Dimeric metallamacrocycles of 2 : 2 (metal-to-ligand) stoichiometry, [Pd{${alpha},{omega}$-bis(diphenylphosphino)oligothienylene}$Cl_2]_2$ 1-3 were prepared from a self-assembly reaction of $[Pd(CH_3CN)_2Cl_2]$ and ${alpha},{omega}$-bis-(diphenylphosphino)oligothienylene in 90-94% yields. The structures of metallamacrocycles 1-3 were determined by X-ray diffraction. 1 crystallizes in the monoclinic space group $P2_1$/n with a/$AA$ = 12.0737(13), b/$AA$ = 17.1993(18), c/$AA$ = 13.0951(14) and ${eta}/^{circ}$ = 101.505(2). 2 crystallizes in the triclinic space group P with a/$AA$ = 10.2634(4), b/$AA$ = 19.7855(9), c/$AA$ = 21.0851(9), ${alpha}/^{circ}$ = 63.1010(10), ${eta}/^{circ}$ = 86.5880(10), ${gamma}/^{circ}$ = 81.2280(10). 3 crystallizes in the triclinic space group P with a/$AA$ = 10.4353(19), b/$AA$ = 13.482(3), c/$AA$ = 13.816(3), ${alpha}/^{circ}$ = 108.027(4), ${eta}/^{circ}$ = 90.461(4), ${gamma}/^{circ}$ = 93.261(4). The UV spectra of 1-3 were characterized.