caa a22 4500 469059370 CHVBK 20180323132852.0 cr unu---uuuuu 170328e19920501xx s 000 0 eng 10.1007/BF01076670 doi (NATIONALLICENCE)springer-10.1007/BF01076670 Intercalative reaction of a cobalt(III) cage complex, Co(sep)3+, with magadiite, a layered sodium silicate [Elektronische Daten] [James Dailey, Thomas Pinnavaia] The cationic metal cage complex (1,3,6,8,10,13,16,19-octaazabicyclo[6.6.6]cicosane)cobalt(III), Co(sep)3+ has been investigated as a potential pillaring reagent for Na+-magadiite (Na1.7Si14O27.9(OH)1.9 · 7.6 H2O) a synthetic layered sodium silicate. Reaction of Na+-magadiite with aqueous solutions of Co(sep)Cl3 at 25°C resulted in the binding of Co(sep)3+ cations to the external crystalline surface of the layered silicate. In contrast, an intercalated product exhibiting a 17.6 Å basal spacing was generated by reaction at 100°C.29Si MAS NMR and FT-IR spectroscopy indicate that Co(sep)3+ intercalated reaction products retain the magadiite layer structure. Moreover, scanning electron micrographs of the reaction products showed retention of the original particle morphology, suggesting a topotactic intercalation. However, during intercalation, some of the Co(sep)3+ was found to undergo an unusual demetalation reaction leaving a combination of Co(II) and Co(sep)3+ between the layers. Nitrogen surface area analysis showed that only a small amount of microporous surface existed in the Co(sep)3+ intercalated derivative, suggesting that most of the interlayer space is ‘stuffed' with cobalt species. Kluwer Academic Publishers, 1992 Magadiite nationallicence intercalation nationallicence cobalt sepulchrate nationallicence pillaring reactions nationallicence 29Si MAS NMR nationallicence N2 gas adsorption nationallicence Dailey James Department of Chemistry and Center for Fundamental Materials Research, Michigan State University, 48824, East Lansing, Michigan, USA aut Pinnavaia Thomas Department of Chemistry and Center for Fundamental Materials Research, Michigan State University, 48824, East Lansing, Michigan, USA aut Journal of inclusion phenomena and molecular recognition in chemistry Kluwer Academic Publishers 13/1(1992-05-01), 47-61 0923-0750 13:1<47 1992 13 10847 https://doi.org/10.1007/BF01076670 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01076670 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dailey James Department of Chemistry and Center for Fundamental Materials Research, Michigan State University, 48824, East Lansing, Michigan, USA aut NATIONALLICENCE 700 1- Pinnavaia Thomas Department of Chemistry and Center for Fundamental Materials Research, Michigan State University, 48824, East Lansing, Michigan, USA aut NATIONALLICENCE 773 0- Journal of inclusion phenomena and molecular recognition in chemistry Kluwer Academic Publishers 13/1(1992-05-01), 47-61 0923-0750 13:1<47 1992 13 10847 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer