Mononuclear mixed oxosulfidomolybdate(VI) complexes with aminodicarboxylic ligands. Synthesis and spectroscopic characterization by multinulcear magnetic resonance spectroscopy
摘要:
Addition of B2S3 to a methanolic solution of the MoVIO3L2- complex (L = NN-bis(ethanoic acid)-1-amino-2-methylthio-ethane) results in the formation of two different monomeric oxosulfidomolybdate(VI) complexes, [MoO2SL]2- and [MoOS2L]2- as indicated by H-1, C-13, O-17 and Mo-95 NMR spectroscopy and by the reaction of these two sulfurated species with triphenylphosphine. The temperature dependences of the H-1 NMR spectra indicate exchange processes for both sulfido complexes. Their redox properties are discussed and contrasted with those observed for the parent fac-trioxo molybdenum(VI) complex. The primary synthetic route to mixed oxo-sulfido [MoO3-nSnL]2- complexes described here can be extended to other aminodicarboxylic ligands like iminodiacetic acid.
According to an aspect of the present invention, a dental alginate impression material includes an alginate, calcium sulfate, and an aminocarboxylic acid compound.
根据本发明的一个方面,牙科藻酸盐印模材料包括藻酸盐、硫酸钙和氨基羧酸化合物。
Dental alginate impression material
申请人:GC Corporation
公开号:US10744071B2
公开(公告)日:2020-08-18
According to an aspect of the present invention, a dental alginate impression material includes an alginate, calcium sulfate, and an aminocarboxylic acid compound.
根据本发明的一个方面,牙科藻酸盐印模材料包括藻酸盐、硫酸钙和氨基羧酸化合物。
Placing a scale inhibitor within a brine-containing subterranean formation
申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.
公开号:EP0618346B1
公开(公告)日:1997-07-23
EXTERNAL GRADIENT CHROMATOFOCUSING
申请人:Cryobiophysica, Inc.
公开号:EP1628729A2
公开(公告)日:2006-03-01
COMPOSITIONS FOR REDUCING, AMELIORATING, TREATING, OR PREVENTING CONDITION OF DRY EYE AND METHODS OF MAKING AND USING SAME