TY - JOUR
T1 - Structure of a Cs(18-crown-6)N(CN)2·H2O Complex
T2 - Assembly of the Dimeric 2:2 Anion Paired Encapsulate by Means of μ2-Bridging Water Molecules
AU - Rusanova, Julia A.
AU - Squattrito, Philip J.
AU - Domasevitch, Konstantin V.
AU - Kokozay, Volodimir N.
N1 - Funding Information:
We would like to thank to Maria Angeles Busturia, Yeray Duque, Ascensión Valle and Eunate Arana for their clinical and technical help and thanks to Julia G Fenn (INC team) and Alejandro Urberuaga for their English translation. The study was financially supported by the Department of Health and Department of Education of the Government of the Basque Country (research grant: 200211011 , IT-472-07 ), Fundación Salud 2000 , Grant number 23301 and Fundación IKERTU . We extend our gratitude to the Sociedad Española de Endocrinología Pediátrica for the award “José Igea 2002” funded by Pfizer . Finally, we want to thank the children and their parents for their continued participation and involvement in this research.
PY - 1999/3
Y1 - 1999/3
N2 - The new macrocyclic complex of composition Cs(18-crown-6)N(CN)2·H2O has been prepared and characterized by X-ray crystallography (monoclinic, space group P21/n, with a = 11.218(3), b = 8.563(7), c = 21.704(2) Å; β = 92.66(1)°, V = 2083(2) Å3, Z = 4; final R = 0.034 and Rw = 0.038 for 2529 independent reflections with I > 3σ(I)). The complex adopts a molecular dimeric array [Cs(18c6)(μ2-H2O){N(CN)2}]2(2:2 anion-paired encapsulate). The dimerization of Cs(18c6)+ moieties takes place surprisingly not via the nitrilic nitrogen atoms, but via the water molecules (Cs-O 3.139(5), 3.334(5) Å), which is an unprecedented example in the chemistry of M(18c6)+ complexes. The caesium atom adopts nine-fold coordination (Cs-O (ether) 3.099(5) - 3.280(5) Å). One cyano group of the counter anion completes the coordination environment of the caesium atom (Cs-N 3.420(8) Å), while the second one is involved in hydrogen bonding.
AB - The new macrocyclic complex of composition Cs(18-crown-6)N(CN)2·H2O has been prepared and characterized by X-ray crystallography (monoclinic, space group P21/n, with a = 11.218(3), b = 8.563(7), c = 21.704(2) Å; β = 92.66(1)°, V = 2083(2) Å3, Z = 4; final R = 0.034 and Rw = 0.038 for 2529 independent reflections with I > 3σ(I)). The complex adopts a molecular dimeric array [Cs(18c6)(μ2-H2O){N(CN)2}]2(2:2 anion-paired encapsulate). The dimerization of Cs(18c6)+ moieties takes place surprisingly not via the nitrilic nitrogen atoms, but via the water molecules (Cs-O 3.139(5), 3.334(5) Å), which is an unprecedented example in the chemistry of M(18c6)+ complexes. The caesium atom adopts nine-fold coordination (Cs-O (ether) 3.099(5) - 3.280(5) Å). One cyano group of the counter anion completes the coordination environment of the caesium atom (Cs-N 3.420(8) Å), while the second one is involved in hydrogen bonding.
KW - 18-Crown-6
KW - Caesium Macrocyclic Complexes
KW - Crystal Structure
KW - Dicyanamide
UR - http://www.scopus.com/inward/record.url?scp=0038279670&partnerID=8YFLogxK
U2 - 10.1515/znb-1999-0317
DO - 10.1515/znb-1999-0317
M3 - Article
AN - SCOPUS:0038279670
SN - 0932-0776
VL - 54
SP - 389
EP - 393
JO - Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences
JF - Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences
IS - 3
ER -