Enhancing N, P, S-Janus Head Tripod Ligands by Oxidation

2011 ◽  
Vol 637 (14-15) ◽  
pp. 2233-2238 ◽  
Author(s):  
Margret M. Meinholz ◽  
Dietmar Stalke
Keyword(s):  
Tripod Ligands

Synthesis of C1-Symmetric Tripod Ligands Containing a P,P,N Donor Set − η2-Coordination in d8-Metal Complexes

2003 ◽  
Vol 2003 (9) ◽  
pp. 1681-1693 ◽  
Author(s):  
Ralf Faissner ◽  
Gottfried Huttner ◽  
Elisabeth Kaifer ◽  
Peter Rutsch
Keyword(s):  
Metal Complexes ◽  
Tripod Ligands

Kinetics and mechanism of the catalytic dehydration of HCO3 − by zinc(II) complexes of tripod ligands

2004 ◽  
Vol 36 (3) ◽  
pp. 197-203 ◽  
Author(s):  
Qingchun Ge ◽  
Yanhe Guo ◽  
Hai Lin ◽  
Huakuan Lin ◽  
Shourong Zhu
Keyword(s):  
Kinetics And Mechanism ◽  
Tripod Ligands

scholarly journals Funktionalisierte tripod-Liganden mit Neopentan-Grundgerüst: Umsetzung von HOCH2C(CH2PR2)3 mit Elektrophilen / Functionalized tripod-Ligands with N eopentane Fram ew ork: R eaction of HOCH2C(CH2PR2)3 with Electrophiles

1995 ◽  
Vol 50 (9) ◽  
pp. 1287-1306 ◽  
Author(s):  
Thomas Seitz ◽  
Alexander Asam ◽  
Gottfried Hüttner ◽  
Olaf Walter ◽  
Laszlo Zsolnai
Keyword(s):  
Hydroxy Group ◽  
Analytical Techniques ◽  
One Pot ◽  
X Ray ◽  
One Pot Synthesis ◽  
Tripod Ligands ◽  
Esterification Reactions ◽  
New Compounds

AbstractSeveral ways to functionalize hydroxy-tripod-ligands (HOCH2C(CH2PR2)3) by activation with electrophiles are presented. The use of carboxylic halides and anhydrides is shown to be generally successful for esterification reactions in a one-pot synthesis starting from the oxetanes O(CH2)2C(CH2PR2)2. Facial coordinaton of the related esters towards iron(II) and molybdenum(O) can be achieved depending on the nature of the phosphane donor groups. If methyliodide or trimethylsilylchloride are used as electrophiles in order to functionalize the hydroxy group in HOCH2C(CH2PR2)3, it is necessary to proctect the phosphane groups by formation of the tris-borane adduct. All new compounds have been fully characterized by the usual analytical techniques as well as by X-ray analyses on selected examples.

tripod-Eisen- und tripod-Cobalt-Komplexe mit Acetonitril als Stützliganden (tripod = RCH2C(CH2PPh2)3; R = H, Ph) / tripod-Iron and tripod-Cobalt-Complexes with Acetonitrile as Supporting Ligands (tripod = RCH2C(CH2PPh2)3; R = H, Ph)

1993 ◽  
Vol 48 (12) ◽  
pp. 1707-1714 ◽  
Author(s):  
A. Asam ◽  
B. Janssen ◽  
G. Huttner ◽  
L. Zsolnai ◽  
O. Walter
Keyword(s):  
Cyclic Voltammetry ◽  
Analytical Techniques ◽  
Cobalt Complexes ◽  
X Ray ◽  
Tripod Ligands ◽  
Reversible Reduction

The tripod ligands RCH2C(CH2PPh2)3 react with (CH3CN)6Fe(BF4)2 to yield the tripod-Fe(II) complexes RCH2C(CH2PPh2)3Fe(CH3CN)3(BF4)2 (R = H, la; R = Ph, lb). The octahedral low spin Fe(II) compounds are shown by cyclic voltammetry to undergo reversible one electron oxidation at +1.47 V (vs. SCE) to give the corresponding Fe(III) derivatives.In a similar way (CH3CN)6Co(BF4)2 reacts with the same tripod ligands to produce the tripod-Co(II) complexes RCH2C(CH2PPh2)3Co(CH3CN)2(BF4)2 (R = H, 2a; R = Ph, 2b). The compounds are paramagnetic (2a, g = 2.123; 2b, g = 2.129). The structure of complex 2b shows that the tripod ligand is facially coordinated with one longer (233.1 pm) and two shorter (about 222 pm) Co—P bonds. Reversible reduction is found for 2a at —0.30 V by cyclic voltammetry. The compounds have been characterized by spectroscopic and analytical techniques including X-ray analyses.

Synthesis, structure, and properties of the novel iron complex of mixed .kappa.3N- and .kappa.3O-tripod ligands: [n-Bu4N][(HB(pz)3)Fe(P3O9)]

1993 ◽  
Vol 32 (11) ◽  
pp. 2597-2599 ◽  
Author(s):  
Kyu Nam Han ◽  
Dongmok Whang ◽  
Hae Jeong Lee ◽  
Youngkyu Do ◽  
Kimoon Kim
Keyword(s):  
Iron Complex ◽  
The Novel ◽  
Structure And Properties ◽  
Tripod Ligands

Tetradentate Tripod Ligands Containing Nitrogen, Sulfur, Phosphorus, and Arsenic as Donor Atoms

2007 ◽  
pp. 174-180 ◽  
Author(s):  
R. Morassi ◽  
L. Sacconi ◽  
C. A. Mcauliffe ◽  
W. Levason
Keyword(s):  
Tripod Ligands
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