Mixed Chloride/Azide Complexes of Arsenic and Antimony

Abstract

The Lewis acid base complexes AsCl(N 3 ) 2 ·pyridine and SbCl 2 N 3 ·2 pyridine were prepared. The products formed were characterised by Raman, IR and NMR spectroscopy. Density functional theory (B3LYP) was applied to calculate structural and vibrational data. Vibrational assignments of the normal modes for the isolated compounds were made on the basis of their vibrational spectra in comparison with com-

Synthesis and Oxidation of a Paddlewheel‐Shaped Rhodium/Antimony Complex Featuring Pyridine‐2‐Thiolate Ligands

“…Thus, the S2−Rh1−Sb1−N2 torsion angle (40°) is noticeably wider than the corresponding dihedral angles of the other three pyS ligands, and the Sb1–N2 distance (involving the N atom of the Rh−S−Rh bridging pyS ligand) is the longest in the range of 2.27 to 2.68 Å. The average Sb–N distance in 1 (2.43 Å) is comparable to those found for Sb III complexes with electronegative substituents and coordinated pyridine (e.g., SbCl 2 N 3 (py) 2 : 2.43 Å; [(py)Sb(1,2‐O 2 C 6 H 4 )O] 2 : 2.49 Å). The Rh−S bonds cis to Sb (avg.…”

Syntheses and structures of triazides of heavy group 15 elements

“…To the best of our knowledge, (Py)2Sb(N3)Cl2 represents the only structurally characterized group 15 element azide complex 55 that is coordinated by two additional Lewis bases. [18] However, this complex consists of isolated molecules as was observed recently for [2-(Me2NCH2)C6H4]Bi(N3)2. [19] In contrast, [2-(Me2NCH2)C6H4]2Bi(N3) [19] forms a dimer in the solid state whereas Me2BiN3 adopts a polymeric N-bridged chain-like 60 structure, in which each Bi atom is fourfold coordinated.…”

Synthesis, Electronic Properties, and Reactivity of Phospholes and 1,1′‐Biphospholes Bearing 2‐ or 3‐Thienyl C‐Substituents

“…Comparable values have been reported 29. 32, 34 Expected absorption bands due to the symmetric N‐N‐N stretching frequency (around 1300 cm −1 ), the N‐N‐N deformation mode (around 640 cm −1 ), and the SbN stretching frequency (around 370 cm −1 ) are overlapped by the absorption bands of the amidinate ligand 37. In contrast, very weak stretching frequencies due to the 2ν s N 3 stretching frequency ( 6 : 2582, 2523; 7 : 2574, 2507 cm −1 ) and the sum of asymmetric and symmetric stretching frequency ν s N 3 +ν as N 3 ( 6 : 3329, 3291; 7 : 3338, 3310 cm −1 ) are observable.…”

“…Moreover, Me 3 SiN 3 can also serve as a solvent in these reactions. Sb III azides have been rarely synthesized29 and to the best of our knowledge, Sb(N 3 ) 3 30 and mixed halide/azide complexes (SbCl(N 3 ) 2 ,31 SbCl 2 N 3 (pyridine) 2 32) and three monoazide complexes L 2 SbN 3 ,33 including Me 2 SbN 3 ,34 represent the only structurally characterized Sb III azides. The same is true for the Bi III azides, although Schulz et al.…”