2004
DOI: 10.1002/anie.200353021
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Directed Reduction of Six‐Membered Nitrogen Heterocycles—Selective Formation of Polynuclear Titanium Complexes

Abstract: Two, three, four, or eight N‐heterocycles react in the coordination sphere of titanium(II) compounds to give polynuclear titanium complexes (see picture, red=TiCp2, blue=N, white=C). Simultaneously occurring CC couplings mark a new strategy for the synthesis of self‐assembled compounds of the early transition metals.

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Cited by 59 publications
(57 citation statements)
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“…This supports spontaneously C-C coupling reactions of 1,3-or 1,4dicyanobenzene, [12] adiponitrile, [12] 2,6-dicyanopyridine [13] or pyrazine [9,14] without or of quinoxalines [15] with C-H bond activation reactions and enable for instance the formation of the trinuclear complexes IV and V (Scheme 2). This supports spontaneously C-C coupling reactions of 1,3-or 1,4dicyanobenzene, [12] adiponitrile, [12] 2,6-dicyanopyridine [13] or pyrazine [9,14] without or of quinoxalines [15] with C-H bond activation reactions and enable for instance the formation of the trinuclear complexes IV and V (Scheme 2).…”
Section: Introductionsupporting
confidence: 69%
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“…This supports spontaneously C-C coupling reactions of 1,3-or 1,4dicyanobenzene, [12] adiponitrile, [12] 2,6-dicyanopyridine [13] or pyrazine [9,14] without or of quinoxalines [15] with C-H bond activation reactions and enable for instance the formation of the trinuclear complexes IV and V (Scheme 2). This supports spontaneously C-C coupling reactions of 1,3-or 1,4dicyanobenzene, [12] adiponitrile, [12] 2,6-dicyanopyridine [13] or pyrazine [9,14] without or of quinoxalines [15] with C-H bond activation reactions and enable for instance the formation of the trinuclear complexes IV and V (Scheme 2).…”
Section: Introductionsupporting
confidence: 69%
“…Complex 10 crystallizes in a rectangle with four different edge lengths and four different angles at the vertices. [9,10] The distance between titanium centers in the molecular square with pyrazine as bridging ligands was 7.20 Å. The complex has a "butterfly-like" arrangement ( Figure 6 left), and the zirconium atoms form a slightly distorted tetrahedron (Figure 6 right).…”
Section: Resultsmentioning
confidence: 99%
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“…After the first case of molecular square [{Pd(en)(l-4,4 0 -bipy)} 4 ](NO 3 ) 8 reported by Fujita and coworkers in 1990 [5], a series of supramolecules with platinum or palladium were developed in host-guest chemistry -encapsulating compounds, recognizing or trapping guest molecules, microreactors for specific reactions [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. Using metal centers as corners and organic linkers in the build up of molecular architectures led to materials with new properties.…”
Section: Introductionmentioning
confidence: 99%