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Die Kristallstrukturen von {Li 3 (12‐Krone‐4) 2 [HC(CN) 2 ] 3 }, {Na(15‐Krone‐5)‐[HC(CN) 2 ]} und {Na[N( n Bu) 4 ][HC(CN) 2 ] 2 · THF}
Author(s) -
Hiller Wolfgang,
Frey Stephanie,
Strähle Joachim,
Boche Gernot,
Zarges Wolfgang,
Harms Klaus,
Marsch Michael,
Wollert RenéA,
Dehnicke Kurt
Publication year - 1992
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19921250114
Subject(s) - chemistry , ion , crystallography , lithium (medication) , molecule , crystal structure , nitrogen , crown ether , sodium , inorganic chemistry , organic chemistry , medicine , endocrinology
The Crystal Structures of {Li 3 (12‐crown‐4) 2 [HC(CN) 2 ] 3 }, {Na(15‐crown‐5)[HC(CN) 2 ]}, and {NaN( n Bu) 4 [HC(CN) 2 ] 2 · THF} The preparation and the crystal structures of the title compounds 1 — 3 are described. 1 forms a polymeric chain structure, in which one of the lithium ions is linked by Li…NCC(H)CN… bridges. The remaining lithium ions form (12‐crown‐4)Li[NCC(H)CN] units, which are coordinated by one of the nitrogen atoms of the dicyanomethanide ions with the lithium ions of the chain. 2 forms an ion pair, in which the sodium ion is coordinated by the five oxygen atoms of the crown ether molecule and by one nitrogen atom of the dicyanomethanide ion. 3 has a threedimensional network, in which the sodium ions are coordinated in a distorted tetrahedral manner by the nitrogen atoms of the dicyanomethanide ions. In the cavities of the network the tetrabutylammonium ions and the THF molecules are found.