The new facial tripod ligand 3,3-bis(1-methylimidazol-2-yl)propionic acid and carbonyl complexes thereof containing manganese and rhenium

Peters, Liv; Hübner, Eike G.; Burzlaff, Nicolai

doi:10.1016/j.jorganchem.2004.11.041

Cited by 34 publications

(29 citation statements)

References 25 publications

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“…Fe(PyProPh 2 OH)Cl 2 (16) and Fe(6-Me-PyProPh 2 OH)Cl 2 (17). For the last two complexes crystals suitable for X-ray analyses were obtained by diffusion of ether into a dichloromethane solution of the corresponding complex.…”

Section: Fe-chloride Complexesmentioning

confidence: 99%

“…Non-hydrogen atoms were refined freely with anisotropic displacement parameters. Hydrogen atoms were introduced in calculated positions (10, 12a, 13) or located in difference Fourier maps (12b, [14][15][16][17]. Hydrogen atoms were refined with a riding model, the N-H or O-H hydrogen atoms of 12b, 14, and 15 were refined freely with isotropic displacement parameters.…”

Section: X-ray Crystal Structure Determinationsmentioning

confidence: 99%

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Facial triad modelling using ferrous pyridinyl prolinate complexes: synthesis and catalytic applications

et al. 2014

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Section: Fe-chloride Complexesmentioning

confidence: 99%

Section: X-ray Crystal Structure Determinationsmentioning

confidence: 99%

Facial triad modelling using ferrous pyridinyl prolinate complexes: synthesis and catalytic applications

et al. 2014

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“…[20] Recently, we and others successfully discussed the binding of imidazole-and pyrazolebased N,N,O ligands by means of their frontier orbitals. [11] (HOMO-2, IVc).…”

Section: Dft Calculationsmentioning

confidence: 99%

“…Reaction of Na Our recent work focuses on derivatives of such N,N,O ligands, to broaden the field of available heteroscopionate ligands with various electronic and steric properties. So far examples of chiral bis(1H-pyrazol-1-yl)acetic acids, [10] 3,3-bis(imidazol-2-yl)propionic acids [11] or 2-[bis(1H-pyrazol-1-yl)methyl]phenolates [12] have been obtained. Moreover, tricarbonylrhenium complexes are of particular interest as model compounds for radiopharmaceutical applications.…”

Section: Introductionmentioning

confidence: 99%

N,N,O Ligands Based on Triazoles and Transition Metal Complexes Thereof

et al. 2010

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The reaction of 2H-benzotriazole (1) with dichloroacetic acid leads to the symmetric bis(2H-benzotriazol-2-yl)methane (2c) in 40 % yield. Deprotonation of 2c at the bridging methylene group and subsequent carboxylation with CO 2 yielded the new tripodal N,N,O ligand bis(2H-benzotriazol-2-yl)acetic acid Hbbta (3). The sterically less demanding sodium 3,3-bis(1H-1,2,4-triazol-1-yl)propionate Na[btp] (5) was obtained by saponification of methyl 3,3-bis(1H-1,2,4-triazol-1-yl)propionate (4). The heteroscorpionate ligand 3 was treated with [MnBr(CO) 5 ] and [RuCl 2 (PPh 3 ) 3 ] to form the manganese tricarbonyl complex [Mn(bbta)(CO) 3 ] (6) and the air stable ruthenium complex [Ru(bbta)Cl(PPh 3 ) 2 ] (7). DFT calculations and the IR spectra of the carbonyl complex 6 reveal ligand 3

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“…Preparing accurate synthetic models for these sites requires ligands bearing imidazole groups. Many synthetic copper model compounds have been prepared with a variety of saturated polydentate amine, pyridine, and pyrazolylborate-based ligands [9][10][11][12][13][14], few groups, however, have incorporated the biologically most relevant bis/tris(imidazole) donors [15][16][17][18][19][20][21], which have significantly different donor/acceptor properties [22][23][24][25]. Previously tris(imidazol-2-yl)phosphine tripodal ligands were employed as histidine mimics for synthetic model studies [26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, structure and properties of tris(1-ethyl-4-isopropyl-imidazolyl-κN)phosphine copper(II)

Morrison

Molenda

et al. 2015

Inorganica Chimica Acta

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a b s t r a c tIn this study we report the synthesis and characterization of [Cu(T1Et4iPrIP)(CH 3 OH)Cl]Cl (1) (T1Et4iPrIP = tris(1-ethyl-4-isopropyl-imidazolyl)phosphine). T1Et4iPrIP serves as a His 3 biomimetic ligand binding metals through the 3-nitrogen of the imidazolyl group. The structure of 1 features copper(II) bonded to three nitrogen ligands from T1Et4iPrIP along with an oxygen ligand from methanol and a chloride ligand to form slightly distorted square pyramidal geometry with an imidazole group occupying the axial position and the methanol and chloride ligands situated in the basal plane. The weak sigma donation of the ligand set results in low energy d-d electronic transitions and small A k (131 G). Time-dependent DFT calculations (B3LYP, 6-311+G(d,p)) on the optimized structure of 1 in methanol solvent allowed for the assignment of specific electronic transitions in the UV-Vis spectrum. The highest occupied molecular orbital (HOMO) was noted to consist of 65% Cu-d character identified as the d x 2 Ày 2 orbital.

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The new facial tripod ligand 3,3-bis(1-methylimidazol-2-yl)propionic acid and carbonyl complexes thereof containing manganese and rhenium

Cited by 34 publications

References 25 publications

Facial triad modelling using ferrous pyridinyl prolinate complexes: synthesis and catalytic applications

Facial triad modelling using ferrous pyridinyl prolinate complexes: synthesis and catalytic applications

N,N,O Ligands Based on Triazoles and Transition Metal Complexes Thereof

Synthesis, structure and properties of tris(1-ethyl-4-isopropyl-imidazolyl-κN)phosphine copper(II)

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