1967
DOI: 10.1107/s0365110x6700372x
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The crystal structure of two modifications of tetraethylammonium triiodide, (C2H5)4NI3

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Cited by 63 publications
(24 citation statements)
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“…By contrast, the I-Br bond distances in CslBrz are 2.78 A and 2.62 A (Davies & Nunn, 1969). The bonding in these ions is well described by three-center four-electron bonds (Rundle, 1962), symmetrical or unsymmetrical according to whether the electrostatic potential due to the surrounding ions is the same or different at the two ends of the ion (see for example, Migchelsen & Vos, 1967). Table 3.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…By contrast, the I-Br bond distances in CslBrz are 2.78 A and 2.62 A (Davies & Nunn, 1969). The bonding in these ions is well described by three-center four-electron bonds (Rundle, 1962), symmetrical or unsymmetrical according to whether the electrostatic potential due to the surrounding ions is the same or different at the two ends of the ion (see for example, Migchelsen & Vos, 1967). Table 3.…”
Section: Discussionmentioning
confidence: 99%
“…Later, Cremer & Duncan (1932) proved by measurements of dissociation pressures that both hydrated and anhydrous versions of the compound exist. Although singlecrystal X-ray studies of compounds containing triiodide and dichloroiodide ions are numerous, for example, N(C2H~)413 (Migchelsen & Vos, 1967) and N(CHa)4ICIz (Visser & Vos, 1964), there has been only one reported investigation of the dibromoiodide ion, in CslBrz (Davies & Nunn, 1969), where the dibromoiodide ion is unsymmetrical. In the latter study as in all the bromine-and iodine-containing trihalides (Carpenter, 1966;Tasman & Boswijk, 1955;Breneman & Willett, 1969), weak multicenter bonding between the anions is the rule.…”
mentioning
confidence: 99%
“…Mit steigendem Iodgehalt nimmt der Schmelzpunkt in der Regel ab und die Zersetzlichkeit an der freien Luft zu, wobei schrittweise die absteigende Folge der Verbindungen bis zum einfachen Iodid durchlaufen wird. [10], (Me 4 N)I 5 [11], (Me 4 N)I 9 [12] und des Tetraethylammonium-Kations (Et 4 N)I 3 [13], (Et 4 N)I 7 [14] zu den schon fru È h und wiederholt mit Beugungsmethoden an Einkristallen strukturell untersuchten Substanzen, deren anionische Geometrie fu È r die vorliegende Zusammensetzung jeweils als beispielhaft gilt. Auûer diesen Tetraalkylammonium-Polyiodiden sind bisher nur noch die Verbindungen (n-Pr 4 N)I x mit x = 3, 5, 7 [15] und (n-Bu 4 N)I 3 [16] strukturell untersucht worden.…”
Section: Introductionunclassified
“…Brown & Nunn, 1966;Migchelsen & Vos, 1967;Runsink, Swen-Walstra & Migchelsen, 1972;Wiebenga & Kracht, 1969). Als Erg~,nzung zu den zahlreichen, bisher durchgeffihrten Kristallstrukturuntersuchungen an Verbindungen mit Trijodidionen scheint uns die vorliegende Kristallstrukturaufklfirung yon Dimethyl-[3-dimethylamino-2-aza-propen-(2)-yliden]-Ammoniumtrijodid unter anderem aus zwei Grtinden von Interesse:…”
Section: Introductionunclassified