1195984-83-8

Basic information

• Product Name: [(Ni(1,2-bis(diphenylphosphino)ethane))2(1,2,4,5-benzenetetrathiolate)]
• Synonyms: [(Ni(1,2-bis(diphenylphosphino)ethane))2(1,2,4,5-benzenetetrathiolate)]
• CAS NO: 1195984-83-8
• Molecular Weight: 1116.57
• Mol File: 1195984-83-8.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: [(Ni(1,2-bis(diphenylphosphino)ethane))2(1,2,4,5-benzenetetrathiolate)](CAS DataBase Reference)
• NIST Chemistry Reference: [(Ni(1,2-bis(diphenylphosphino)ethane))2(1,2,4,5-benzenetetrathiolate)](1195984-83-8)
• EPA Substance Registry System: [(Ni(1,2-bis(diphenylphosphino)ethane))2(1,2,4,5-benzenetetrathiolate)](1195984-83-8)

Safety Data

• Hazardous Substances Data: 1195984-83-8(Hazardous Substances Data)

Upstream product

• 14647-23-5 1,2-bis(diphenylphosphino)ethane nickel(II) chloride 
• 1007121-94-9 (1,2,4,5-benzenetetrathiolato)bis(dibutyltin) 
• 108970-88-3 benzo[1,2-d:4,5-d′]bis([1,3]dithiole)-2,6-dione 

Relevant articles and documents

Synthesis, Structures, and properties of 1,2,4,5-benzenetetrathiolate linked group 10 metal complexes

Dimetallic compounds [(P-P)M(S2C6H2S 2)M(P-P)] (M=Ni, Pd; P-P=chelating bis(phosphine), 3a-3f) are prepared from O=CS2C6H2S2C=O or nBu2SnS2C6H2S 2SnnBu2, which are protected forms of 1,2,4,5-benzenetetrathiolate. Selective monodeprotections of O=CS 2C6H2S2C=O or nBu 2SnS2C6H2S2Sn nBu2 lead to [(P-P)Ni(S2C6H 2S2C=O)] or [(P-P)Ni(S2C6H 2S2SnnBu2)]; the former Is used to prepare trimetallic compounds [(dcpe)Ni(S2C6H 2S2)M(S2C6H2S 2)Ni(dcpe)] (M = NI (6a) or Pt (6b); dcpe = 1,2- bis(dicyclohexylphosphino)ethane). Compounds 3a-3f are redox active and display two oxidation processes, of which the first is generally reversible. Dinickel compound [(dcpe)Ni(S2C6H2S2)Ni(dcpe) ] (3d) reveals two reversible oxidation waves with ΔE1/2=0.66 V, corresponding to Kc of 1.6 x 1011 for the mixed valence species. Electrochemical behavior is unstable to repeated scanning In the presence of [Bu4N][PF6] electrolyte but indefinitely stable with Na[BArF24] (BArF24 = tetrakis(3, 5-bis(trifluoromethyl)phenyl)borate), suggesting that the radical cation generated by oxidation Is vulnerable to reaction with PF6 -. Chemical oxidation of 3d with [Cp2Fe][BArF 24] leads to formation of [3d][BArF24]. Structural identification of [3d][BArF24] reveals appreciable shortening and lengthening of C-S and C-C bond distances, respectively, within the tetrathioarene fragment compared to charge-neutral 3d, indicating this to be the redox active moiety. Attempted oxidation of [(dppb)Ni(S2C 6H2S2)Ni(dppb)] (3c) (dppb = 1,2-bis(diphenylphosphino)benzene) with AgBArF24 produces [[(dppb)Ni(S2C6H2S2)Ni(dppb)] 2(w-Ag2)][BArF24]2, [4c][BArF 24]2, in which no redox chemistry has occurred. Crystal structures of bis(disulfide)-linked compounds [(P-P)Ni(S2C 6H2(w-S2)2C6H 2S2)Ni(P-P)] are reported. Near IR spectroscopy upon cationlc [3d]+ and neutral 6a reveals multiple intense absorptions In the 950-1400 nm region. Time-dependent density functional theory (DFT) calculations on a 6a model compound indicate that these absorptions are transitions between ligand-based π-type orbitais that have significant contributions from the sulfur p orbitais.