Bernt Krebs

TL;DR: Tris(methylseleno)stibane (1) has been prepared by reaction of Sb with Me2Se2. The crystal structure of 1 consists of (MeSe)3Sb molecules with trigonal pyramidal SbSe3 units (average distances Sb-Se 2.580 Å and Se-C 1.97 A, angles SeSbSe 83-102°) as mentioned in this paper.

TL;DR: In this paper, a functionalized 1-diethylamino-1-fluoro-2-phosphaalkenes of the type R3E-P=C(F)NEt2 [R/E = Me/Si (2), Me/Ge (3), CF3/Ge, Me/Sn (5)] are bestatigt.

Abstract: Synthesis and Characterization of Novel Five- and Six-coordinate Manganese Complexes as Catechol Dioxygenase Models The five- and six-coordinate manganese complexes [Mn(tphhp)Cl2] {tphhp = N,N′-bis(2-pyridylmethyl)-2-(2-pyridyl)hexahydropyrimidine} (1), [Mn(bpma)Cl](ClO4) {bpma = bis((2-pyridylmethyl)((1-methylbenzimidazol-2-yl)-methyl)amine} (2) and [Mn(L)TCC] {HL = (1-hydroxy-4-nitrobenzyl)((1-methylimidazol-2-yl)methyl)(2-pyridylmethyl)amine} (3) were synthesized and characterized by various techniques such as single crystal X-ray structure analysis, mass spectrometry, IR and UV/vis spectroscopy, cyclic voltammetry, and elemental analysis. 1 and 2 crystallize in the monoclinic space group P21/n (No. 14) (1) and P21/c (No. 14) (2). The ligand and the chlorine ions provide the N3Cl2-donorset in 1 and the N3Cl2-donorset in 2, respectively. Compounds 1 and 2 show catalytic activity regarding the oxidation of 3,5-di-tertbutylcatechol to 3,5-di-tert-butylchinon. To our knowledge, 1 and 2 are the first five-coordinate manganese complexes that show catecholase activity. 3 crystallize in the orthorhombic space group P212121 (No. 19) and the ligand and tetrachlorocatechol (TCC) build the N3O3-donorset in 3.