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5. A shiny black plate (0.6×0.3×0.1 mm) of 3 is monoclinic: C18H10O2S8,, space group P21/n, Z=4, at 25°C, a=7.657(1), b=10.660(1), c=24.363(3) Å, β=90.54(1)°, V=1988.6(4) Å3, ρcalcd=1.719 Mg/m3, F(000)=1048. A total of 1080 frames were collected and integrated with a Bruker SAINT software package using a wide-frame integration algorithm. 20 315 reflections were collected (θ<21.98o), of which 2423 reflections were independent (Rint=20.44%) and 1578 with Fo>4σ(Fo). The structure was refined (255 parameters) to R1=4.61%, wR2=10.58%, GOF=0.939. A dark green plate (0.8×0.4×0.05 mm) of 6a is orthorhombic: C17H11NO3S7, space group P212121, Z=4, at 25°C, a=4.302(3), b=12.037(7), c=38.11(2) Å, V=1974(2) Å3, ρcalcd=1.688 Mg/m3, F(000)=1024. A total of 1080 frames were collected and integrated with Bruker SAINT software package using a wide-frame integration algorithm. 10151 reflections were collected (θ<24.93o), of which 3384 reflections were independent (Rint=11.11%) and 1985 with Fo>4σ(Fo). The structure was refined (255 parameters) to R1=5.43%, wR2=9.34%, GOF=0.881. Atomic coordinates, bond lengths and angles and thermal parameters have been deposited at the Cambridge Crystallographic Data Center.