Synthesis and bonding model of chelate stabilized [Ph2P (CH2) PPh2CF2]2+ (n=2, 3) dications

被引：2

作者：

Zhao, Lili ^{[1
,2
]}

Petz, Wolfgang ^{[1
]}

Frenking, Gernot ^{[1
]}

Kuzu, Istemi ^{[1
]}

Neumueller, Bernhard ^{[1
]}

机构：

[1] Philipps Univ, Fachbereich Chem, Hans Meerwein Str 4, D-35032 Marburg, Germany

[2] Nanjing Tech Univ, Inst Adv Synth, Nanjing 211816, Jiangsu, Peoples R China

来源：

JOURNAL OF FLUORINE CHEMISTRY | 2017年 / 196卷

关键词：

Fluorinated carbones; Crystal structures; Multi nuclear NMR spectra; Quantum chemical calculations; Bonding analysis; DIVALENT CARBON(0) CHEMISTRY; BASIS-SETS; COMPLEXES; CARBODIPHOSPHORANES; APPROXIMATION; BORON; ACTIVATION; CATALYSTS; LIGANDS; ENERGY;

D O I：

10.1016/j.jfluchem.2016.09.008

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The difluorine dications [Ph2P(CH2)(n)PPh2CF2](2+)(Br-)(2) with n=2, 3 have been synthesized by reacting Br2CF2 with the chelating ligands Ph2P(CH2)(n)PPh2 (dppe, n=2; dppp, n=3). The dications [Ph2P(CH2)(n),Ph2CF2](2+) were structurally characterized by x-ray analysis and NMR spectroscopy. The doubly charged species are formally derived from the cyclic carbones [Ph2P(CH2)(n)PPh2C] where two r ions are attached to the divalent C(0) atom. The transient mono addition cations [Ph2P(CH2)(n)PPh2CF2Br](+) were observed but could not be isolated. The bonding analyses of [Ph2P(CH2)(n)PPh2CF2](2+) and [Ph2P(CH2)(n),Ph2CF2](+) suggest that the P-C-P bonds should be considered as classical electron-sharing bonds. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：72 / 80

页数：9

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