ChemInform Abstract: Pseudo-Tetrahedral Coordination Compounds of Cobalt, Zinc, Nickel and Iron Halides with 3(5)-Methyl-5(3)-phenylpyrazole. The Crystal and Molecular Structures of Dichlorobis(3-methyl-5-phenylpyrazole)cobalt(II) and Dibromobis(3-methyl-

ChemInform ◽  
1990 ◽  
Vol 21 (5) ◽  
Author(s):  
P. D. VERWEIJ ◽  
F. J. RIETMEIJER ◽  
R. A. G. DE GRAAFF ◽  
A. ERDONMEZ ◽  
J. REEDIJK
Keyword(s):  
Coordination Compounds ◽  
Molecular Structures ◽  
Tetrahedral Coordination ◽  
Crystal And Molecular Structures ◽  
Zinc Nickel

Isopoly- und Heteropoly-Thioanionen. Kristall- und Molekülstrukturen von (PPh4)2[(WS4)WS(WS4)],CS2[(WS4)WO(WS4)H2O]·2H2O und (AsPh4)2[(WS4)Ni(WS4)]/Isopoly- and Heteropoly-Thioanions. Crystal and Molecular Structures of (PPh4)2[(WS4)WS(WS4)], Cs2[(WS4)WO(WS4)H2O] · 2 H2O and (AsPh4)2[(WS4)Ni(WS4)]

1982 ◽  
Vol 37 (8) ◽  
pp. 1014-1019 ◽  
Author(s):  
Achim Müller ◽  
Hartmut Bögge ◽  
Erich Krickemeyer ◽  
Gerald Henkel ◽  
Bernt Krebs
Keyword(s):  
Transition Metal ◽  
Coordination Compounds ◽  
Molecular Structures ◽  
Crystal And Molecular Structures

The crystal and molecular structures of (PPh4)2[(WS4)WS(WS4)] (1a) and CS2[(WS4)WO(WS4)H2O] · 2 H2O (2a), which contain the first reported isopoly-thioanion of a transition metal have been determined: 1a: (P1̅, a = 913.0(1), b = 1060.1(2), c = 1333.9(2) pm, α = 87.11(1), β = 85.18(1), γ = 83.07(1)°, V = 1277.6 · 106 pm3, Z = 1); 2a: (P21/n, a = 671.6(2), b = 2018.5(4), c = 714.4(2) pm, β = 101.42(2)°, V = 949,3 · 106 pm3, Z = 2) and compared with that of the trimetallic heteropoly-thioanion of(AsPh4)2[(WS4)Ni(WS4)] (3a). 3a: (P1̄, a = 1255.2(3), b = 1277.1(3), c = 939.0(2) pm, α = 113.19(2), β = 96.28(2), γ = 108.72(2)°, V = 1261.5 · 106 pm3, Z = 1). Though there are delocalized orbitals in the isopoly-thioanions they can be regarded as coordination compounds of WIVX2+ containing two WVIS42- ligands.

scholarly journals Crystal and molecular structures of two silver(I) amidinates, including an unexpected co-crystal with a lithium amidinate

2016 ◽  
Vol 72 (12) ◽  
pp. 1786-1790 ◽  
Author(s):  
Sida Wang ◽  
Nicole Harmgarth ◽  
Phil Liebing ◽  
Frank T. Edelmann
Keyword(s):  
Triple Bond ◽  
Crystalline State ◽  
Molecular Structures ◽  
Tetrahedral Coordination ◽  
Crystal And Molecular Structures ◽  
Dimeric Structure ◽  
Metal Atoms ◽  
Centrosymmetric Dimers ◽  
Distorted Tetrahedral Coordination ◽  
Linear Coordination

The silver(I) amidinates bis[μ-N1,N2-bis(propan-2-yl)benzamidinato-κ2N1:N2]disilver(I), [Ag2(C13H19N2)2] or [Ag{PhC(NiPr)2}]2(1), and bis(μ-N1,N2-dicyclohexyl-3-cyclopropylpropynamidinato-κ2N1:N2)disilver(I), [Ag2(C18H27N2)2] or [Ag{cyclo-C3H5–C[triple-bond]C–C(NCy)2}]2(2a), exist as centrosymmetric dimers with a planar Ag2N4C2ring and a common linear coordination of the metal atoms in the crystalline state. Moiety2aforms a co-crystal with the related lithium amidinate, namely bis(μ-N1,N2-dicyclohexyl-3-cyclopropylpropynamidinato-κ2N1:N2)disilver(I) bis(μ-N1,N2-dicyclohexyl-3-cyclopropylpropynamidinato-κ3N1,N2:N1)bis(tetrahydrofuran-κO)lithium(I) toluene monosolvate, [Ag2(C18H27N2)2][Li2(C18H27N2)2(C4H8O)2]·C7H8or [Ag{cyclo-C3H5–C[triple-bond]C–C(NCy)2}]2[Li{cyclo-C3H5–C[triple-bond]C–C(NCy)2}(THF)]2·C7H8, composed as2a×2b× toluene. The lithium moiety2bfeatures a typical ladder-type dimeric structure with a distorted tetrahedral coordination of the metal atoms. In the silver(I) derivatives1and2a, the amidinate ligand adopts a μ-κN:κN′ coordination, while it is a μ-κN:κN:κN′-coordination in the case of lithium derivative2b.

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