Reactivity of the unsaturated dihydrides [Mn2(.mu.-H)2(CO)6(.mu.-L2)] (L2 = Ph2PCH2PPh2, (EtO)2POP(OEt)2) toward boron hydrides. X-ray crystal structure of [Mn2(.mu.-BH4)(.mu.-H)(CO)5(.mu.-Ph2PCH2PPh2)], a molecule displaying a novel coordination mode of the tetrahydroborate ligand

1993 ◽  
Vol 12 (5) ◽  
pp. 1946-1953 ◽  
Author(s):  
Remedios Carreno ◽  
Victor Riera ◽  
Miguel A. Ruiz ◽  
Claudette Bois ◽  
Yves Jeannin
Keyword(s):  
Crystal Structure ◽  
Coordination Mode ◽  
Boron Hydrides ◽  
X Ray

scholarly journals Synthesis and Crystal Structure Differences between Fully and Partially Fluorinated β-Diketonate Metal (Co2+, Ni2+, and Cu2+) Complexes

2011 ◽  
Vol 2011 ◽  
pp. 1-8 ◽  
Author(s):  
Akiko Hori ◽  
Masaya Mizutani
Keyword(s):  
Crystal Structure ◽  
Coordination Mode ◽  
Coordination Complexes ◽  
Protonated Form ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Π Interactions

Coordination complexes, [Co2(1)4(H2O)2] (2), [Ni2(1)4(H2O)2] (3), and [Cu(1)2] (4), by using an asymmetric and partially fluorinated 3-hydroxy-3-pentafluorophenyl-1-phenyl-2-propen-1-one (H1) have been prepared, and the structures were investigated to compare with the corresponding fully fluorinated complexes of [Co2(5)4(H2O)2] (6), [Ni2(5)4(H2O)2] (7), and [Cu(5)2] (8) with bis(pentafluorobenzoyl)methane (H5) and to understand the fluorine-substituted effects. While the coordination mode of the partially fluorinated complexes was quite similar to the fully fluorinated complexes, the intra- and intermolecular π-interactions of the ligand moieties were highly influenced by the fluorination effects; the arene-perfluoroarene interactions were observed in complexes 2 and 3 as a reason of the dinucleation. In this paper, we describe detail structures of the protonated form of the ligand, H1, and complexes 2–4 by X-ray crystallographic studies.

scholarly journals Isonicotinamide-Based Compounds: From Cocrystal to Polymer

Molecules ◽  
2019 ◽  
Vol 24 (22) ◽  
pp. 4169
Author(s):  
Francisco Sánchez-Férez ◽  
Daniel Ejarque ◽  
Teresa Calvet ◽  
Mercè Font-Bardia ◽  
Josefina Pons
Keyword(s):  
Crystal Structure ◽  
Coordination Polymer ◽  
Coordination Mode ◽  
Lattice Energy ◽  
Hirshfeld Surface ◽  
Molar Ratio ◽  
Reaction Conditions ◽  
X Ray ◽  
The One ◽  
2D And 3D

The reaction between [Cu(μ-OAc)(μ-Pip)(MeOH)]2 (1) (OAc = acetate; Pip = 1,3-benzodioxole-5-carboxylate) and isonicotinamide (Isn) in MeOH as solvent yielded two mixture pairs of three compounds: {(HPip)2(Isn) (2), [Cu(Pip)2(Isn)2] (3)} and {(3), {[Cu3(Pip)2(OAc)2(μ-Isn)2(Isn)2(μ-OCH3)2(MeOH)2]·2MeOH}n (4)}. Modifying the reaction conditions (t, T, molar ratio), 2 and 3 have been successfully isolated, whereas 3 and 4 had to be mechanically separated. The recrystallization of 3 in pentanol yielded single crystals of compound [Cu(Pip)2(Isn)2]·C5H11OH (3a). The X-ray crystal structure of 2, 3a, and 4 has been elucidated showing a cocrystal, a monomer, and an unusual coordination polymer, respectively. The Pip ligand exhibited a chelate (3a) or a monodentate (4) coordination mode, but the Isonicotinamide (Isn) ligand is the one that promoted the arrangement of different structures and also mainly directs the formation of the 2D and 3D supramolecular assemblies. All the structures have been analyzed by Hirshfeld surface. In addition, the energy frameworks and lattice energy values of 2 and 3a have been calculated.

scholarly journals The Fascinating Flexibility and Coordination Modes of a Pentamethylene Connected Macrocyclic CNC Pincer Ligand

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1669
Author(s):  
Ronja Jordan ◽  
Doris Kunz
Keyword(s):  
Crystal Structure ◽  
Coordination Chemistry ◽  
Nmr Spectroscopy ◽  
Carbon Atom ◽  
Coordination Mode ◽  
Alkyl Chain ◽  
Crystal Structure Analysis ◽  
Pincer Ligand ◽  
X Ray ◽  
Central Carbon

The coordination chemistry of an electron-rich macrocyclic CNC pincer-ligand consisting of two pentamethylene tethered N-heterocyclic carbene moieties on a carbazole backbone (bimcaC5) is investigated by mainly NMR spectroscopy and X-ray crystal structure analysis. A bridging coordination mode is found for the lithium complex. With the larger and softer potassium ion, the ligand adopts a facial coordination mode and a polymeric structure by intermolecular potassium nitrogen interactions. The facial coordination is also confirmed at a Cp*Ru fragment, while C-H activation under dehydrogenation at the alkyl chain is observed upon reaction with [Ru(PPh3)3Cl2]. In contrast, Pd(OAc)2 reacts under C-H activation at the central carbon atom of the pentamethylene tether to an alkyl-pincer macrocycle.

Reactions of Fe3(CO)12 and Fe(CO)5 with functionalized alkynes in CH3OH–KOH solution — The crystal structure of Fe2(CO)6(PPh3)[µ-η3-(H2CCCH2)]

2006 ◽  
Vol 84 (2) ◽  
pp. 337-344 ◽  
Author(s):  
Giuliana Gervasio ◽  
Domenica Marabello ◽  
Enrico Sappa ◽  
Andrea Secco
Keyword(s):  
Crystal Structure ◽  
Title Compound ◽  
Coordination Mode ◽  
Iron Complexes ◽  
Reaction Pathways ◽  
X Ray ◽  
Iron Carbonyls ◽  
By Products

The complex Fe2(CO)7(H2CCCH2) (1) is obtained starting from a variety of functionalized alkynes that can release C3 fragments during the reactions with Fe3(CO)12 or Fe(CO)5 in CH3OH–KOH solutions. Owing to the oily nature of 1, it was reacted with triphenylphosphine, and the structure of the resulting title compound (1a) has been determined by X-ray analysis. Complex 1a shows a new coordination mode of a H2C=C=CH2 ligand to a diiron centre and is, to our knowledge, unprecedented. We have also found that 1 (and 1a) are by-products, and not intermediates in the formation of complex 3. A discussion of the possible reaction pathways is given.Key words: iron carbonyls, alkynols, CO and methanol activation, acetyl and acetate complexes, allenyl iron complexes, crystal structure.

Unique Coordination Mode of Potassium Ions to Glycyrrhizin: X-ray Crystal Structure of Glycyrrhizin Dipotassium Salt

2009 ◽  
Vol 38 (11) ◽  
pp. 1024-1025 ◽  
Author(s):  
Yasuko In ◽  
Masaru Uchida ◽  
Masamichi Watanabe ◽  
Norio Aimi ◽  
Toshimasa Ishida
Keyword(s):  
Crystal Structure ◽  
Coordination Mode ◽  
Potassium Ions ◽  
X Ray ◽  
Dipotassium Salt

A novel coordination mode for a pyridylphosphine ligand. X-ray structures of [RuCl2(NO)L] (I) and [RuCl2(NO)L]·DMSO (II) (L = [(2-py)2PC2H4POO(2-py)2]-)

2001 ◽  
Vol 79 (5-6) ◽  
pp. 1030-1035 ◽  
Author(s):  
Alzir A Batista ◽  
Salete L Queiroz ◽  
Peter C Healy ◽  
Robbie W Buckley ◽  
Sue E Boyd ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Key Words ◽  
Coordination Mode ◽  
Ruthenium Complex ◽  
Distorted Octahedron ◽  
Monoclinic Space Group ◽  
Space Group ◽  
X Ray ◽  
Ruthenium Atom ◽  
Bonding Mode

The ruthenium(II) complex, [RuCl2(NO)L] (I), (L = [(2-py)2PC2H4PO2(2-py)]-) was obtained from recrystallization of RuCl3NO(d2pype) (d2pype = (2-py)2PC2H4P(2-py)2) in the presence of HNO3, crystallizing in the monoclinic space group P21 (no. 4), with a = 8.012(4) Å, b = 14.454(4) Å, c = 9.353(3) Å, β = 105.77(3)°, and Z = 2. Crystals of the DMSO solvate of the complex (II) were obtained from (CD3)2SO solution, crystallizing in the monoclinic space group P21/c (no.14) with a = 9.7080(2) Å, b = 22.2920(5) Å, c = 11.5230(3) Å, β = 92.0450(10)°, and Z = 4. In both complexes, the geometry about the ruthenium atom is a distorted octahedron mainly as a result of the tridentate [P,N,O]-bonding mode of L. The ν (NO) bands at 1875 cm–1 in both complexes are consistent with the linear disposition of the NO group and the Ru atom as is observed in the X-ray crystal structure (Ru-N1-O1 angle = 178.5(4)°).Key words: pyridylphosphine, nitrosyl, ruthenium complex, X-ray structure.

Coordination and Reactions of Diazenes in Trimethylphosphinecobalt(I). Complexes - Syntheses and Structures of Complexes Containing μ2-(N,N′)-Benzo[c]cinnoline and η2-Azobenzene Ligands

1993 ◽  
Vol 48 (6) ◽  
pp. 778-784 ◽  
Author(s):  
Hans-Friedrich Klein ◽  
Michael Helwig ◽  
Udo Koch ◽  
Ulrich Flörke ◽  
Hans-Jürgen Haupt
Keyword(s):  
Crystal Structure ◽  
Coordination Mode ◽  
X Ray ◽  
Structure Determinations ◽  
Metallation Reaction ◽  
Mononuclear Compounds

Mononuclear compounds CpCo(η2-azobenzene)(PMe3) (1) or ortho-metallated (2) are obtained from azobenzene and CpCo(PMe3)2 or CoMe(PMe3)4, respectively. With 4-acetoxo-azobenzene the ortho-metallation reaction gives isomers , (3A) and (3B) in a 1:1 ratio. Carbonylation of 2 gives (4). Benzo[c]cinnoline affords CoCH3(η2-C12H8N2)(PMe3)3 (5) and μ2-(N ,N′)-C12H8N2(CoCp)[CoCp(PMe3)] (6). The coordination mode of the diazene ligands in 1 and 6 has been shown by X-ray crystal structure determinations. Dynamic N M R spectroscopy indicates intramolecular hopping of trimethylphosphine across the CoCo bond in 6.

New coordination mode of bis(diphenylphosphine) methanide diselenide. Synthesis and X-ray crystal structure of [(η5 C5Me5)Rh{η3 (SePPh2)2CH&}]ClO4

Polyhedron ◽  
1994 ◽  
Vol 13 (6-7) ◽  
pp. 1101-1103 ◽  
Author(s):  
Mauricio Valderrama ◽  
Raul Contreras ◽  
Manuel Bascun˜an ◽  
Daphne Boys
Keyword(s):  
Crystal Structure ◽  
Coordination Mode ◽  
X Ray
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