Abstract
Two novel metallacarborane-based stationary phases for high performance liquid chromatography were synthesized and characterized utilizing linear solvation energy relationships concept. Interactions taking place between selected probes (45 analytes) and the stationary phases and the mobile phases consisting of a mixture of acetonitrile with buffer were described by the linear solvation energy relationship model in a broad range of acetonitrile/buffer ratios. The interaction properties of the metallacarborane phases were compared with plain silica, the starting material for the preparation of the metallacarborane phases, and with a typical silica-based reversed-phase sorbent. It was clearly demonstrated that the metallacarborane sorbents provide qualitatively and quantitatively different interactions with respect to both the plain silica and reversed-phase stationary phase. It was shown that these novel phases might have also a separation potential in the area of hydrophilic interaction liquid chromatography.
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