“…In general, several bonding modes were reported in bridging-isothiocyanato-polynuclear and/or -polymeric coordination compounds. These include the bonding modes µ 1,3 -NCS − [1,[5][6][7]10,[21][22][23][24][25][26][27][28][29][30][31], µ 1,1 -NCS − [32][33][34], µ 3,3 -NCS − [35][36][37], µ 1,1,3 -NCS − [38], µ 1,3,3 -NCS − [39], and µ 1,3,3,3 -NCS − [40]. In compounds where the coordinated isothiocyanate ion is acting as a terminal ligand, then according to Hard Soft Acid Base (HSAB) concept, soft Lewis acid metal ions prefer the soft Lewis S-site and hard metals prefer the soft site [41].…”