germanium and tin compounds undergo [2+2] cycloaddition with diphenylketene, reaction of the tin derivative with tris(pentafluorophenyl)borane provided unique "push-pull" phosphastannene (MesTer)(Ar)Sn=P(IDipp) (Ar = C6F4[B(F)(C6F5)2]). Going further, we demonstrated the potential of tetrylene-phosphinidene complexes in catalytic hydroboration of carbonyl compounds.
合成稳定的较重的腈类化合物作为单体四亚甲基亚膦 MesTerEP(IDipp) (E = Ge, Sn; MesTer = 2,6-Mes2C6H3, IDipp = C([N-(2,6-iPr2C6H4)CH]2)通过利用 NHC(N-杂环卡宾,此处为 IDipp)与低价磷中心的配位。通过实验和计算检查了 EP 键的多重键合特性。锗和锡化合物均与二苯基乙烯酮发生 [2+2] 环加成反应,锡衍生物与三(五氟苯基)硼烷的反应提供了独特的“推拉”磷锡烯 (MesTer)(Ar)Sn=P(IDipp) (Ar = C6F4[B(F)(C6F5)2])。 ,我们证明了四联苯-亚膦配合物在羰基化合物催化硼氢化中的潜力。
A modular approach to carbene-stabilized diphosphorus species
作者:Adinarayana Doddi、Dirk Bockfeld、Marc-Kevin Zaretzke、Christian Kleeberg、Thomas Bannenberg、Matthias Tamm
DOI:10.1039/c7dt03436a
日期:——
afforded [(IPr)PP(IMes)] (4). The corresponding radical cation [(IPr)PP(IMes)]˙+ (5˙+) is isolated as [5]PF6 by reaction of 4 with ferrocenium hexafluorophosphate, whereas complexes containing the corresponding dication [(IPr)PP(IMes)]2+ (62+) can be isolated as the gallate and borate salts [6](GaCl4)2 and [6](BArF)2 by chloride abstraction from 3 with GaCl3 or sodium tetrakis[bis(3,5-trifluoromethyl)phenyl]borate
Synthesis and Structures of Rh<sup>I</sup>
and Ir<sup>I</sup>
Complexes Supported by N-Heterocyclic Carbene-Phosphinidene Adducts
作者:Adinarayana Doddi、Dirk Bockfeld、Matthias Tamm
DOI:10.1002/zaac.201800440
日期:2019.1.15
adducts of the type (IDipp)PR [R = Ph (5), SiMe3 (6); IDipp = 1,3‐bis(2,6‐diisopropylphenyl)imidazolin‐2‐ylidene] were used as ligands for the preparation of rhodium(I) and iridium(I) complexes. Treatment of (IDipp)PPh (5) with the dimeric complexes [M(μ‐Cl)(COD)]2 (M = Rh, Ir; COD = 1,5‐cyclcooctadiene) afforded the corresponding metal(I) complexes [M(COD)Cl(IDipp)PPh}] [M = Rh (7) or Ir (8)] in moderate
Isolation of Carbene‐Stabilized Arsenic Monophosphide [AsP] and its Radical Cation [AsP]
<sup>+.</sup>
and Dication [AsP]
<sup>2+</sup>
作者:Adinarayana Doddi、Dirk Bockfeld、Marc‐Kevin Zaretzke、Thomas Bannenberg、Matthias Tamm
DOI:10.1002/chem.201903795
日期:2019.10.11
consecutive shortening of the As−P bond lengths and increasing bond order, in agreement with the presence of an arsenic–phosphorus single bond in 4 and a double bond in 62+. The EPR signal of the cationic radical [5]+. indicates a symmetric spin distribution on the AsP moiety through strong hyperfine coupling with the 75As and 31P nuclei.
N-Heterocyclic Carbene-Phosphinidene and Carbene-Phosphinidenide Transition Metal Complexes
作者:Marius Peters、Adinarayana Doddi、Thomas Bannenberg、Matthias Freytag、Peter G. Jones、Matthias Tamm
DOI:10.1021/acs.inorgchem.7b01798
日期:2017.9.5
calculations reveal a strong polarization of the phosphorus ligands upon metalcomplexation, which can be ascribed to the ability of the imidazole moiety to effectively stabilize a positive charge. Dehydrohalogenation of complexes 9/10 to 11/12 affords a significant increase of the metal-phosphorus bond order, with the carbene-phosphinidenide ligand acting as a strong 2σ,2π-electron donor.