[ECd8(E'Ph)16]2- cluster chemistry (E, E' = sulfur, selenium, tellurium)

Abstract

Supplementary Material Available: Atomic positional and thermal parameters, bond lengths, bond angles, and torsional angles for (Et4N),.lb.(DMF) (1 5 pages). Ordering information is given on any current masthead page. nonmolecular crystal structure of J ~[ I S C~~( S B U~)~~) ( C N )~,~] .~~ (IO) Dance, 1. G.; Garbutt, R. G.; Ma, I.; Scudder, M. L., to be published. Bis[phenyl[ (perfluoroalkanesulfonyl)oxy]iodo]acetylene, PhI+C=SI+Ph.2R&03-, and 1,4-BiNpheny I[ ( perfluoroalkanesulfon yl)ox y ]iodo]-1,3butadiyne, PhI+C=C-C=CI+Ph.2R&03-

Studies on the Formation of CdS Nanoparticles from Solutions of (NMe4)4[Cd10S4(SPh)16]

“…The Cd i and Cd o resonances of 4 were at 625 and 584 ppm, respectively. [14] These values are distinctly upfield shifted compared to the Cd i and Cd o resonances of 1 (682.5 and 598 ppm). The shifts are different to those obtained for the B2 sample (593, 517 and 67 ppm), which suggests that 4 is not present in DMSO reaction solutions after the thermal treatment.…”

“…Cluster 4 was characterized previously in DMF solution by 113 Cd NMR spectroscopy. [14] The integrity of the complex in solution was confirmed. The Cd i and Cd o resonances of 4 were at 625 and 584 ppm, respectively.…”

“…), we obtained crystals of the known compound [Cd 4 (SPh) 8 ] ϱ (3) [32] and of (NMe 4 ) 2 [Cd 8 S(SPh) 16 ] (4). A single-crystal X-ray structure determination showed that the cluster anion of 4 has essentially the same structure as that in (MV)[Cd 8 S(SPh) 16 ] [34] (MV = methyl viologen dication), (NEt 4 ) 2 [Cd 8 S(SePh) 16 ] [14] and [Cd 8 S(SePh) 12 Cl 4 ] 2-. [35] In order to examine whether 3 and 4 were present in the reaction solutions directly after the heat treatment, we compared the NMR spectra of 3 and 4 with those of reaction solutions.…”

Synthesis, Structures, and Properties of a Series of [Cd8Se(SePh)12Cl4]2− Cluster Compounds with Different Counterions

“…The molecular structure of the cluster anion [Cd 8 Se(SePh) 12 Cl 4 ] 2Ϫ is similar for all the compounds studied ( Figure 1). [8,9] A central selenium atom Se1 is tetrahedrally surrounded by four ''in- ner'' cadmium atoms Cd1 to Cd4. Each of these four inner cadmium atoms is bound, through three µ 2 -SePh Ϫ ligands (Se2 to Se13), to one of the four ''outer'' cadmium atoms Cd5 to Cd8, which also form a tetrahedron.…”

Synthesis, multinuclear magnetic resonance spectra, and chemistry of some complexes [(μ-SR)6(MX)4]2− (R = alkyl; M = Zn or Cd; X = Cl, Br, or I) and the X-ray structural analysis of (Et4N)2[(μ-SPri)6(CdBr)4]

“…3(b) is not very sensitive to the nature of the terminal halide: 6,, = -613.6, -610.6, and -607.4 forX = C1, Br, and I, respectively. This signal is in the region expected for se'-in various forms, e.g., 6,, = - 5 1 1 ically different A and B sites can be expected to couple = S, Se, Te; X = halide or EPh-) was prepared by the selfassembly method and shown to have this structure also (36). through two bonds.…”