Reactivity of (Triphos)FeBr 2 (CO) towards sodium borohydrides.

Autor:	Mukhopadhyay, Tufan K., Groy, Thomas L., Smythe, Nathan C., Gordon, John C., Trovitch, Ryan J.
Předmět:	REACTIVITY (Chemistry) IRON compounds SODIUM compounds BOROHYDRIDE CARBON monoxide BROMIDES COORDINATION compounds SINGLE crystals
Zdroj:	Journal of Coordination Chemistry; Jun/Jul2016, Vol. 69 Issue 11-13, p2038-2046, 9p, 4 Diagrams, 1 Chart
Abstrakt:	The addition of CO to (Triphos)FeBr2(Triphos = PhP(CH2CH2PPh2)2) resulted in formation of six-coordinate (Triphos)FeBr2(CO). This coordination compound was found to havecis-bromide ligands and amer-Triphos ligand by single crystal X-ray diffraction. Once characterized, the reactivity of this compound toward NaEt3BH and NaBH4was investigated. Adding 1 eq. of NaEt3BH to (Triphos)FeBr2(CO) resulted in formation of (Triphos)FeH(Br)(CO), while the addition of 2.2 eq. afforded previously described (Triphos)Fe(CO)2. In contrast, adding 2.2 eq. of NaBH4to (Triphos)FeBr2(CO) resulted in carbonyl dissociation and formation of diamagnetic (Triphos)FeH(η2-BH4), which has been structurally characterized. Notably, efforts to prepare (Triphos)FeH(η2-BH4) following 2.2 eq. NaBH4addition to (Triphos)FeBr2were unsuccessful. The importance of these observations as they relate to previously reported (Triphos)Fe reactivity and recent developments in Fe catalysis are discussed. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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