Sterically bulky tris(triazolyl)borate ligands as water-soluble analogues of tris(pyrazolyl)borate |
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Authors: | Jernigan Finith E Sieracki Nathan A Taylor Michael T Jenkins Aaron S Engel Sharon E Rowe Brittany W Jové Fernando A Yap Glenn P A Papish Elizabeth T Ferrence Gregory M |
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Institution: | Department of Chemistry, Salisbury University, Salisbury, Maryland 21801, USA. |
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Abstract: | The recently synthesized 3-tert-butyl-5-methyl-1,2,4-triazole reacted with KBH4 to give the new potassium tris(3-tert-butyl-5-methyl-1,2,4-triazolyl)borate K(Ttz(tBu,Me)) ligand. Ttz(tBu,Me) formed a four-coordinate (Ttz(tBu,Me))CoCl complex and five-coordinate (Ttz(tBu,Me))CoNO3 and (Ttz(tBu,Me))ZnOAc complexes. When these complexes were compared to their Tp(tBu,Me) analogues, it was found that Ttz(tBu,Me) resulted in negligible steric differences. K(Ttz(tBu,Me)) is more water-soluble than K(Tp(tBu,Me)), so bulky tris(triazolyl)borate ligands should lead to functional models for enzyme active sites in an aqueous environment and the creation of water-soluble analogues of Tp catalysts. |
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