1979
DOI: 10.1002/zaac.19794570122
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Darstellung sowie Kristall‐ und Molekülstruktur von [(C6H5)3PO]2 · H2O · HBr

Abstract: [(C6H5)3PO]2 · H2O · HBr wurde aus 47% iger Bromwasserstoffsäure und (C6H5)3PO in Benzol dargestellt. Es kristallisiert in der monoklinen Raumgruppe P21/c mit a = 969,3(4), b = 1753,9(1), c = 1909,5(2) pm, β = 88,60(1)° und Z = 4; d(ber./gef.) = 1,34/1,34 g · cm−3. Die Struktur wurde anhand von 2 679 unabhängigen Reflexen direkt bestimmt und nach der Kleinste‐Quadrate‐Methode (volle Matrix) bis zu einem R‐Wert von 0,054 (Rw = 0,036) verfeinert. In der Verbindung sind zwei Moleküle (C6H5)3PO und ein HBr verzerr… Show more

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Cited by 11 publications
(9 citation statements)
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“…The observation of similar cluster isomers among octahedral cluster complexes is not unexpected. In particular, it was shown [17] that in the related complex [{Re 6 (1) Å for the two structurally nonequivalent dimers in the unit cell. Note that one of these distances is even less than the known limit (2.39 Å) usually associated with the formation of the symmetric O-H-O bond.…”
Section: Resultsmentioning
confidence: 99%
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“…The observation of similar cluster isomers among octahedral cluster complexes is not unexpected. In particular, it was shown [17] that in the related complex [{Re 6 (1) Å for the two structurally nonequivalent dimers in the unit cell. Note that one of these distances is even less than the known limit (2.39 Å) usually associated with the formation of the symmetric O-H-O bond.…”
Section: Resultsmentioning
confidence: 99%
“…Indeed, we succeeded in obtaining a similar complex (Figure 7). In [Re 6 S 2 (S 2/3 Br 1/3 ) 6 Br 6 ] 2-, four sulfur and two bromine atoms alternatively occupy six corners of a cube; in [Re 6 S 4 (S 1/2 Br 1/2 ) 4 Br 6 ] 2-, two sulfur and two bromine atoms are distributed over four positions. The interatomic distances for both isomers are summarized in Table 3.…”
Section: Resultsmentioning
confidence: 99%
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“…The corresponding triphenyl substituted phosphonium cation was studied crystallographically with different formal counter ions, like for e.g. F − , [4], Cl − [5], Br − [6], H 2 O*Br − [7]. For X = F the best description is formula 1 , which can be attributed to the strong H–F bond.…”
Section: Introductionmentioning
confidence: 99%
“…Triphenylphosphinoxid (Ph,PO) bildet mit Protonendonatoren H-verbruckte Addukte, in denen H-Briicken sehr unterschiedlicher Lange auftreten. Durch Rontgenstrukturanalysen wurden in derartigen Komplexen die folgenden Typen von Wasserstoffbriicken nachgewiesen : a) sehr kurze symmetrische H-Briicken in den ionischen Komplexen [Ph3PO...H...0PPh3]@Ae [2-41; b) [7], [S-lo], Phenolen bzw. Alkoholen (261-269 pm) 9 pm) [I41 und Wasser (274,4/285,3 pm) [Ill. 0 Unseres Wissens wurde noch kein Ph,PO-Addukt mit einem NH-aciden Protonendonator strukturell untersucht.…”
Section: Introductionunclassified