Preparation and crystal structures of [PPh4]2[M2(SPh)6](M = Zn or Cd)

Sulfur K-edge extended X-ray absorption fine structure spectroscopy of homoleptic thiolato complexes with Zn(II) and Cd(II)

“…The SÁ Á ÁS interactions of 2 include two types: the shorter and longer S b Á Á ÁS t and S t Á Á ÁS t ranging from 3.9507(6) to 4.3955(6) Å in the crystal structure of 3. The average SÁ Á ÁS interaction of [{Cd(SPh) 2 } 2 (l-SPh) 2 ] 2À is 4.130(9) Å [51]. The SÁ Á ÁS interactions of 4, having a Cd 4 S 6 adamantane-like cage, span a wide range 3.992 and 4.263 Å .…”

“…For the analogous complexes [{Zn(SR) 2 } 2 (l-SR) 2 ] 2À (SR = SPh and SEt), the average SÁ Á ÁS interaction is 3.835(9) Å for SR = SPh and 3.848(8) Å for SR = SEt[51,52]. Similarly to 2, S b Á Á ÁS b distance was at 3.891(1) Å Sulfur K-edge EXAFS Fourier transform of 2; experimental (solid line) and the fit (dash line) data.…”

SYNTHESIS AND STRUCTURE OF cis-syn-[Cd(μ-SEt)(S2CSEt)(P{c-C6H11}3)]2

“…The terminal Cd-S distance, Cd(1)-S(l), is expectedly shorter than the distances reported for the six-coordinate complexes Cd(S 2 CSC 4 H 9 -«) 2 'bpy [3], 2.664(1) and 2.704(1) A, and Cd(S 2 CSCy) 3 [4], 2.667(2)-2.722(2) A, consistent with both the lower coordination number of Cd and the monodentate nature of the EtSCS 2~ in 1. The substituents on the bridging S atoms in I have the syn arrangement about the Cd 2 S 2 ring, compared with the anti arrangement found for all other dimers with the Cd(SR) 2 Cd bridging unit [4][5][6][7][8][9][10][11].…”

Zinc co‐ordination in the DNA‐binding domain of the yeast transcriptional activator PPR1

“…We propose that the two zinc ions are each co-ordinated by four sulphurs, two from terminal and two from bridging cysteines, in an arrangement (see Fig. 4) which corresponds to that identified for the [Zn2(SR)6] 2-(R = Et [22] or Ph [20,23]) anions. The [20,22,23].…”

“…4) which corresponds to that identified for the [Zn2(SR)6] 2-(R = Et [22] or Ph [20,23]) anions. The [20,22,23]. These results clearly suggest that each monomer of the Zn(II) form of PPR 1 contains a bimettalic cluster, in which each zinc ion is tetrahedrally co-ordinated by four cysteine residues, two of which act as bridging ligands between the two neighbouring zinc atoms (see Fig.…”