in neat (no solvent) byproducts: H2O; at elevated temp.;;

in hydrogenchloride dissolving oxide in aq. HCl, pptn. with excess aq. NH4F, filtration, drying, dehydration on heating ppt. with excess powdered NH4F to 360°C in a dry stream of He or Ne (O2-free) for 5h;;

in neat (no solvent) at room temp. in presence of moisture;;

in neat (no solvent) byproducts: carbon; violent react.;;

sodium linoleate; linoleic acid in ethanol; water High Pressure; Na linoleate, linoleic acid and EtOH mixed under agitation; aq. soln. ofYb(NO3)3 and NaF added; agitated for ca. 5 min; transefrred to autoclav e; sealed; hydrothermally treated at 100-200°C for 8-10 h; cooledto room temp.; deposit dispersed in cyclohexane; EtOH added; centrifuged; powder purified with EtOH several times; detd. by X-ray powder diffraction and electron microscopy; YbF3 and NaYb2F7 nanocrystals obtained;

in neat (no solvent) byproducts: COF2, SO2; thermal decompn. in inert atmosphere (exclusion of moisture);;

in toluene under N2, ambient temp., 1 h; filtered, washed with toluene, dried in vacuo; elem. anal.;

in benzene-d6 under N2;

oleic acid; 1-octadecene; oleylamine in neat (no solvent) (Ar); addn. of K compd. and Yb compd. to mixture of oleic acid, 1-octadecene, oleylamine at room temp., heating to 120°C under vacuum for30 min, heating to 250-330°C (22 K/min), storage at this temp. f or 15-120 min;

sodium dodecyl sulfate; oleic acid in ethanol; water High Pressure; aq. soln. of NaOH, NH4HF2 and alcoholic soln. of oleic acid stirred withaq. soln. of Me(CH2)11OSO3Na for 30 min; 0.1 M aq. soln. (Gd0.794Yb0.2H o0.001Tm0.005)(NO3)3 added at 30°C; mixt. heated in Teflon-lined autoclave at 180°C for 24 h; cooled to room temp.; after 12 h product collected, washed (several times EtOH, H2O); dried (80°C, vac.); heated at 600°C for 30 min in N2 stream; XRD;