用PhICl 2对亚砜膦i Pr t Bu 2 PSe进行氯化反应,得到化合物i Pr t Bu 2 PSe 2 Cl 2,该化合物含有P-Se-SeCl 2部分,正式为二氯化硒的膦硒化物配合物。通过X射线结构分析确定了该产品的两种多晶型物。与t Bu 3 PSe的类似反应产生了一种油,大概是t Bu 3 PSe 2 Cl 2,从其中可以得到少量的t Bu 3。获得了PSe 3 Cl 2并通过X射线结构分析对其进行了表征。
The First Phosphine-Catalyzed Insertion of Tellurium into Sn−Sn and Pb−Pb Bonds: A Simple and Efficient Route to R<sub>3</sub>MTeMR<sub>3</sub> (M = Sn, Pb)
作者:Li-Biao Han、Farzad Mirzaei、Masato Tanaka
DOI:10.1021/om990728s
日期:2000.3.6
elemental tellurium efficiently inserts into Sn−Sn and Pb−Pb bonds under mild conditions to give the corresponding tellurides R3MTeMR3 (M = Sn, Pb) in quantitative yield. Mechanistic study shows that first a phosphine telluride R‘3PTe is formed via the reaction of R‘3P with tellurium, which subsequently reacts with (R3M)2 to produce (R3M)2Te and concomitantly regenerates R‘3P to restart another cycle
The Bromination of Bulky Trialkylphosphane Selenides R
<sub>2</sub>
R′PSe (R, R′ =
<i>i</i>
Pr or
<i>t</i>
Bu) Studied by Physical and Computational Methods
作者:Cristian G. Hrib、Frank Ruthe、Emma Seppälä、Michael Bätcher、Christian Druckenbrodt、Cathleen Wismach、Peter G. Jones、Wolf‐W. du Mont、Vito Lippolis、Francesco A. Devillanova、Michael Bühl
DOI:10.1002/ejic.200500596
日期:2006.1
containing 1 and 2, exemplified by the “NMR-titration” of 1c with molecular bromine, averaged 31P NMR singlets and their 77Se satellites indicate rapid intermolecular bromine exchange reactions (kinetic lability of the Se–Br bonds). Calculations modelling such bromine transfer support nucleophilic attack of R3PSe (Se Br) on an electrophilic Br atom of R3PSeBr2. Among the phosphane selenides 1a–d, tBu(iPr)2PSe
Soft–Soft Interactions Involving Iodoselenophosphonium Cations: Supramolecular Structures of Iodine Adducts of Bulky Trialkylphosphane Selenides
作者:Wolf‐W. du Mont、Michael Bätcher、Constantin Daniliuc、Francesco A. Devillanova、Christian Druckenbrodt、Jörg Jeske、Peter G. Jones、Vito Lippolis、Frank Ruthe、Emma Seppälä
DOI:10.1002/ejic.200800513
日期:2008.10
The reactions of trialkylphosphaneselenides tBu n iPr 3-n PSe (n = 3: la; n = 2: 1b; n = 1: 1c; n = 0: 1d) with iodine are studied with the help of heteronuclear NMR spectroscopy, vibrational spectroscopy, and X-ray crystal structure determinations. The reaction of la with one equivalent of iodine provides, after crystallization from dichloromethane/pentane, solid 2a, which consists of pairs of molecular
三烷基膦硒化物 tBu n iPr 3-n PSe (n = 3: la; n = 2: 1b; n = 1: 1c; n = 0: 1d) 与碘的反应借助异核 NMR 光谱、振动光谱和 X 射线晶体结构测定。在从二氯甲烷/戊烷结晶后,la 与一当量碘的反应提供固体 2a,其由成对的分子加合物 tBu 3 PSe-II 以及交替的链 [(tBu 3 PSe) 2 I] + 和I 3 - 离子。将碘以 1:1 的摩尔比添加到 1b、1c 和 1d 中,提供具有配方 [(tBu n -iPr 3-n PSe) 2 I] + [I 3 ] - (n = 2: 2b) 的离子固体; n = 1: 2c; n = 0: 2d)。化合物2a-2d表现出基于各种弱Se…I和Se…Se相互作用的超分子结构。在 2a 中,不带电的分子通过Se…Se接触形成二聚体,而阴离子和阳离子通过线性P-Se…I阴离子接触组装成链。离子化合物
Zwitterionic Phosphoranides as Intermediates in the Reaction of Phosphorus Tribromide with<i>N</i>,<i>N</i>-Dimethyl-<i>N</i>′-arylformamidines
作者:Anatoliy P. Marchenko、Georgyi N. Koidan、Anastasia N. Hurieva、Alexander B. Rozhenko、Aleksandr N. Kostyuk
DOI:10.1002/hc.21283
日期:2016.1
zwitterionic phosphoranides 2a,b were found to be intermediate products in the reaction of N,N-dimethyl-N′-(aryl)formamidines with PBr3. The structure of phosphoranide 2a was determined by means of the X-ray and quantum chemistry investigations. Mechanism of its formation was proposed based on Density functional theory (DFT) calculations. Reactions of 2 with amines and selenium yielded either C-phosphorylated
Tris(<i>tert</i>-butyl)phosphine selenide, the missing link in tris(<i>tert</i>-butyl)phosphine chalcogenide structures<sup><i>t</i></sup>Bu<sub>3</sub>P=<i>X</i>(<i>X</i>= O, S, Se, Te)
In tris(tert-butyl)phosphine selenide, C(12)H(27)PSe, all the methyl ligands are disordered over two sites in the ratio 70/30. The molecule displays crystallographic C(3) symmetry. The bond angles at the P atom are distorted tetrahedral [C--P--C 110.02 (5) degrees and Se==P--C 108.91 (5) degrees ]. The P--C and P==Se bond lengths are 1.908 (1) and 2.1326 (6) A, respectively. A comparison of the structural