Reaction of pentaphenylbismuth with flavianic acid

Tetraphenylbismuth flavianate [Ph4Bi]+[OSO2C10H4O8(OH-1)(NO2)2-2,4]- (1) has been obtained by interaction of equimolar quantities of pentaphenylbismuth and 2,4-dinitro-1-naphthol-7-sulfonic acid (flavianic acid) in benzene; then it has been structurally characterized after recrystallization from water. According to X-ray structural analysis performed at 293 K on an automatic four-circle diffractometer D8 Quest Bruker (two-coordinate CCD-detector, Mo Kα-radiation, λ = 0.71073 Å, graphite monochromator), crystal 1 has the following parameters: [C34H25N2O8SBi, M 830.60; triclinic syngony, symmetry group P-1; cell parameters: a = 10.344(4), b = 11.424(8), c = 13.805(6) Å; α = 81.32(2) deg., β = 80.73(3) deg., γ = 79.743(19) deg.; V = 1558.7(14) Å3; crystal size 0.25×0.13×0.08 mm; reflection index intervals -15 ≤ h ≤ 15, -17 ≤ k ≤ 17, -20 ≤ l ≤ 20; total reflections 100377; independent reflections 11321; Rint 0.0494; GOOF 1.028; R1 = 0.0356, wR2 = 0.0710; residual electron density 1.70/-0.94 e/Å3]; it contains several distorted tetrahedral cations of tetraphenylbismuthonium (the СBiC angles are 106.25(12)°-115.24(12)°, the Bi-C distance equals 2.191(3)-2.203(3) Å) and flavianate anions. The structural organization in crystal 1 is caused by weak intermolecular contacts of О···Н (2.04-2.67 Å). Complete tables of atomic coordinates, bond lengths and bond angles for structure 1 have been deposited at the Cambridge Crystallographic Data Centre (No. 2159998; deposit@ccdc.cam.ac.uk; https://www.ccdc.cam.ac.uk).