Preparation and crystal structure of a binuclear compound of methylmercury(II) containing bismuthiol I as a bridging ligand

Syntheses and Crystal Structures of Diorganotin Derivatives of 2,5‐Dimercapto‐1,3,4‐thiadiazole

“…To continue our study in this field, we chose another ligand: 2,5‐dimercapto‐1,3,4‐thiadiazole (H 2 dmt), which possesses a more complex deprotonated heterocyclic thioamide group (S−C−N−N−C−S) 2− than Hmnc. The heterocycle of H 2 dmt, with four available donors all of which can be utilized in bonding in varying combinations, as shown in Scheme ),12 may act as a fulcrum about which lattice construction is orchestrated in two or more dimensions.…”

Organosulfur/Conducting Polymer Composite Cathodes

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14] However, while several vibrational studies of DMcT and related compounds exist in the literature, [15][16][17][18][19] a survey of structural assignments based on the vibrational band data in those reports reveals many inconsistencies. This is due in large part to the complications introduced into the spectroscopy as a result of the thiol/ thione tautomerization possible for the thioamide groups in DMcT and some of its derivatives 15a,16b,c, [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] ͑Scheme II͒. Also the spectroscopic signature of DMcT and its derivatives ͑Scheme I͒ is complicated by simultaneous vibrational coupling between bands of similar frequency ͑especially those involving thione moieties͒ and extensive delocalization of electron density in the heterocycle due to the large number of possible resonance structures.…”

“…38 However, the bulk of the published studies on DMcT ͑i.e., Bismuthiol I͒ is in the context of using the compound as an analytical metal chelating agent. [16][17][18]25,[39][40][41][42][43][44] Notwithstanding a continuing interest in DMcT ͑more than 150 U.S. patents which use DMcT in some manner have been issued since 1990͒, few data regarding its fundamental chemical and electrochemical reactivity are available. For this reason, several groups have recently concentrated on such basic studies including investigations of the acid/base redox chemistry of DMcT using cyclic 7,45 and rotating disk 45d vol-tammetries, Raman 46 and electronic 45c,47 spectroscopies, mathematical modeling, and quartz crystal microgravimetry.…”