作者:Ralf Haiges、Juri Skotnitzki、Zongtang Fang、David A. Dixon、Karl O. Christe
DOI:10.1002/anie.201505418
日期:2015.12.14
isolation of the corresponding adducts [MoO(N3)3⋅2 CH3CN] and [WO(N3)4⋅CH3CN]. Subsequent reactions of [MoO(N3)3] with 2,2′‐bipyridine and [PPh4][N3] resulted in the formation and isolation of [(bipy)MoO(N3)3] and [PPh4]2[MoO(N3)5], respectively. Most molybdenum(V) and tungsten(VI) oxoazides were fully characterized by their vibrational spectra, impact, friction and thermal sensitivity data and, in the case
from cycloheptatriene molybdenumtricarbonyl. A total of 19 crystal structures were determined, including unprecedented structural characterization of molybdenum(0) coordination by dimethyl sulfoxide (DMSO), methanol, ethyl acetate (EtOAc), acetone, and N,N-dimethylformamide (DMF). Correlation of 13C NMR shifts with the complex geometry suggests a direct ligand–ligand interaction between DAD and O-bonded
[Mo(DAD)(CO)3 L]类型的各种络合物(L = CO,MeCN,MeOH,THF,DMSO,DMF,Me 2 CO,EtOAc,THT,Im H,Im 1,t BuNC,n Bu 3 P),(ER 4)[Mo(DAD)(CO)3 X](ER 4 = NEt 4 + ; X – = Cl –,Br –,I –,NCS –,CN –和ER 4 + = PPh 4 + ; X – = N 3 –)和(ER 4)[Mo(DAD)(CO)3 } 2(μ-X)](ER 4 + = NEt 4 + ; X – = CN –,OAc –和ER 4 + = PPh 4 + ; X – = N 3 -; DAD =N,通过环庚三烯三羰基钼配位体交换制备N′-双(2,6-二甲基苯基)丁烷-2,3-二亚胺)。总共确定了19个晶体结构,包括前所未有的钼(0)配位结构的二甲基亚砜(DMSO),甲醇,乙酸乙
Binary Polyazides of Cadmium and Mercury
作者:Axel Schulz、Alexander Villinger
DOI:10.1002/chem.201406023
日期:2015.2.23
Following our interest in binary element–nitrogen compounds we report here on the synthesis and comprehensive characterization (M.p., IR/Raman, elemental analysis, 14N/133Cd/199Hg NMR) of tri‐ and tetraazido cadmate and mercurate anions [E(N3)(2+n)]n− (E=Cd, Hg; n=1, 2) in a series of [Ph4P]+ and [PNP]+ ([PNP]+=bis(triphenylphosphine)iminium) salts. The azide/chloride exchange in CH2Cl2 as well as
Unprecedented Conformational Variability in Main Group Inorganic Chemistry: the Tetraazidoarsenite and -Antimonite Salts A<sup>+</sup>[M(N<sub>3</sub>)<sub>4</sub>]<sup>−</sup> (A = NMe<sub>4</sub>, PPh<sub>4</sub>, (Ph<sub>3</sub>P)<sub>2</sub>N; M = As, Sb), Five Similar Salts, Five Different Anion Structures
作者:Ralf Haiges、Martin Rahm、Karl O. Christe
DOI:10.1021/ic3021996
日期:2013.1.7
whereas for [Sb(N3)4]− associated anions are energetically favored in the solid state and possibly in solutions. Raman spectroscopy shows that in the azide antisymmetric stretching region, the solid-state spectra are distinct for the different conformers, and permits their identification. The spectra of solutions are solvent dependent and differ from those of the solids indicating the presence of rapidly
[Ph4P]2[Be(N3)4] (1) and [PNP]2[Be(N3)4] (2; PNP=Ph3PNPPh3) were synthesized by reacting Be(N3)2 with [Ph4P]N3 and [PNP]N3. Compound 1 represents the first structurally characterized homoleptic beryllium azide. The electronic structure and bonding situation in the tetraazidoberyllate dianion [Be(N3)4]2− were investigated by quantum‐chemical calculations (NPA, ELF, LOL).