Carbidoheptarhenate Complexes of Mercury Hydroxide and Arenethiolate. Crystal Structures of [NEt₃Bz]₂[Re₇C(CO)₂₁HgOH] and [PPh₄]₂[Re₇C(CO)₂₁HgSC₆H₄Br]

Carbidoheptarhenate Cluster Complexes of Mercury with Hydrosulfide or Functionalized Thiolate Ligands

“…The mercury−rhenium distances to the face described by Re1, Re2, and Re3 are 2.885(1) (to Re1), 2.861(1) (to Re2), and 2.865(1) Å (to Re3). The average of 2.87 Å is identical to that found for the arenethiolate complex [Re 7 C(CO) 21 HgSC 6 H 4 Br] 2- . The Re−Re distances in the hydrosulfide complex 2 are closely comparable to those found in other carbidoheptarhenate clusters of the type [Re 7 C(CO) 21 ML n ] 2- . , …”

“…The average of 2.87 Å is identical to that found for the arenethiolate complex [Re 7 C(CO) 21 HgSC 6 H 4 Br] 2- . The Re−Re distances in the hydrosulfide complex 2 are closely comparable to those found in other carbidoheptarhenate clusters of the type [Re 7 C(CO) 21 ML n ] 2- . , …”

“…To our knowledge [PPh 4 ] 2 [Re 7 C(CO) 21 HgSH] represents the first isolated and structurally characterized mercury complex with a terminal hydrogensulfide ligand. The Hg−S distance of 2.370(6) Å is comparable to the distance found in many mercury thiolate complexes, such as [PPh 4 ] 2 [Re 7 C(CO) 21 HgSC 6 H 4 Br], [Hg(C 5 H 4 NS)(CH 3 CO 2 )] n , [Hg(S(CH 2 ) 3 N(CH 3 ) 3 )][PF 6 ] 2 , [Hg(SC 6 H 2 -2,4,6-i-Pr 3 ) 2 ], and [MeHgSC 6 H 2 -2,4,6-i-Pr 3 ) 2 ] . The mercury−rhenium distances to the face described by Re1, Re2, and Re3 are 2.885(1) (to Re1), 2.861(1) (to Re2), and 2.865(1) Å (to Re3).…”

“…The solid-state structure of complex 2 showed the expected cluster framework of a 1,4 bicapped octahedron (see Figure ), where the mercury is on the face opposite that of the capping Re(CO) 3 unit (Re7) . To our knowledge [PPh 4 ] 2 [Re 7 C(CO) 21 HgSH] represents the first isolated and structurally characterized mercury complex with a terminal hydrogensulfide ligand.…”

“…In previous papers we have described the synthesis and properties of mercury derivatives of the carbidoheptarhenate cluster, namely, [Re 7 C(CO) 21 HgL] 2- , including formation of the hydroxo mercury compound [Re 7 C(CO) 21 HgOH] 2- and its facile transformation to an arylthiolato complex [Re 7 C(CO) 21 HgSAr] 2- . In this paper we report on an expanded range of sulfur derivatives of this cluster-supported mercury center, including the hydrosulfide derivative as well as a set of thiolate derivatives in which the sulfur ligand bears an additional functional group (see Scheme ).…”