A new stable organic metal based on the BEDO-TTF donor and the doubly charged nitroprusside anion, (BEDO-TTF)4[Fe(CN)5NO]

Abstract

BEDO-TTF) 4 [Fe(CN) 5 NO] was synthesized by electrocrystallization using the nitroprussides M 2 [Fe(CN) 5 NO]?2H 2 O (M~K, Rb) as supporting electrolytes and TCE (1,1,2-trichloroethane) and DCE (1,2dichloroethane) as solvents. The crystal structure of this new salt (a~4.0251(3), b~15.266(2), c~19.259(2) A Ê , a~97.02(1), b~93.23(1), c~96.04(1)³, V~1165.1(2) A Ê 3 , Z~3/4, space group P1 Å ) is characterized by the presence of b@-type radical cation layers and anion layers containing disordered nitroprusside anions. The stoichiometry was con®rmed by a micro-Raman spectroscopic study and the band structure and Fermi surface of this new salt were studied by means of the extended Hu È ckel tight binding method. (BEDO-TTF) 4 [Fe(CN) 5 NO] is a two dimensional metal stable down to liquid helium temperatures.

Anion Conformation and Physical Properties in BETS Salts with the Nitroprusside Anion and its Related Ruthenium Halide (X = Cl, Br) Mononitrosyl Complexes: θ-(BETS)4[Fe(CN)5NO], (BETS)2[RuBr5NO], and (BETS)2[RuCl5NO]

“…Only one crown of electron density is evidenced from the Fourier map, which leads to the representation of the anion shown in Figure 3, a. A similar, not resolved disorder of the nitroprusside anion has also been observed in (BEDO‐TTF) 4 [Fe(CN) 5 NO] 2c…”

Step‐by‐Step Construction of the Electronic Structure of Molecular Conductors: Conceptual Aspects and Applications

“…Two structurally different situations are afforded by the salts (BEDO-TTF) 3 Cu 2 (NCS) 3 [22] and (BEDO-TTF) 3 [Fe(CN) 5 NO] 0.75 . [23] Both salts are metallic down to low temperatures and the first undergoes a superconducting transition at 1.06 K. As shown in salts are different: there are three different donors along the step chains in the first salt, but a triangle of donors in the second. The average charge of the donor in the two salts is different: +1/3 for (BEDO-TTF) 3 Cu 2 (NCS) 3 and +1/2 for (BEDO-TTF) 3 [Fe(CN) 5 NO] 0.75 .…”

Molecular Metals Based on BEDT‐TTF Radical Cation Salts with Magnetic Metal Oxalates as Counterions: β″‐(BEDT‐TTF)4A[M(C2O4)3]·DMF (A = NH4+, K+; M = CrIII, FeIII)

“…Because of the stoichiometry of the salt, the four bands in Figure 7a Figure 7b results from the hybridization of a series of superposing ellipses. [33,40,44] In the present case, the non hybridized ellipses have an area equivalent to that of the Brillouin zone, and their long axis runs approximately along the C ® M¢ direction. These ellipses would superpose if all the interactions along a given type of chain (slipped-chains, step-chains, and p-chains) were identical.…”