scholarly journals Co(II) Amide, Pyrrolate, and Aminopyridinate Complexes: Assessment of their Manifold Structural Chemistry and Thermal Properties

2021 ◽  
Author(s):  
David Zanders ◽  
Nils Boysen ◽  
Michael A. Land ◽  
Jorit Obenlüneschloß ◽  
Jason D. Masuda ◽  
...  
Keyword(s):  
Thermal Characteristics ◽  
Coordination Geometry ◽  
Coordination Environment ◽  
Trigonal Bipyramidal ◽  
Composition And Structure ◽  
Distorted Trigonal Bipyramidal Coordination ◽  
Counter Cation ◽  
New Compounds ◽  
Distorted Tetrahedral Coordination ◽  
Distorted Trigonal Bipyramidal

A series of cobalt(II) (silyl)amides, pyrrolates and aminopyridinates were synthesized. Inspired by the dimeric bis(trimethylsilylamido)cobalt(II) complex ([Co(TMSA)2]2), facile salt metathesis employing the ligand 2,2,5,5-tetramethyl-1,2,5-azadisilolidinyl (TMADS) yielded its congener [Co(TMADS)2]2. Novel, heteroleptic Lewis adducts of the former resulted in unusual three- to four-fold coordination geometry around the metal center. Similarily, the salt [Co(TMADS)3Li(DAD)2] was isolated which demonstrates an ion separated Co(II) anion with silylamide ligation and Li+ counter cation. Transpyrrolylation using [Co(TMSA)2]2 was established for the synthesis of bis[N,N’-2-(dimethylaminomethyl)pyrrolyl]cobalt(II), and bis(N-2-(tert-butyliminomethyl)pyrrolyl)cobalt(II). Treatment of CoCl2 with two equivalents of lithiated N,N-dimethyl(N’-tert-butyl)ethane-1-amino-2-amide and N,N-dimethyl(N’-trimethylsilyl)ethane-1-amino-2-amide resulted in the respective Co(II) amido-amines. Reaction of CoCl2 with lithium 4-methyl-N-(trimethylsilyl)pyridine-2-amide yielded the first binuclear, homoleptic Co(II) aminopyridinate complex with a distorted trigonal bipyramidal coordination environment (τ5 = 0.533) for one central Co(II) ion and a weakly distorted tetrahedral coordination geometry (τ4 = 0.845) for the other. All of the new compounds were thoroughly characterized in terms of composition and structure. Finally, the key thermal characteristics of volatility and thermal stability were assessed using a combination of thermogravimetric analysis and complementary bulk sublimation experiments.

A novel three-dimensional AgIcoordination polymer based on mixed naphthalene-1,5-disulfonate and aminoacetate ligands

2013 ◽  
Vol 69 (8) ◽  
pp. 876-879
Author(s):  
Hua Wu ◽  
Xiao-Li Lü ◽  
Bo Lü ◽  
Chang-Xun Dong ◽  
Mei-Sheng Wu
Keyword(s):  
Three Dimensional ◽  
Water Molecules ◽  
Coordination Geometry ◽  
Tetrahedral Coordination ◽  
One Dimensional ◽  
Trigonal Bipyramidal ◽  
Hydrogen Bonding Interactions ◽  
Distorted Trigonal Bipyramidal Coordination ◽  
Distorted Tetrahedral Coordination ◽  
Distorted Trigonal Bipyramidal

The three-dimensional coordination polymer poly[[bis(μ3-2-aminoacetato)di-μ-aqua-μ3-(naphthalene-1,5-disulfonato)-hexasilver(I)] dihydrate], {[Ag6(C10H6O6S2)(C2H4NO2)4(H2O)2]·2H2O}n, based on mixed naphthalene-1,5-disulfonate (L1) and 2-aminoacetate (L2) ligands, contains two AgIcentres (Ag1 and Ag4) in general positions, and another two (Ag2 and Ag3) on inversion centres. Ag1 is five-coordinated by three O atoms from oneL1 anion, oneL2 anion and one water molecule, one N atom from oneL2 anion and one AgIcation in a distorted trigonal–bipyramidal coordination geometry. Ag2 is surrounded by four O atoms from twoL2 anions and two water molecules, and two AgIcations in a slightly octahedral coordination geometry. Ag3 is four-coordinated by two O atoms from twoL2 anions and two AgIcations in a slightly distorted square geometry, while Ag4 is also four-coordinated by two O atoms from oneL1 and oneL2 ligand, one N atom from anotherL2 anion, and one AgIcation, exhibiting a distorted tetrahedral coordination geometry. In the crystal structure, there are two one-dimensional chains nearly perpendicular to one another (interchain angle = 87.0°). The chains are connected by water molecules to give a two-dimensional layer, and the layers are further bridged byL1 anions to generate a novel three-dimensional framework. Moreover, hydrogen-bonding interactions consolidate the network.

Chloridobis(1,10-phenanthroline-κ2 N,N′)copper(I) hexahydrate

2007 ◽  
Vol 63 (3) ◽  
pp. m826-m828 ◽  
Author(s):  
H. Zhong ◽  
X.-R. Zeng ◽  
X.-M. Yang ◽  
Q.-Y. Luo ◽  
S.-Z. Xiao
Keyword(s):  
Three Dimensional ◽  
Water Molecules ◽  
Stacking Interactions ◽  
Coordination Geometry ◽  
Rotation Axes ◽  
Trigonal Bipyramidal ◽  
Distorted Trigonal Bipyramidal Coordination ◽  
Cl Atom ◽  
Phenanthroline Ligands ◽  
Distorted Trigonal Bipyramidal

The CuI atom in the title complex, [CuCl(C12H8N2)2]·6H2O, exists in a distorted trigonal-bipyramidal coordination geometry defined by one Cl atom and four N atoms of two 1,10-phenanthroline ligands. In the crystal structure, molecules are linked into a three-dimensional framework by O—H...O hydrogen bonds and π–π stacking interactions. Four water molecules lie on crystallographic twofold rotation axes.

Poly[aqua[μ4-3,3′-(diazenediyl)dibenzoato]zinc]

2012 ◽  
Vol 69 (1) ◽  
pp. 29-32 ◽  
Author(s):  
Lei-Lei Liu ◽  
Feng Zhao
Keyword(s):  
Water Molecule ◽  
Rotation Axis ◽  
Three Dimensional ◽  
Solvothermal Reaction ◽  
Coordination Geometry ◽  
One Dimensional ◽  
Trigonal Bipyramidal ◽  
Carboxylate Groups ◽  
Distorted Trigonal Bipyramidal Coordination ◽  
Distorted Trigonal Bipyramidal

The solvothermal reaction of Zn(OAc)2·2H2O with 3,3′-(diazenediyl)dibenzoic acid (H2ADB) in H2O at 393 K afforded the title complex, [Zn(C14H8N2O4)(H2O)]n. The asymmetric unit contains half a ZnIIcation, half an ADB ligand and half a water molecule. Each ZnIIcentre lies on a crystallographic twofold rotation axis and is five-coordinated by four O atoms of bridging carboxylate groups from four ADB ligands and one O atom from a water molecule, forming a distorted trigonal–bipyramidal coordination geometry. The [Zn(H2O)] subunits are bridged by carboxylate groups to give one-dimensional [Zn(μ-COO)4(H2O)]nchains. The chains are linked by ADB ligands into two-dimensional sheets, and these sheets are further connected to neighbouring sheetsviahydrogen bonds (OW—HW...O), forming a three-dimensional hydrogen-bond-stabilized structure with an unprecedented 374175262topology.

scholarly journals Crystal structure of tricarbonyl(N-diphenylphosphanyl-N,N′-diisopropyl-P-phenylphosphonous diamide-κ2P,P′)cobalt(I) tetracarbonylcobaltate(−I) toluene 0.25-solvate

2014 ◽  
Vol 70 (12) ◽  
pp. 533-535
Author(s):  
Laura Dura ◽  
Anke Spannenberg ◽  
Torsten Beweries
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Coordination Geometry ◽  
Asymmetric Unit ◽  
Structural Element ◽  
Trigonal Bipyramidal ◽  
Toluene Molecule ◽  
Distorted Trigonal Bipyramidal Coordination ◽  
Interionic Hydrogen ◽  
Distorted Trigonal Bipyramidal

The asymmetric unit of the title compound, [Co(C24H30N2P2)(CO)3][Co(CO)4]·0.25C7H8, consists of two crystallographically independent cations with similar conformations, two anions, and one-half of a toluene molecule disordered about an inversion centre. In the cations, a Co/P/N/P four-membered slightly bent metallacycle is the key structural element. The pendant NH group is not coordinated to the CoIatom, which displays a distorted trigonal–bipyramidal coordination geometry. Weak interionic hydrogen bonds are observed between the NH groups and a carbonyl group of the tetrahedral [Co(CO)4]−anions.

scholarly journals Crystal structure of tris(dimethylamido-κN)bis(dimethylamine-κN)zirconium(IV) iodide

2016 ◽  
Vol 72 (1) ◽  
pp. 73-75 ◽  
Author(s):  
Wesley D. Clark ◽  
Gopalakrishna Akurathi ◽  
Henry U. Valle ◽  
T. Keith Hollis
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Coordination Geometry ◽  
Oxide Fuel ◽  
Trigonal Bipyramidal ◽  
Zirconium Complexes ◽  
Distorted Trigonal Bipyramidal Coordination ◽  
Distorted Trigonal Bipyramidal

Zirconium amides have become increasingly popular and useful due to their widespread use as precursors to other zirconium complexes and their use in the production of solid oxide fuel cells (SOFCs). Herein we report the molecular structure of tris(dimethylamido)bis(dimethylamine)zirconium(IV) iodide, [Zr(C2H6N)3(C2H7N)2]I. The bond lengths and bond angles are consistent with a slightly distorted trigonal–bipyramidal coordination geometry around the metal atom. N...I contacts of 3.6153 (15) and 3.5922 (14) Å are consistent with the presence of N—H...I interactions. These N—H...I interactions link the complex cations and iodide anions into extended chains that propagate parallel to theaaxis.

μ-Oxalato-κ4 O,O′:O′′,O′′′-bis[chloro(1,10-phenanthroline-κ2 N,N′)copper(II)]

2007 ◽  
Vol 63 (3) ◽  
pp. m710-m711 ◽  
Author(s):  
Min Wang ◽  
Bo Hu ◽  
Xiao-Tao Deng ◽  
Cheng-Gang Wang
Keyword(s):  
Stacking Interactions ◽  
Coordination Geometry ◽  
Phen Ligand ◽  
Inversion Center ◽  
Dimeric Complex ◽  
Trigonal Bipyramidal ◽  
Oxalate Ligand ◽  
Distorted Trigonal Bipyramidal Coordination ◽  
Cl Atom ◽  
Distorted Trigonal Bipyramidal

In the title dimeric complex, [Cu2(C2O4)Cl2(C12H8N2)2], which lies on a crystallographic inversion center, the CuII ion is in a distorted trigonal–bipyramidal coordination geometry formed by two N atoms from a phen ligand, two O atoms from a bridging oxalate ligand and one Cl atom. In the crystal structure, pairs of molecules related by π–π stacking interactions are stacked along the c-axis direction

scholarly journals Dibromido{N′-[1-(pyridin-2-yl)ethylidene]picolinohydrazide-κ2 N′,O}cadmium

2012 ◽  
Vol 68 (6) ◽  
pp. m842-m842 ◽  
Author(s):  
Mehmet Akkurt ◽  
Ali Akbar Khandar ◽  
Muhammad Nawaz Tahir ◽  
Seyed Abolfazl Hosseini Yazdi ◽  
Farhad Akbari Afkhami
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Tridentate Ligand ◽  
Stacking Interactions ◽  
Coordination Geometry ◽  
Trigonal Bipyramidal ◽  
Centroid Distance ◽  
Distorted Trigonal Bipyramidal Coordination ◽  
Distorted Trigonal Bipyramidal

The title compound, [CdBr2(C13H12N4O)], was obtained from the reaction of Cd(NO3)2·4H2O with methyl(pyridin-2-yl)methanone picolinoylhydrazone and sodium bromide. The Cd2+ cation is ligated by one O atom and two N atoms of the tridentate ligand and two bromide anions, forming a Br2CdN2O polyhedron with a distorted trigonal–bipyramidal coordination geometry. In the crystal, non-classical C—H...Br hydrogen bonds are observed. In addition, π–π stacking interactions [centroid–centroid distance = 3.7455 (19) Å] contribute to the stabilization of the crystal structure.

Aqua[tris(1H-benzimidazol-2-ylmethyl)amine]copper(II) bis(perchlorate) 4-nitropyridine N-oxide monohydrate

2006 ◽  
Vol 62 (7) ◽  
pp. m1708-m1710 ◽  
Author(s):  
Hui-Lu Wu ◽  
Wen-Kui Dong ◽  
Ying Chen
Keyword(s):  
Water Molecule ◽  
Coordination Geometry ◽  
Molecular Symmetry ◽  
Trigonal Bipyramidal Coordination ◽  
Trigonal Bipyramidal ◽  
Distorted Trigonal Bipyramidal Coordination ◽  
Distorted Trigonal Bipyramidal

In the title structure, [Cu(C24H21N7)(H2O)](ClO4)2·C5H4N2O3·H2O, the CuII atom is bonded to a tris(1H-benzimidazol-2-ylmethyl)amine (ntb) ligand and a water molecule through four N atoms and one O atom, giving a distorted trigonal–bipyramidal coordination geometry with approximate C 3 molecular symmetry.

scholarly journals Crystal structure of tetrakis[μ-3-carboxy-1-(1,2,4-triazol-4-yl)adamantane-κ2 N 1:N 2]tetrafluoridodi-μ2-oxido-dioxidodisilver(I)divanadium(V) tetrahydrate

2019 ◽  
Vol 75 (6) ◽  
pp. 808-811 ◽  
Author(s):  
Ganna A. Senchyk ◽  
Andrey B. Lysenko ◽  
Eduard B. Rusanov ◽  
Kostiantyn V. Domasevitch
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Functional Group ◽  
Crystal Packing ◽  
Water Molecules ◽  
Coordination Environment ◽  
Trigonal Bipyramidal ◽  
Distorted Trigonal Bipyramidal Coordination ◽  
Acid Functional Group ◽  
Distorted Trigonal Bipyramidal

The crystal structure of the title molecular complex, [Ag2{VO2F2}2(C13H17N3O2)4]·4H2O, supported by the heterofunctional ligand tr-ad-COOH [1-(1,2,4-triazol-4-yl)-3-carboxyadamantane] is reported. Four 1,2,4-triazole groups of the ligand link two AgI atoms, as well as AgI and VV centres, forming the heterobimetallic coordination cluster {AgI 2(VVO2F2)2(tr)4}. VV exists as a vanadium oxofluoride anion and possesses a distorted trigonal–bipyramidal coordination environment [VO2F2N]. A carboxylic acid functional group of the ligand stays in a neutral form and is involved in hydrogen bonding with solvent water molecules and VO2F2 − ions of adjacent molecules. The extended hydrogen-bonding network is responsible for the crystal packing in the structure.

scholarly journals Crystal structure of poly[[aqua(μ-2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxylato-κ2O5:O7)[μ-di(pyridin-4-yl)sulfane-κ2N:N′]zinc] 0.26-hydrate]

2017 ◽  
Vol 73 (3) ◽  
pp. 375-377
Author(s):  
Wen-Liang Wu ◽  
Bing Hu
Keyword(s):  
Crystal Structure ◽  
Coordination Environment ◽  
Zinc Cation ◽  
Ethylene Bridge ◽  
Pyridine Ligands ◽  
Trigonal Bipyramidal ◽  
Hydrogen Bonding Interactions ◽  
Carboxylate Groups ◽  
Distorted Trigonal Bipyramidal Coordination ◽  
Distorted Trigonal Bipyramidal

The crystal structure of the title polymer, {[Zn(C8H4O6S)(C10H8N2S)(H2O)]·0.26H2O}n, is characterized by a layered arrangement parallel to theabplane. The zinc cation is five-coordinated in a slightly distorted trigonal–bipyramidal coordination environment defined by two pyridine ligands, two carboxylate groups of two thiophene dicarboxylate ligands, and by one water molecule. The ethylene bridge in the dioxine ligand is disordered over two sets of sites [occupancy ratio 0.624 (9):0.376 (9)]. Several hydrogen-bonding interactions of the types O—H...O, C—H...O, C—H...S and C—H...N ensure the cohesion within the crystal structure.

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