In(SAr)₃ As a Building Block for 3D and Helical Coordination Polymers

In­(SAr)3 (Ar = phenyl or p-tolyl) was employed as a building block to construct coordination polymers [(In­(SPh)3)3(tpt)2] (1, tpt = 2,4,6-tris­(4-pyridyl)­triazine), [In­(SPh)2(2-PCIH)] (2, 2-HPCIH = 2-pyridinecarbaldehyde isonicotinoylhydrazone), and [(In­(S­(p-tol))2)­(2-PCIH)]·2MeOH (3). Compound 1 is an intricate 3D coordination polymer displaying superstructure effects on its X-ray diffraction pattern, which have been additionally studied by transmission electron microscopy (TEM). Compounds 2 and 3 are helical coordination polymers. Whereas 3 comprises helices of both rotational handednesses in its crystal structure, 2 possesses only one enantiomeric form and thus exhibits a noncentrosymmetric structure that displays an SHG effect.