monodentate ligand | ScienceGate

The chelate phosphanes Diphos, Diop, and Norphos were reacted with C5H5Mn(CO)2THF and CH3C5H4Mn(CO)2THF to give mononuclear complexes, containing the phosphanes as unidentate or as bidentate ligands, and dinuclear complexes, containing bridging phosphane ligands. In C5H5Mn(CO)2Diop one of the two P(C6H5)2 groups of Diop is coordinated to the C5H5Mn(CO)2 fragment; the uncoordinated P(C6H5)2 group makes it a monodentate ligand. C5H5Mn(CO)2Diop together with [Rh(cod)Cl]2 was used as an in situ catalyst in the enantioselective hydrogenation of (Z)-a-[N -acetam ino]cinnamic acid (78.4% ee) and in the enantioselective hydrosilylation of acetophenone with diphenylsilane (6.7% ee).

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Novel silver(I) compounds with 1-adamantanamine

Journal of the Serbian Chemical Society ◽

10.2298/jsc171114041j ◽

2018 ◽

Vol 83 (6) ◽

pp. 699-705 ◽

Cited By ~ 3

Author(s):

Dejan Jeremic ◽

Milena Djordjevic ◽

Srdjan Miletic ◽

Ljubica Andjelkovic ◽

Dusan Sladic ◽

...

Keyword(s):

Electron Donor ◽

Aliphatic Amine ◽

Biological Activities ◽

Spectroscopic Characterization ◽

Antibacterial Activities ◽

Monodentate Ligand ◽

Donor Ligand ◽

Minimum Inhibitory Concentrations ◽

New Compounds

In this work, three novel silver(I) complexes with an almost completely rigid and bulky monodentate ligand, 1-adamantanamine, were synthesized. The aliphatic amine, 1-adamantanamine, is the sole electron donor ligand in these complexes. In addition to spectroscopic characterization, the basic biological activities of the new compounds were investigated and their minimum inhibitory concentrations were determined. The antifungal and antibacterial activities indicate that these compounds could potentially be applied as new therapeutics.

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NITRATO ADDUCTS AND DERIVATIVES: SYNTHESIS AND INFRARED STUDY

Journal of Engineering Studies and Research ◽

10.29081/jesr.v23i1.256 ◽

2018 ◽

Vol 23 (1) ◽

Author(s):

MOUHAMADOU BIRAME DIOP ◽

LIBASSE DIOP

Keyword(s):

Infrared Spectroscopy ◽

Hydrogen Bonds ◽

Infinite Chain ◽

Monodentate Ligand ◽

Infrared Study ◽

Supramolecular Architectures ◽

Trigonal Bipyramidal ◽

Chain Type

<p>Five new nitrato adducts and derivatives have been synthesized and studied by infrared spectroscopy. The suggested structures are discrete or of infinite chain type, the nitrate behaving as a bidentate or a monodentate ligand, the environment around the tin (IV) centres being octahedral or trigonal bipyramidal. When extra hydrogen bonds are considered supramolecular architectures may be obtained.</p>

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The synthesis, molecular and crystal structure of the 1:1 adduct of triphenyltin chloride with 2,3-diphenylthiazolidin-4-one

Canadian Journal of Chemistry ◽

10.1139/v95-014 ◽

1995 ◽

Vol 73 (1) ◽

pp. 95-99 ◽

Cited By ~ 14

Author(s):

Frank E. Smith ◽

Rosemary C. Hynes ◽

John Tierney ◽

Ying Z. Zhang ◽

George Eng

Keyword(s):

Crystal Structure ◽

Structural Analysis ◽

Oxygen Atom ◽

Dutch Elm Disease ◽

Monoclinic Space Group ◽

Monodentate Ligand ◽

X Ray ◽

Trigonal Bipyramidal ◽

Triphenyltin Chloride ◽

Mössbauer Data

The title compound was synthesized as part of an effort to produce a more effective fungicide to combat Dutch Elm Disease (DED), which is caused by the fungus Ceratocystisulmi. A full X-ray structural analysis of the 1:1 adduct has been carried out and the results are reported along with the Mössbauer data for the compound. The crystals are monoclinic, space group P21/a with a = 19.240(3) Å, b = 9.1463(24) Å, c = 19.3512(24) Å, β = 118.874(8)°, V = 2982.0(10) Å3, z = 4, and Dcalc = 1.427 Mg m−3. The final discrepancy factors are RF = 0.056 and Rw = 0.058 for 1915 significant reflections. The QS and IS values in the Mössbauer spectrum of the complex are 3.08 mm s−1 and 1.28 mm s−1, respectively. The 2,3-diphenylthiazolidin-4-one behaves as a monodentate ligand and coordinates to the tin through the oxygen atom. The complex exhibits a trigonal bipyramidal configuration with the three phenyl groups in equatorial positions and the chloride and ligand oxygen occupying the apical sites. Keywords: triorganotin, fungicide, Dutch Elm Disease, thiazolidin-4-one.

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A new lanthanum(III) complex containing acetylacetone and 1H-imidazole

Acta Crystallographica Section E Crystallographic Communications ◽

10.1107/s205698901701461x ◽

2017 ◽

Vol 73 (11) ◽

pp. 1739-1742 ◽

Cited By ~ 1

Author(s):

Atsuya Koizumi ◽

Takuya Hasegawa ◽

Atsushi Itadani ◽

Kenji Toda ◽

Taoyun Zhu ◽

...

Keyword(s):

Bidentate Ligand ◽

Bidentate Ligands ◽

Monodentate Ligand ◽

Intermolecular Hydrogen Bonds ◽

Molecular Plane ◽

One Dimensional ◽

Nitrate N ◽

Dimensional Network ◽

Monodentate Ligands ◽

Nitrate Anions

In the title complex, diaqua(1H-imidazole-κN3)(nitrato-κ2O,O′)bis(4-oxopent-2-en-2-olato-κ2O,O′)lanthanum(III), [La(C5H7O2)2(NO3)(C3H4N2)(H2O)2], the La atom is coordinated by eight O atoms of two acetylacetonate (acac) anions acting as bidentate ligands, two water molecule as monodentate ligands, one nitrate anions as a bidentate ligand and one N atom of an imidazolate (ImH) molecule as a monodentate ligand. Thus, the coordination number of the La atom is nine in a monocapped square antiprismatic polyhedron. There are three types of intermolecular hydrogen bonds between ligands, the first involving nitrate–water O...H—O interactions running along the [001] direction, the second involving acac–water O...H—O interactions along the [010] direction and the third involving an Im–nitrate N—H...O interaction along the [100] direction (five interactions of this type). Thus, an overall one-dimensional network structure is generated. The molecular plane of an ImH molecule is almost parallel to that of a nitrate ligand, making an angle of only 6.04 (12)°. Interestingly, the ImH plane is nearly perpendicular to the planes of two neighbouring acac ligands.

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