (3)	0.008 (2)	0.034 (3)
C22	0.076 (3)	0.073 (2)	0.052 (2)	0.011 (2)	0.012 (2)	0.0107 (18)
C23	0.0348 (15)	0.0563 (18)	0.0434 (16)	0.0022 (13)	0.0148 (13)	0.0091 (14)
C24	0.069 (2)	0.072 (2)	0.055 (2)	−0.0122 (19)	0.0292 (19)	0.0002 (18)
C25	0.089 (3)	0.096 (3)	0.062 (2)	0.001 (3)	0.044 (2)	0.016 (2)
C26	0.089 (3)	0.079 (3)	0.089 (3)	−0.008 (2)	0.051 (3)	0.025 (2)
C27	0.108 (4)	0.082 (3)	0.094 (3)	−0.035 (3)	0.049 (3)	0.005 (3)
C28	0.075 (3)	0.069 (2)	0.062 (2)	−0.019 (2)	0.033 (2)	−0.0006 (19)

Geometric parameters (Å, º)

Sn1—O1	2.095 (2)	C12—H12	0.9300
Sn1—C17	2.107 (3)	C13—C14	1.350 (8)
Sn1—C23	2.110 (3)	C13—H13	0.9300
Sn1—O2	2.114 (2)	C14—C15	1.356 (8)
Sn1—N1	2.168 (2)	C14—H14	0.9300
Br2—C4	1.900 (3)	C15—C16	1.380 (7)
Br1—C2	1.891 (3)	C15—H15	0.9300
N1—C7	1.288 (4)	C16—H16	0.9300
N1—C8	1.468 (4)	C17—C18	1.371 (5)
O1—C1	1.311 (4)	C17—C22	1.376 (5)
O2—C9	1.292 (4)	C18—C19	1.383 (6)
O3—C9	1.212 (4)	C18—H18	0.9300
C1—C6	1.407 (5)	C19—C20	1.357 (7)
C1—C2	1.413 (4)	C19—H19	0.9300
C2—C3	1.374 (5)	C20—C21	1.357 (7)
C3—C4	1.382 (5)	C20—H20	0.9300
C3—H3	0.9300	C21—C22	1.385 (6)
C4—C5	1.375 (4)	C21—H21	0.9300
C5—C6	1.410 (4)	C22—H22	0.9300
C5—H5	0.9300	C23—C28	1.371 (5)
C6—C7	1.440 (4)	C23—C24	1.375 (5)
C7—H7	0.9300	C24—C25	1.387 (5)
C8—C10	1.531 (4)	C24—H24	0.9300
C8—C9	1.535 (4)	C25—C26	1.356 (6)
C8—H8	0.9800	C25—H25	0.9300
C10—C11	1.512 (4)	C26—C27	1.358 (6)
C10—H10A	0.9700	C26—H26	0.9300
C10—H10B	0.9700	C27—C28	1.375 (5)
C11—C12	1.369 (5)	C27—H27	0.9300
C11—C16	1.373 (5)	C28—H28	0.9300
C12—C13	1.374 (6)
O1—Sn1—C17	93.28 (10)	C16—C11—C10	120.8 (3)
O1—Sn1—C23	97.24 (10)	C11—C12—C13	121.3 (4)
C17—Sn1—C23	121.98 (11)	C11—C12—H12	119.3
O1—Sn1—O2	157.50 (8)	C13—C12—H12	119.3
C17—Sn1—O2	94.95 (11)	C14—C13—C12	120.0 (5)
C23—Sn1—O2	96.06 (11)	C14—C13—H13	120.0
O1—Sn1—N1	82.35 (8)	C12—C13—H13	120.0
C17—Sn1—N1	122.87 (10)	C13—C14—C15	120.2 (5)
C23—Sn1—N1	115.06 (10)	C13—C14—H14	119.9
O2—Sn1—N1	75.59 (8)	C15—C14—H14	119.9
C7—N1—C8	118.5 (2)	C14—C15—C16	119.7 (5)
C7—N1—Sn1	124.2 (2)	C14—C15—H15	120.1
C8—N1—Sn1	115.56 (17)	C16—C15—H15	120.1
C1—O1—Sn1	125.1 (2)	C11—C16—C15	121.1 (5)
C9—O2—Sn1	121.04 (18)	C11—C16—H16	119.5
O1—C1—C6	123.0 (3)	C15—C16—H16	119.5
O1—C1—C2	120.1 (3)	C18—C17—C22	118.3 (3)
C6—C1—C2	116.9 (3)	C18—C17—Sn1	120.2 (2)
C3—C2—C1	122.1 (3)	C22—C17—Sn1	121.1 (3)
C3—C2—Br1	119.9 (3)	C17—C18—C19	121.0 (4)
C1—C2—Br1	117.9 (2)	C17—C18—H18	119.5
C2—C3—C4	119.5 (3)	C19—C18—H18	119.5
C2—C3—H3	120.2	C20—C19—C18	119.8 (5)
C4—C3—H3	120.2	C20—C19—H19	120.1
C5—C4—C3	121.2 (3)	C18—C19—H19	120.1
C5—C4—Br2	118.8 (3)	C19—C20—C21	120.3 (4)
C3—C4—Br2	120.0 (2)	C19—C20—H20	119.8
C4—C5—C6	119.4 (3)	C21—C20—H20	119.8
C4—C5—H5	120.3	C20—C21—C22	120.1 (4)
C6—C5—H5	120.3	C20—C21—H21	119.9
C1—C6—C5	120.9 (3)	C22—C21—H21	119.9
C1—C6—C7	123.0 (3)	C17—C22—C21	120.5 (4)
C5—C6—C7	116.1 (3)	C17—C22—H22	119.8
N1—C7—C6	127.0 (3)	C21—C22—H22	119.8
N1—C7—H7	116.5	C28—C23—C24	118.4 (3)
C6—C7—H7	116.5	C28—C23—Sn1	121.1 (2)
N1—C8—C10	111.8 (2)	C24—C23—Sn1	120.4 (3)
N1—C8—C9	109.5 (2)	C23—C24—C25	120.4 (4)
C10—C8—C9	109.5 (2)	C23—C24—H24	119.8
N1—C8—H8	108.6	C25—C24—H24	119.8
C10—C8—H8	108.6	C26—C25—C24	119.9 (4)
C9—C8—H8	108.6	C26—C25—H25	120.0
O3—C9—O2	124.4 (3)	C24—C25—H25	120.0
O3—C9—C8	119.1 (3)	C25—C26—C27	120.3 (4)
O2—C9—C8	116.5 (3)	C25—C26—H26	119.9
C11—C10—C8	112.9 (3)	C27—C26—H26	119.9
C11—C10—H10A	109.0	C26—C27—C28	120.0 (4)
C8—C10—H10A	109.0	C26—C27—H27	120.0
C11—C10—H10B	109.0	C28—C27—H27	120.0
C8—C10—H10B	109.0	C23—C28—C27	121.0 (4)
H10A—C10—H10B	107.8	C23—C28—H28	119.5
C12—C11—C16	117.6 (4)	C27—C28—H28	119.5
C12—C11—C10	121.6 (3)
O1—Sn1—N1—C7	30.4 (2)	N1—C8—C9—O2	11.9 (4)
C17—Sn1—N1—C7	119.4 (3)	C10—C8—C9—O2	−111.0 (3)
C23—Sn1—N1—C7	−64.0 (3)	N1—C8—C10—C11	65.6 (3)
O2—Sn1—N1—C7	−154.0 (3)	C9—C8—C10—C11	−172.8 (3)
O1—Sn1—N1—C8	−165.0 (2)	C8—C10—C11—C12	56.0 (4)
C17—Sn1—N1—C8	−76.0 (2)	C8—C10—C11—C16	−124.3 (3)
C23—Sn1—N1—C8	100.6 (2)	C16—C11—C12—C13	1.7 (6)
O2—Sn1—N1—C8	10.54 (19)	C10—C11—C12—C13	−178.6 (4)
C17—Sn1—O1—C1	−165.2 (2)	C11—C12—C13—C14	−0.4 (8)
C23—Sn1—O1—C1	72.0 (2)	C12—C13—C14—C15	−1.5 (9)
O2—Sn1—O1—C1	−53.8 (4)	C13—C14—C15—C16	2.1 (9)
N1—Sn1—O1—C1	−42.5 (2)	C12—C11—C16—C15	−1.0 (6)
O1—Sn1—O2—C9	7.8 (4)	C10—C11—C16—C15	179.2 (4)
C17—Sn1—O2—C9	118.9 (2)	C14—C15—C16—C11	−0.8 (8)
C23—Sn1—O2—C9	−118.2 (2)	O1—Sn1—C17—C18	−24.7 (3)
N1—Sn1—O2—C9	−3.8 (2)	C23—Sn1—C17—C18	76.0 (3)
Sn1—O1—C1—C6	38.0 (4)	O2—Sn1—C17—C18	176.3 (3)
Sn1—O1—C1—C2	−142.9 (2)	N1—Sn1—C17—C18	−107.7 (3)
O1—C1—C2—C3	−178.2 (3)	O1—Sn1—C17—C22	162.3 (3)
C6—C1—C2—C3	0.9 (5)	C23—Sn1—C17—C22	−97.1 (3)
O1—C1—C2—Br1	3.6 (4)	O2—Sn1—C17—C22	3.3 (3)
C6—C1—C2—Br1	−177.3 (2)	N1—Sn1—C17—C22	79.3 (3)
C1—C2—C3—C4	0.0 (5)	C22—C17—C18—C19	−0.1 (6)
Br1—C2—C3—C4	178.2 (2)	Sn1—C17—C18—C19	−173.4 (3)
C2—C3—C4—C5	−0.2 (5)	C17—C18—C19—C20	0.3 (7)
C2—C3—C4—Br2	179.7 (2)	C18—C19—C20—C21	0.0 (8)
C3—C4—C5—C6	−0.5 (5)	C19—C20—C21—C22	−0.5 (8)
Br2—C4—C5—C6	179.6 (2)	C18—C17—C22—C21	−0.4 (6)
O1—C1—C6—C5	177.5 (3)	Sn1—C17—C22—C21	172.8 (3)
C2—C1—C6—C5	−1.6 (5)	C20—C21—C22—C17	0.7 (7)
O1—C1—C6—C7	−4.9 (5)	O1—Sn1—C23—C28	−160.7 (3)
C2—C1—C6—C7	176.0 (3)	C17—Sn1—C23—C28	100.8 (3)
C4—C5—C6—C1	1.4 (5)	O2—Sn1—C23—C28	1.1 (3)
C4—C5—C6—C7	−176.4 (3)	N1—Sn1—C23—C28	−75.8 (3)
C8—N1—C7—C6	−178.6 (3)	O1—Sn1—C23—C24	22.9 (3)
Sn1—N1—C7—C6	−14.5 (4)	C17—Sn1—C23—C24	−75.6 (3)
C1—C6—C7—N1	−6.8 (5)	O2—Sn1—C23—C24	−175.3 (3)
C5—C6—C7—N1	170.9 (3)	N1—Sn1—C23—C24	107.8 (3)
C7—N1—C8—C10	−87.8 (3)	C28—C23—C24—C25	−0.1 (6)
Sn1—N1—C8—C10	106.7 (2)	Sn1—C23—C24—C25	176.5 (3)
C7—N1—C8—C9	150.7 (3)	C23—C24—C25—C26	−1.0 (7)
Sn1—N1—C8—C9	−14.8 (3)	C24—C25—C26—C27	1.8 (7)
Sn1—O2—C9—O3	177.3 (2)	C25—C26—C27—C28	−1.5 (8)
Sn1—O2—C9—C8	−3.5 (3)	C24—C23—C28—C27	0.4 (6)
N1—C8—C9—O3	−168.8 (3)	Sn1—C23—C28—C27	−176.1 (4)
C10—C8—C9—O3	68.2 (4)	C26—C27—C28—C23	0.4 (7)