Novel Coordination in the First Tellurium Porphyrin Complex: Synthesis and Crystal Structure of [Te(ttp)Cl2]

Chemistry inside a Porphyrin Skeleton: Platinacyclopentadiene from Tellurophene

“…The deformation of platinaporphyrin skeleton leads to a close proximity of the nitrogen N22 and tellurium atom (2.409–2.460 Å (DFT, Table S3); 2.407(8) Å for 5‐MeI (X‐ray)), slightly longer than a typical Te−N(sp 2 ) bond length (1.989–2.365 Å), [28] however much shorter than the sum of van der Waals radii (3.61 Å), [30] and shorter than a “long Te−N interaction” (2.598(3) Å) in the tellurium tetraphenylporphyrin complex [31] . Thus, although Lewis structures of 5 or 5‐XY do not require drawing of such a bond, the distance indicates the presence of significant interatomic interactions.…”

Reactions of β-diketiminates with selenium and tellurium halides

“…An example of such coordination is observed in [Te(ttp)Cl 2 ] (TTP = tetra-p-tolyl porphyrin) [10]. The short bond lengths, 1.394 (6) and 1.387(6) Å (Fig.…”

7 Oxygen, sulfur, selenium and tellurium

“…This can be explained by the VSEPR approach for an AX 5 E species, in which the Te() atom features a stereochemically active lone pair of electrons. 26 A new polythiophosphate anion, [P 2 S 10 ] 4Ϫ , has been isolated as the tetracaesium salt from the fusion of Pb, P 2 S 5 , Cs 2 S and S at 500 ЊC for two days. The anion comprises two PS 4 tetrahedra bridged by a disulfide, thereby forming a S 4 2Ϫ fragment in the anion.…”