期刊
DALTON TRANSACTIONS
卷 49, 期 19, 页码 6384-6390出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0dt01341b
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资金
- National Natural Science Foundation of China [21703084, 21603280, 21720102007, 21703092]
- Shandong Provincial Natural Science Foundation [ZR2017BB011]
- Doctoral Fund of Linyi University [BL2017031]
Charge transfer at P atoms in an N-heterocyclic carbene stabilized 6x-electron aromatic dicarbondiphosphide 1 has been observed upon interaction with a variety of small molecule substrates that feature a polar E-H bond (E = C, N, and O). As a result, these P atoms exhibit fleeting nucleophilicity and electrophilicity behaving as potential independent active sites, which effect the spontaneous addition of E-H bonds leading to a series of unsymmetrical 1,3-diphosphetane frameworks bearing P-C (2), P-N (6 and 7), and P-O bonds (8b, 8c, and 9). In addition, 1,3-diphosphetanium salts have been achieved when X-type substituents are weakly coordinating (i.e. [(CN)(2)CH](-) (3), I- (4), and I(PhOH)(2)PhO](-) (10)). The mechanisms of such transformations are investigated using density functional theory calculations.
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