Abstract
The paddlewheel complex Cr2(DpyF)4 (1), where DpyF = N,N′-di(2-pyridyl)formamidinate, has a short Cr-Cr distance of 1.938(2) Ä for the Cr≡Cr quadruple bond. In solution, there is a series of interconverting isomers, as determined by variable temperature 1H NMR studies. Compound 1 can be readily oxidized by CuCl2 to produce [Cr2(DpyF)4][CuCl2]2 (2) and [Cr2(DpyF)4CuCl3][CuCl2] (3). In both cases, the metal-metal quadruple bond is cleaved in favor of six-coordinate Cr(III) ions. Magnetic measurements for the oxidized products show that the chromium ions in the dichromium units exhibit strong antiferromagnetic interactions.
Original language | English |
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Pages (from-to) | 3022-3027 |
Number of pages | 6 |
Journal | Dalton Transactions |
Issue number | 15 |
DOIs | |
State | Published - Aug 7 2003 |
Externally published | Yes |