Multinuclear NMR Studies of Palladium(II) Dihalide Complexes of Dibutyl {α-[4-(Phenyldiazenyl)anilino]benzyl}phosphonate

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Title:Multinuclear NMR Studies of Palladium(II) Dihalide Complexes of Dibutyl {α-[4-(Phenyldiazenyl)anilino]benzyl}phosphonate
Creators:
Tušek-Božic, Ljerka
Curic, Manda
Vikic-Topic, Dražen
Lyčka, Antonín
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 62, 12, pp. 1888-1904
Uncontrolled Keywords:Aminophosphonate ligands, <sup>1</sup>H, <sup>13</sup>C, <sup>15</sup>N and <sup>31</sup>P NMR spectroscopy, Phosphonates, Two-dimensional NMR, Chelates, Palladium complexes

Abstract

The <sup>1</sup>H, <sup>13</sup>C, <sup>15</sup>N and <sup>31</sup>P NMR studies of two types of palladium(II) dihalide complexes of dibutyl {α-[4-(phenyldiazenyl)anilino]benzyl}phosphonate (L) are reported: those with the monodentate <i>trans</i>-bonded ligands through the azo nitrogen, <i>trans</i>-Pd(L)<sub>2</sub>X<sub>2 </sub>(X = Cl, Br), and a cyclopalladated binuclear complex in which chloride ions bridge two metal centers, [Pd(L-H)(μ-Cl)]<sub>2</sub>. The <sup>15</sup>N-enriched organophosphorus compound and its palladium(II) complexes were also prepared to enable unambiguous determination of the nitrogen ligation site by <sup>15</sup>N NMR. The NMR analysis was accomplished by one- and two-dimensional homo- and heteronuclear experiments including <sup>1</sup>H-<sup>1</sup>H COSY, long-range <sup>1</sup>H-<sup>1</sup>H COSY, NOESY, <sup>1</sup>H-<sup>13</sup>C COSY, long-range <sup>1</sup>H-<sup>13</sup>C COSY, HMQC and HMBC. With the mononuclear complexes, the formation of isomeric species was observed, which are interpreted as rotational isomers caused by restricted rotation around the metal-ligand bond.

Title:Multinuclear NMR Studies of Palladium(II) Dihalide Complexes of Dibutyl {α-[4-(Phenyldiazenyl)anilino]benzyl}phosphonate
Creators:
Tušek-Božic, Ljerka
Curic, Manda
Vikic-Topic, Dražen
Lyčka, Antonín
Uncontrolled Keywords:Aminophosphonate ligands, <sup>1</sup>H, <sup>13</sup>C, <sup>15</sup>N and <sup>31</sup>P NMR spectroscopy, Phosphonates, Two-dimensional NMR, Chelates, Palladium complexes
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:62
Number:12
Page Range:pp. 1888-1904
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19971888UNSPECIFIED
ID Code:1263
Item Type:Article
Deposited On:06 Feb 2009 17:08
Last Modified:06 Feb 2009 16:08

Citation

Tušek-Božic, Ljerka; Curic, Manda; Vikic-Topic, Dražen; Lyčka, Antonín (1997) Multinuclear NMR Studies of Palladium(II) Dihalide Complexes of Dibutyl {α-[4-(Phenyldiazenyl)anilino]benzyl}phosphonate. Collection of Czechoslovak Chemical Communications, 62 (12). pp. 1888-1904. ISSN 0010-0765

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