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Distinctly different reactivity of bis(silylenyl)-versus phosphanyl-silylenyl-substituted o-dicarborane towards O-2, N2O and CO2
Authors: Xiong Yun | Yao Shenglai | Růžička Aleš | Driess Matthias
Year: 2021
Type of publication: článek v odborném periodiku
Name of source: Chemical Communications
Publisher name: Royal Society of Chemistry
Place: Cambridge
Page from-to: 5965-5968
Titles:
Language Name Abstract Keywords
cze Výrazně odlišná reaktivita bis(silylenyl)-versus fosfanyl-silylenyl-substituovaného o-dikarboranu vůči O-2, N2O a CO2 V příkrém rozporu s reaktivitou bis-silylenyldikarboranu CB-Si-2 (1) [CB = ortho-C,C'-C2B10H10, Si = PhC(tBuN)(2)Si] vůči O-2, N2O, a CO2, čímž se získá stejný dioxygenační produkt CB-Si2O2 (2) se čtyřčlenným 1,3,2,4-disiladioxetanovým kruhem, aktivace posledně jmenovaných malých molekul pomocí fosfanyl-silylenyl-funkcionalizovaného CB-SiP (3) {PQP[N(tBu)CH2](2)} poskytuje s O-2 CB-Si(=O)P(=O) silanon-fosfinoxid (4), s N2O poskytuje CB-Si(=O)P silanon-fosfin (5) a s C02 CB-Si(O2C=O)P uhličitan-fosfin křemičitý (6) a CB-C(=O)OSiOP ester (7), v daném pořadí. reaktivita; bissilylenyl-versus fosfanyl-silylenyl-substituovaný; o-dikarboran; O-2; N2O; CO2
eng Distinctly different reactivity of bis(silylenyl)-versus phosphanyl-silylenyl-substituted o-dicarborane towards O-2, N2O and CO2 In stark contrast to the reactivity of the bis-silylenyl dicarborane CB-Si-2 (1) [CB = ortho-C,C'-C2B10H10, Si = PhC(tBuN)(2)Si] towards O-2, N2O, and CO2, yielding the same dioxygenation product CB-Si2O2 (2) with a four-membered 1,3,2,4-disiladioxetane ring, the activation of the latter small molecules with the phosphanyl-silylenyl-functionalised CB-SiP (3) {PQP[N(tBu)CH2](2)} affords with O-2 the CB-Si(=O)P(=O) silanone-phosphine oxide (4), with N2O the CB-Si(=O)P silanone-phosphine (5), and with CO2 the CB-Si(O2C=O)P silicon carbonate-phosphine (6) and CB-C(=O)OSiOP ester (7), respectively. Main-group elements; Activation; Chemistry;

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