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Dahmen);  CHEMICAL ABSTRACTS, vol. 116, no. 8, 24/02/1992, Columbus, Ohio, US; abstract no. 74703s, SHIOKAWA, Y. ET AL. "PREPARATION OF LANTHANIDE, THORIUM AND URANIUM OXIDE FILMS BY CHEMICAL VAPOR DEPOSITION USING .BETA.-DIKETONE CHELATES" page 1047;  CHEMICAL ABSTRACTS, vol. 119, no. 22, 29/11/1993, Columbus, Ohio, US; abstract no. 240398e, DRAKE, S.R. ET AL. "LANTHANIDE .BETA.-DIKETONATE GLYME COMPLEXES EXHIBITING UNUSUAL COORDINATION MODES" page 1062;  J. CHEM. SOC., DALTON TRANS., no.15, 1993 pages 2379 - 2386;  J. RADIOANAL. NUCL. CHEM., vol.152, no.2, 1991 pages 373 - 380;  CHEMICAL ABSTRACTS, vol. 101, no. 20, 12/11/1984, Columbus, Ohio, US; abstract no. 180535p, GAVRISHCHUK, E.M. ET AL. "STUDY OF VOLATILE CHELATES OF RARE EARTH ELEMENTS BY ELECTRON-IMPACT MASS SPECTROMETRY" page 686;  CHEMICAL ABSTRACTS, vol. 102, no. 2, 14/01/1985, Columbus, Ohio, US; abstract no. 16524j, TREMBOVETSKII, G.V. "SYNTHESIS AND STUDY OF ADDUCTS OF TRIS(ACETYLACETONATOS) OF RARE EARTH ELEMENTS WITH ACETYLACETONIMINE" page 664;  CHEMICAL ABSTRACTS, vol. 105, no. 22, 01/12/1986, Columbus, Ohio, US; abstract no. 202067z, DZUBENKO, N.G. ET AL. "PROPERTIES AND STRUCTURE OF TRIS(ACETYLACETONATO)RARE EARTH ADDUCTS WITH O-PHENANTHROLINE" page 745;  CHEMICAL ABSTRACTS, vol. 109, no. 20, 14/11/1988, Columbus, Ohio, US; abstract no. 182505t, KUZ'MINA, N.P. ET AL. "ADDITIONAL LIGAND INFLUENCE ON THE SELECTIVITY OF VACUUM SUBLIMATION OF ADDUCTS OF ACETYLACETONATES OF RARE-EARTH ELEMENTS" page 837;  CHEMICAL ABSTRACTS, vol. 113, no. 10, 03/09/1990, Columbus, Ohio, US; abstract no. 90325p, PONCELET, O. ET AL. "SOLUBLE AND VOLATILE YTTRIUM AND COPPER ALKOXO-ACETYLACETONATO DERIVATIVES: SYNTHESIS AND CRYSTAL STRUCTURE OF Y3(.MU.3,.ETA.2-OC2H4OME)2(.MU.2,.ETA.2-OC2H4OME)2(.MU.2,.ETA.1-OC2H4OME)(ACAC)4";  CHEMICAL ABSTRACTS, vol. 119, no. 14, 04/10/1993, Columbus, Ohio, US; abstract no. 151111p, TRIKHA, A.K. ET AL. "STUDIES ON THE 1-METHYLPIPERAZINE ADDUCTS OF LANTHANIDE T RIS-6,6,7,7,8,8,8,8-HEPTAFLUOR-2,2-DIMETHY L-3,5-OCTANEDIONATES" page 851;  CHEMICAL ABSTRACTS, vol. 119, no. 18, 01/11/1993, Columbus, Ohio, US; abstract no. 194408h, DRAKE, S.R. ET AL. "OXYGEN OR NITROGEN CHELATES STABILIZING BARIUM AND YTTRIUM .BETA.-DIKETONATES" page 993;  CHEMICAL ABSTRACTS, vol. 119, no. 24, 13/12/1993, Columbus, Ohio, US; abstract no. 261508f, GLEIZES, A. ET AL. "YTTRIUM TETRAMETHYLHEPTANEDIONATES: SYNTHESES, CRYSTAL AND MOLECULAR STRUCTURES AND THERMAL BEHAVIORS OF TRIS(DIPIVALOYLMETHANATO)YTTRIUM AND ITS MONOHYDRATE" page 881;  CHEMICAL ABSTRACTS, vol. 88, no. 4, 23/01/1978, Columbus, Ohio, US; abstract no. 31390y, MURAV'EVA, I.A. ET AL. "ADDUCTS OF RARE EARTH ELEMENT .BETA.-DIKETONATES AND THEIR STRUCTURE AND PROPERTIES" page 556;  CHEMICAL ABSTRACTS, vol. 93, no. 22, 01/12/1980, Columbus, Ohio, US; abstract no. 214661k, KHAN, B.T. ET A. "COMPLEXES OF RARE EARTHS 2,4-PENTANEDIONATES WITH TRIPHENYLPHOSPHINE OXIDE AND TRIPHENYLARSINE OXIDE" page 695;  CHEMICAL ABSTRACTS, vol. 99, no. 4, 25/07/1983, Columbus, Ohio, US; abstract no. 30325w, GAVRISHCHUK, E.M. ET AL. "MASS-SPECTROMETRIC STUDY OF RARE EARTH ELEMENT DIPIVALOYLMETHANATES AND THEIR ADDUCTS" page 486;  DEPOSITED DOC. 1982 VINITI 3676-83, 249-253;  DEPOSITED DOC. 1983 VINITI 7085-83, PT. 2, 303-306;  INDIAN J. CHEM., SECT. A, vol.19A, no.7, 1980 pages 701 - 702;  INORG. CHEM., vol.29, no.16, 1990 pages 2883 - 2885;  INORG. CHEM., vol.32, no.20, 1993 pages 4464 - 4471;  INORG. CHIM. ACTA, vol.209, no.1, 1993 pages 47 - 53;  INORGANIC CHEMISTRY, vol.21, no.1, 1982 pages 80 - 84 IFTIKHAR, K. ET AL. "MIXED-LIGAND COMPLEXES OF TRIVALENT LANTHANIDE IONS WITH .BETA.-DIKETONES AND HETEROCYCLIC AMINES";  J. FLUORINE CHEM., vol.62, no.2-3, 1993 pages 139 - 143;  METALLOORG. KHIM., vol.1, no.3, 1988 pages 575 - 579;  ZH. NEORG KHIM., vol.31, no.7, 1986 pages 1699 - 1705;  ZH. NEORG. KHIM., vol.22, no.11, 1977 pages 3009 - 3012;  ZH. NEORG. KHIM., vol.28, no.4, 1983 pages 871 - 875;  CHEMICAL ABSTRACTS, vol. 101, no. 20, 12 November 1984, Columbus, Ohio, US; abstract no. 180535p, GAVRISHCHUK, E.M. ET AL. 'STUDY OF VOLATILE CHELATES OF RARE EARTH ELEMENTS BY ELECTRON-IMPACT MASS SPECTROMETRY' page 686 ; cited in the application & DEPOSITED DOC. 1982 VINITI 3676-83, 249-253;  CHEMICAL ABSTRACTS, vol. 102, no. 2, 14 January 1985, Columbus, Ohio, US; abstract no. 16524j, TREMBOVETSKII, G.V. 'SYNTHESIS AND STUDY OF ADDUCTS OF TRIS(ACETYLACETONATOS) OF RARE EARTH ELEMENTS WITH ACETYLACETONIMINE' page 664 ; cited in the application & DEPOSITED DOC. 1983 VINITI 7085-83, PT. 2, 303-306;  CHEMICAL ABSTRACTS, vol. 105, no. 22, 1 December 1986, Columbus, Ohio, US; abstract no. 202067z, DZUBENKO, N.G. ET AL. 'PROPERTIES AND STRUCTURE OF TRIS(ACETYLACETONATO)RARE EARTH ADDUCTS WITH O-PHENANTHROLINE' page 745 ; cited in the application & ZH. NEORG KHIM., vol.31, no.7, 1986 pages 1699 - 1705;  CHEMICAL ABSTRACTS, vol. 109, no. 20, 14 November 1988, Columbus, Ohio, US; abstract no. 182505t, KUZ'MINA, N.P. ET AL. 'ADDITIONAL LIGAND INFLUENCE ON THE SELECTIVITY OF VACUUM SUBLIMATION OF ADDUCTS OF ACETYLACETONATES OF RARE-EARTH ELEMENTS' page 837 ; cited in the application & METALLOORG. KHIM., vol.1, no.3, 1988 pages 575 - 579;  CHEMICAL ABSTRACTS, vol. 113, no. 10, 3 September 1990, Columbus, Ohio, US; abstract no. 90325p, PONCELET, O. ET AL. 'SOLUBLE AND VOLATILE YTTRIUM AND COPPER ALKOXO-ACETYLACETONATO DERIVATIVES: SYNTHESIS AND CRYSTAL STRUCTURE OF Y3(.MU.3,.ETA.2-OC2H4OME)2(.M U.2,.ETA.2-OC2H4OME)2(.MU.2,.ETA.1-OC2H4OM E)(ACAC)4' page 817 ; & INORG. CHEM., vol.29, no.16, 1990 pages 2883 - 2885;  CHEMICAL ABSTRACTS, vol. 116, no. 8, 24 February 1992, Columbus, Ohio, US; abstract no. 74703s, SHIOKAWA, Y. ET AL. 'PREPARATION OF LANTHANIDE, THORIUM AND URANIUM OXIDE FILMS BY CHEMICAL VAPOR DEPOSITION USING .BETA.-DIKETONE CHELATES' page 1047 ; & J. RADIOANAL. NUCL. CHEM., vol.152, no.2, 1991 pages 373 - 380;  CHEMICAL ABSTRACTS, vol. 119, no. 14, 4 October 1993, Columbus, Ohio, US; abstract no. 151111p, TRIKHA, A.K. ET AL. 'STUDIES ON THE 1-METHYLPIPERAZINE ADDUCTS OF LANTHANIDE T RIS-6,6,7,7,8,8,8,8-HEPTAFLUOR-2,2-DIMETHY L-3,5-OCTANEDIONATES' page 851 ; cited in the application & J. FLUORINE CHEM., vol.62, no.2-3, 1993 pages 139 - 143;  CHEMICAL ABSTRACTS, vol. 119, no. 18, 1 November 1993, Columbus, Ohio, US; abstract no. 194408h, DRAKE, S.R. ET AL. 'OXYGEN OR NITROGEN CHELATES STABILIZING BARIUM AND YTTRIUM .BETA.-DIKETONATES' page 993 ; cited in the application & INORG. CHEM., vol.32, no.20, 1993 pages 4464 - 4471;  CHEMICAL ABSTRACTS, vol. 119, no. 22, 29 November 1993, Columbus, Ohio, US; abstract no. 240398e, DRAKE, S.R. ET AL. 'LANTHANIDE .BETA.-DIKETONATE GLYME COMPLEXES EXHIBITING UNUSUAL COORDINATION MODES' page 1062 ; cited in the application & J. CHEM. SOC., DALTON TRANS., no.15, 1993 pages 2379 - 2386;  CHEMICAL ABSTRACTS, vol. 119, no. 24, 13 December 1993, Columbus, Ohio, US; abstract no. 261508f, GLEIZES, A. ET AL. 'YTTRIUM TETRAMETHYLHEPTANEDIONATES: SYNTHESES, CRYSTAL AND MOLECULAR STRUCTURES AND THERMAL BEHAVIORS OF TRIS(DIPIVALOYLMETHANATO)YTTRIUM AND ITS MONOHYDRATE' page 881 ; & INORG. CHIM. ACTA, vol.209, no.1, 1993 pages 47 - 53;  CHEMICAL ABSTRACTS, vol. 88, no. 4, 23 January 1978, Columbus, Ohio, US; abstract no. 31390y, MURAV'EVA, I.A. ET AL. 'ADDUCTS OF RARE EARTH ELEMENT .BETA.-DIKETONATES AND THEIR STRUCTURE AND PROPERTIES' page 556 ; & ZH. NEORG. KHIM., vol.22, no.11, 1977 pages 3009 - 3012;  CHEMICAL ABSTRACTS, vol. 93, no. 22, 1 December 1980, Columbus, Ohio, US; abstract no. 214661k, KHAN, B.T. ET A. 'COMPLEXES OF RARE EARTHS 2,4-PENTANEDIONATES WITH TRIPHENYLPHOSPHINE OXIDE AND TRIPHENYLARSINE OXIDE' page 695 ; & INDIAN J. CHEM., SECT. A, vol.19A, no.7, 1980 pages 701 - 702;  CHEMICAL ABSTRACTS, vol. 99, no. 4, 25 July 1983, Columbus, Ohio, US; abstract no. 30325w, GAVRISHCHUK, E.M. ET AL. 'MASS-SPECTROMETRIC STUDY OF RARE EARTH ELEMENT DIPIVALOYLMETHANATES AND THEIR ADDUCTS' page 486 ; cited in the application & ZH. NEORG. KHIM., vol.28, no.4, 1983 pages 871 - 875;  INORGANIC CHEMISTRY, vol.21, no.1, 1982 pages 80 - 84 IFTIKHAR, K. ET AL. 'MIXED-LIGAND COMPLEXES OF TRIVALENT LANTHANIDE IONS WITH .BETA.-DIKETONES AND HETEROCYCLIC AMINES' cited in the application;  CHEMICAL ABSTRACTS, vol. 99, no. 4, 25 July 1983, Columbus, Ohio, US; abstract no. 30325w, GAVRISHCHUK, E.M. ET AL.: "MASS-SPECTROMETRIC STUDY OF RARE EARTH ELEMENT DIPIVALOYLMETHANATES AND THEIR ADDUCTS" page 486;,relevantClaims[1-5,9],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  CHEMICAL ABSTRACTS, vol. 119, no. 18, 1 November 1993, Columbus, Ohio, US; abstract no. 194408h, DRAKE, S.R. ET AL.: "OXYGEN OR NITROGEN CHELATES STABILIZING BARIUM AND YTTRIUM .BETA.-DIKETONATES" page 993;,relevantClaims[1-5,9],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  IFTIKHAR, K. ET AL.: "MIXED-LIGAND COMPLEXES OF TRIVALENT LANTHANIDE IONS WITH .BETA.-DIKETONES AND HETEROCYCLIC AMINES", INORGANIC CHEMISTRY, vol. 21, no. 1, 1982, pages 80 - 84,relevantClaims[1-5,9],relevantPassages[&lt;table&gt;I&lt;/table&gt;];  CHEMICAL ABSTRACTS, vol. 113, no. 10, 3 September 1990, Columbus, Ohio, US; abstract no. 90325p, PONCELET, O. ET AL.: "SOLUBLE AND VOLATILE YTTRIUM AND COPPER ALKOXO-ACETYLACETONATO DERIVATIVES: SYNTHESIS AND CRYSTAL STRUCTURE OF Y3(.MU.3,.ETA.2-OC2H4OME)2(.MU.2,.ETA.2-OC2H4OME)2(.MU.2,.ETA.1-OC2H4OME)(ACAC)4" page 817;,relevantClaims[1-5],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  CHEMICAL ABSTRACTS, vol. 105, no. 22, 1 December 1986, Columbus, Ohio, US; abstract no. 202067z, DZUBENKO, N.G. ET AL.: "PROPERTIES AND STRUCTURE OF TRIS(ACETYLACETONATO)RARE EARTH ADDUCTS WITH O-PHENANTHROLINE" page 745;,relevantClaims[1-5],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  CHEMICAL ABSTRACTS, vol. 102, no. 2, 14 January 1985, Columbus, Ohio, US; abstract no. 16524j, TREMBOVETSKII, G.V.: "SYNTHESIS AND STUDY OF ADDUCTS OF TRIS(ACETYLACETONATOS) OF RARE EARTH ELEMENTS WITH ACETYLACETONIMINE" page 664;,relevantClaims[1-5],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  CHEMICAL ABSTRACTS, vol. 101, no. 20, 12 November 1984, Columbus, Ohio, US; abstract no. 180535p, GAVRISHCHUK, E.M. ET AL.: "STUDY OF VOLATILE CHELATES OF RARE EARTH ELEMENTS BY ELECTRON-IMPACT MASS SPECTROMETRY" page 686;,relevantClaims[1-5,9],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  CHEMICAL ABSTRACTS, vol. 93, no. 22, 1 December 1980, Columbus, Ohio, US; abstract no. 214661k, KHAN, B.T. ET A.: "COMPLEXES OF RARE EARTHS 2,4-PENTANEDIONATES WITH TRIPHENYLPHOSPHINE OXIDE AND TRIPHENYLARSINE OXIDE" page 695;,relevantClaims[1-3],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  CHEMICAL ABSTRACTS, vol. 109, no. 20, 14 November 1988, Columbus, Ohio, US; abstract no. 182505t, KUZ'MINA, N.P. ET AL.: "ADDITIONAL LIGAND INFLUENCE ON THE SELECTIVITY OF VACUUM SUBLIMATION OF ADDUCTS OF ACETYLACETONATES OF RARE-EARTH ELEMENTS" page 837;,relevantClaims[1-5],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  CHEMICAL ABSTRACTS, vol. 119, no. 24, 13 December 1993, Columbus, Ohio, US; abstract no. 261508f, GLEIZES, A. ET AL.: "YTTRIUM TETRAMETHYLHEPTANEDIONATES: SYNTHESES, CRYSTAL AND MOLECULAR STRUCTURES AND THERMAL BEHAVIORS OF TRIS(DIPIVALOYLMETHANATO)YTTRIUM AND ITS MONOHYDRATE" page 881;,relevantClaims[1-3,5-7],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  CHEMICAL ABSTRACTS, vol. 119, no. 14, 4 October 1993, Columbus, Ohio, US; abstract no. 151111p, TRIKHA, A.K. ET AL.: "STUDIES ON THE 1-METHYLPIPERAZINE ADDUCTS OF LANTHANIDE TRIS-6,6,7,7,8,8,8,8-HEPTAFLUOR-2,2-DIMETHYL-3,5-OCTANEDIONATES" page 851;,relevantClaims[1-5],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  CHEMICAL ABSTRACTS, vol. 88, no. 4, 23 January 1978, Columbus, Ohio, US; abstract no. 31390y, MURAV'EVA, I.A. ET AL.: "ADDUCTS OF RARE EARTH ELEMENT .BETA.-DIKETONATES AND THEIR STRUCTURE AND PROPERTIES" page 556;,relevantClaims[1-5],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  CHEMICAL ABSTRACTS, vol. 116, no. 8, 24 February 1992, Columbus, Ohio, US; abstract no. 74703s, SHIOKAWA, Y. ET AL.: "PREPARATION OF LANTHANIDE, THORIUM AND URANIUM OXIDE FILMS BY CHEMICAL VAPOR DEPOSITION USING .BETA.-DIKETONE CHELATES" page 1047;,relevantClaims[1-5],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  CHEMICAL ABSTRACTS, vol. 119, no. 22, 29 November 1993, Columbus, Ohio, US; abstract no. 240398e, DRAKE, S.R. ET AL.: "LANTHANIDE .BETA.-DIKETONATE GLYME COMPLEXES EXHIBITING UNUSUAL COORDINATION MODES" page 1062;,relevantClaims[1,9],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;]NL9302030-A  CHEMICAL ABSTRACTS, vol. 99, no. 4, 25 July 1983, Columbus, Ohio, US; abstract no. 30325w, GAVRISHCHUK, E.M. ET AL.: "MASS-SPECTROMETRIC STUDY OF RARE EARTH ELEMENT DIPIVALOYLMETHANATES AND THEIR ADDUCTS" page 486;,relevantClaims[1-3,5-7],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  CHEMICAL ABSTRACTS, vol. 119, no. 18, 1 November 1993, Columbus, Ohio, US; abstract no. 194408h, DRAKE, S.R. ET AL.: "OXYGEN OR NITROGEN CHELATES STABILIZING BARIUM AND YTTRIUM .BETA.-DIKETONATES" page 993;,relevantClaims[1-3,5-7],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  IFTIKHAR, K. ET AL.: "MIXED-LIGAND COMPLEXES OF TRIVALENT LANTHANIDE IONS WITH .BETA.-DIKETONES AND HETEROCYCLIC AMINES", INORGANIC CHEMISTRY, vol. 21, no. 1, 1982, pages 80 - 84,relevantClaims[1-3,5-7],relevantPassages[&lt;table&gt;I&lt;/table&gt;];  CHEMICAL ABSTRACTS, vol. 113, no. 10, 3 September 1990, Columbus, Ohio, US; abstract no. 90325p, PONCELET, O. ET AL.: "SOLUBLE AND VOLATILE YTTRIUM AND COPPER ALKOXO-ACETYLACETONATO DERIVATIVES: SYNTHESIS AND CRYSTAL STRUCTURE OF Y3(.MU.3,.ETA.2-OC2H4OME)2(.MU.2,.ETA.2-OC2H4OME)2(.MU.2,.ETA.1-OC2H4OME)(ACAC)4" page 817;,relevantClaims[1-3],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  CHEMICAL ABSTRACTS, vol. 105, no. 22, 1 December 1986, Columbus, Ohio, US; abstract no. 202067z, DZUBENKO, N.G. ET AL.: "PROPERTIES AND STRUCTURE OF TRIS(ACETYLACETONATO)RARE EARTH ADDUCTS WITH O-PHENANTHROLINE" page 745;,relevantClaims[1-3],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  CHEMICAL ABSTRACTS, vol. 102, no. 2, 14 January 1985, Columbus, Ohio, US; abstract no. 16524j, TREMBOVETSKII, G.V.: "SYNTHESIS AND STUDY OF ADDUCTS OF TRIS(ACETYLACETONATOS) OF RARE EARTH ELEMENTS WITH ACETYLACETONIMINE" page 664;,relevantClaims[1-3],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  CHEMICAL ABSTRACTS, vol. 101, no. 20, 12 November 1984, Columbus, Ohio, US; abstract no. 180535p, GAVRISHCHUK, E.M. ET AL.: "STUDY OF VOLATILE CHELATES OF RARE EARTH ELEMENTS BY ELECTRON-IMPACT MASS SPECTROMETRY" page 686;,relevantClaims[1-3,5-7],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  CHEMICAL ABSTRACTS, vol. 93, no. 22, 1 December 1980, Columbus, Ohio, US; abstract no. 214661k, KHAN, B.T. ET A.: "COMPLEXES OF RARE EARTHS 2,4-PENTANEDIONATES WITH TRIPHENYLPHOSPHINE OXIDE AND TRIPHENYLARSINE OXIDE" page 695;,relevantClaims[1-3],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  CHEMICAL ABSTRACTS, vol. 109, no. 20, 14 November 1988, Columbus, Ohio, US; abstract no. 182505t, KUZ'MINA, N.P. ET AL.: "ADDITIONAL LIGAND INFLUENCE ON THE SELECTIVITY OF VACUUM SUBLIMATION OF ADDUCTS OF ACETYLACETONATES OF RARE-EARTH ELEMENTS" page 837;,relevantClaims[1-3],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  CHEMICAL ABSTRACTS, vol. 119, no. 24, 13 December 1993, Columbus, Ohio, US; abstract no. 261508f, GLEIZES, A. ET AL.: "YTTRIUM TETRAMETHYLHEPTANEDIONATES: SYNTHESES, CRYSTAL AND MOLECULAR STRUCTURES AND THERMAL BEHAVIORS OF TRIS(DIPIVALOYLMETHANATO)YTTRIUM AND ITS MONOHYDRATE" page 881;,relevantClaims[1-3,5-7],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  CHEMICAL ABSTRACTS, vol. 119, no. 14, 4 October 1993, Columbus, Ohio, US; abstract no. 151111p, TRIKHA, A.K. ET AL.: "STUDIES ON THE 1-METHYLPIPERAZINE ADDUCTS OF LANTHANIDE TRIS-6,6,7,7,8,8,8,8-HEPTAFLUOR-2,2-DIMETHYL-3,5-OCTANEDIONATES" page 851;,relevantClaims[1-3],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  CHEMICAL ABSTRACTS, vol. 119, no. 22, 29 November 1993, Columbus, Ohio, US; abstract no. 240398e, DRAKE, S.R. ET AL.: "LANTHANIDE .BETA.-DIKETONATE GLYME COMPLEXES EXHIBITING UNUSUAL COORDINATION MODES" page 1062;,relevantClaims[1,8-11],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;]GB2298203-A  CA vol 101 no 20 abstract 180535p & Deposited Doc 1982 VINITI 3676-83 249-253;  CA vol 102 no 2 abstract 16524j & Deposited Doc 1983 VINITI 7085-83 PT 2 303-306;  CA vol 105 no 22 abstract 202067z & ZH. NEORG KHIM.,vol 31 no 7, 1986 pages 1699-1705;  CA vol 109 no 20 abstract 182505t & METALLOORG KHIM vol 1 no 3, 1988 pages 575-579;  CA vol 113 no 10 abstract 90325p & INORG. CHEM.,vol 29 no 16 1990 pages 2883-2885;  CA vol 116 no 8 abstract 74713s & J RADIOANAL NUCL CHEM vol 152 no 2, 1991 pages 373-380;  CA vol 119 no 14 abstract 151111p & J FLUORINE CHEM vol 62 no 2-3, 1993 pages 139-43;  CA vol 119 no 18 abstract 194408h & INORG. CHEM.,vol 32 no 20, 1993 pages 4464-4471;  CA vol 119 no 22 abstract 240398e & J CHEM SOC DALTON TRANS no 15, 1993 pages 2379-2386;  CA vol 119 no 24 abstract 261508f & INORG CHIM ACTA vol 209 no 1, 1993 pages 47-53;  CA vol 119 no 4 abstract 30325w & ZH. NEORG. KHIM.,vol 28 no 4, 1983 pages 871-875;  CA vol 88 no 4 abstract 31390y & ZH NEORG KHIM vol 22 no 11, 1977 pages 3009-3012;  CA vol 93 no 22 abstract 214661k & INDIAN J CHEM SECT A vol 19A no 7, 1980 pages 701-702;  INORGANIC CHEMISTRY vol 21 no 1, 1982 pages 80-84GB2298203-B  CA vol 101 no 20 abstract 180535p & Deposited Doc 1982 VINITI 3676-83 249-253;  CA vol 102 no 2 abstract 16524j & Deposited Doc 1983 VINITI 7085-83 PT 2 303-306;  CA vol 105 no 22 abstract 202067z & ZH. NEORG KHIM.,vol 31 no 7, 1986 pages 1699-1705;  CA vol 109 no 20 abstract 182505t & METALLOORG KHIM vol 1 no3, 1988 pages 575-579;  CA vol 113 no 10 abstract 90325p & INORG. CHEM.,vol 29 no 161990 pages 2883-2885;  CA vol 116 no 8 abstract 74713s & J RADIOANAL NUCL CHEM vol 152 no 2, 1991 pages 373-380;  CA vol 119 no 14 abstract 151111p & J FLUORINE CHEM vol 62 no 2-3, 1993 pages 139-43;  CA vol 119 no 18 abstract 194408h & INORG. CHEM.,vol 32 no 20, 1993 pages 4464-4471;  CA vol 119 no 22 abstract 240398e & J CHEM SOC DALTON TRANS no 15, 1993 pages 2379-2386;  CA vol 119 no 24 abstract 261508f & INORG CHIM ACTA vol 209 no 1, 1993 pages 47-53;  CA vol 119 no 4 abstract 30325w & ZH. NEORG. 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