Synthesis and Crystal Structure of Bismuth(III) Complexes Bi(1,10‐phen)[S 2 CN(CH 3 ) 2 ] 2 (NO 3 ), {Bi(S 2 COCH 2 )[S 2 CNC 6 H 5 (CH 3 )] 2 } 2 and [Bi(S 2 CNBu 2 ) 2 (CH 3 OH)(NO 3 )] ∞

Three bismuth(III) complexes Bi(1,10‐phen)[S 2 CN(CH 3 ) 2 ] 2 (NO 3 ) ( 1 ), {Bi(S 2 COCH 3 )[S 2 CNC 6 H 5 (CH 3 )] 2 } 2 ( 2 ) and [Bi(S 2 CNBu 2 ) 2 (CH 3 OH)(NO 3 )] ∞ ( 3 ) were synthesized and characterized by elemental analysis and IR spectra. Their crystal structures were determined by X‐ray single crystal diffraction analysis. Studies show that complex 1 has a monomeric structure with the central bismuth atom eight‐coordinated in a capped distorted pentagonal bipyramidal geometry. The complex 2 takes centrosymmetric dimeric structure and the bismuth atoms are seven‐coordinated in distorted pentagonal bipyramidal geometry. In complex 3 , the bismuth atoms are seven‐coordinated in distorted pentagonal bipyramidal geometry by bridging nitrate O atoms and the resulting structure is one‐dimensional infinite chain polymer.