Some compounds of the type (LH)2SnX6 (X = Cl, Br), (LH)2SnX4Y2 , (LH)2MX5 (M = Sb, Bi; X = Cl, Br) and (LH)3M2I9 (M = Sb, Bi) (LH = piperidinium cation (pipdH) or morpholinium cation (morphH)) were prepared and characterized by means of the Raman and far-i.r. spectroscopy. The study of the vibrational spectra suggests for the hexahalo- and mixed-hexahalo-stannates(IV) an octahedral of trans-octahedral configuration, respectively. For the pentahaloantimonates(III) and bismuthates(III) the geometries of the complexes were found to depend on the hydrogen bonding ability of the counter cation. In fact the bismorpholiniumpentahalometallates(III) show square pyramidal configurations while the bispiperidinium complexes show octahedral configurations, in which two halogen atoms bridge the metals.

Solid state vibrational spectroscopy of some piperidinium and morpholinium salts of tin(IV), antimony(III) and bismuth(III) halide complexes / F., Cariati; Marcotrigiano, Giuseppe Onofrio; Menabue, Ledi; F., Morazzoni; Pellacani, Gian Carlo; G. M., Zanderighi. - In: SPECTROCHIMICA ACTA. PART A, MOLECULAR SPECTROSCOPY. - ISSN 0584-8539. - STAMPA. - 34A(1978), pp. 801-805.

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