Chemistry of polydentate ligands. Part 7. Synthesis, characterisation, and properties of some manganese(II) complexes of quinquedentate macrocyclic ligands based on 1,10-phenanthroline. Crystal and molecular structure of a complex with pentagonal-pyramidal coordination geometry about the Mn II

1980 ◽  
pp. 1383 ◽  
Author(s):  
Jack Lewis ◽  
Timothy D. O'Donoghue ◽  
Paul R. Raithby
Keyword(s):  
Molecular Structure ◽  
Crystal And Molecular Structure ◽  
Macrocyclic Ligands ◽  
Coordination Geometry ◽  
Polydentate Ligands

Crystal and molecular structure of bis[methyltris(1-pyrazolyl)gallato]nickel(II)

1979 ◽  
Vol 57 (14) ◽  
pp. 1823-1825 ◽  
Author(s):  
Steven J. Rettig ◽  
Alan Storr ◽  
James Trotter
Keyword(s):  
Molecular Structure ◽  
Crystal And Molecular Structure ◽  
Direct Methods ◽  
Nickel Atom ◽  
Exact Formula ◽  
Coordination Geometry ◽  
Tetrahedral Coordination ◽  
Gallium Atom ◽  
Full Matrix ◽  
Distorted Tetrahedral Coordination

Crystals of bis[methyltris(1-pyrazolyl)gallato]nickel(II) are rhombohedral, a = 9.6670(5), c = 23.893(1) Å, Z = 3, space group [Formula: see text]. The structure was solved by direct methods and was refined by full-matrix least-squares procedures to a final R of 0.030 and Rw = 0.035 for 925 reflections with I ≥ 3σ (I). The crystal structure consists of well separated molecules of [MeGa-(N2C3H3)3]2Ni having exact [Formula: see text] (S6) symmetry and approximate D3d symmetry. The coordination geometry about the nickel atom is octahedral with Ni—N = 2.109(2) Å, N—Ni—N = 90.65(6) and 89.35(6)°. The gallium atom has distorted tetrahedral coordination geometry with Ga—N = 1.939(2), Ga—C = 1.940(4) Å, N—Ga—N = 99.55(6), and N—Ga—C = 118.16(5)°.

Acyclische Liganden mit fixierter Koordinationsgeometrie, 1:2-Komplexe von Cobalt(II) mit den Anionen von 2.2′-Dihydroxydiphenyloxid und -sulfid -Kristall-und Molekülstruktur von Natrium-bis[diphenylsulfid-2.2′ -diolato(2-)]cobaltat(II>- Aceton-Wasser (1/2/1) / Acyclic Ligands with Fixed Coordination Geometry, I 1:2 Complexes of Cobalt(II) with the Anions of 2,2′-Dihyydroxydiphenyloxide and -sulfide - Crystal and Molecular Structure of Sodium bis[diphenylsulfide-2,2′-diolato(2-)]cobaltate(II)- Acetone-Water (1/2/1)

1982 ◽  
Vol 37 (3) ◽  
pp. 341-347 ◽  
Author(s):  
Hartmut Müller ◽  
Arno Holzmann ◽  
Winfried Hinrichs ◽  
Günter Klar
Keyword(s):  
Molecular Structure ◽  
Crystal And Molecular Structure ◽  
Coordination Geometry ◽  
Normal Range ◽  
X Ray ◽  
Chelating Ligand ◽  
Acetone Water ◽  
Acyclic Ligands

The synthesis of bis[diphenylchalcogenide-2,2′-diolate(2-)]-cobaltate(II) compounds is described. In these complexes diphenyloxide-2,2′-diolate acts as a bidentate, diphenylsulfide- 2,2′-diolate as a tridentate chelating ligand leading to tetrahedral or octahedral coordinated cobalt(II), resp. An X-ray analysis of sodium bis[diphenylsulfide-2,2′-diolate(2-)]cobaltate(II)-acetonewater (1/2/1) shows the ligands to occupy fac-, their sulfur atoms cis-positions. The Co-0 distances (average 204.5 pm) are in the normal range while the C-S distances (average 248.5 pm) are longer than usually found indicating weaker bonds to sulfur than to oxygen.

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