Untersuchungen über S-H …︁ S‐Wasserstoffbrücken Die Kristallstruktur der Diphenyldithiophosphinsäure bei 140 und 293 K
- 1 April 1981
- journal article
- research article
- Published by Wiley in Zeitschrift für anorganische und allgemeine Chemie
- Vol. 475 (4) , 143-155
- https://doi.org/10.1002/zaac.19814750417
Abstract
Die Kristallstruktur der Diphenyldithiophosphinsäure (C6H5)2P(S)SH wurde röntgenographisch bei tiefer Temperatur und Normaltemperatur aus Einkristalldiffraktometerdaten bestimmt und bis zu R‐Werten von 0,037 (140 K, (sin Θ)/λ < 0,81 Å−1) und 0,035 (293 K, (sin Θ)/λ < 0,64 Å−1) verfeinert. Die Verbindung kristallisiert in der monoklinen Raumgruppe P21/c mit den bei 140 K (in Klammern: 293 K) gemessenen Gitterkonstanten a = 9,824(3) (9,887), b = 10,061(3) (10,175), c = 14,342(4) (14,433) Å, β = 122,08(3) (121,73)° und V = 1201,1 (1234,9) Å3, Z ‐ 4. Im Kristall sind individuelle Moleküle über fast lineare SH…︁S‐Wasserstoffbrückenbindungen zu schraubenförmig gewundenen Ketten verknüpft. Bei 140 K beträgt der S…︁S‐Abstand innerhalb der Brücke 3,790(1) Å; die weiteren geometrischen Daten der Wasserstoffbrücke sind: d(SH): 1,25(2), d(S…︁H): 2,56(2), d(PS): 2,077(1), d(PS): 1,954(1) Å, ∢ (SH…︁S): 169,5(14), ∢ (PS…︁S): 98,87(2), ∢ (PS…︁S): 96,65(2)°.Investigations on Compounds Containing SH…︁S Hydrogen Bonds. Crystal Structure of Diphenyldithiophosphinic Acid at 140 and 293 KThe crystal structure of diphenyldithiophosphinic acid (C6H5)2P(S)SH was determined from X‐ray diffraction data collected at 140 and 293 K and was refined to R factors of 0.037 (140 K, (sin Θ)/λ < 0.81 Å−1) and 0.035 (293 K, (sin Θ)/λ < 0.64 Å−1) respectively. The compound crystallizes in the monoclinic space group P21/c with unit cell parameters at 140 K (in parentheses: at 293 K): a = 9.824(3) (9.887), b = 10.061(3) (10.175), c = 14.342(4) (14.433) Å, β = 122.08(3) (121.73)° and V = 1201.1 (1234.9) Å3, Z = 4. In the crystalline state individual molecules are linked together by nearly linear SH…︁S hydrogen bonds so that endless helical chains are formed. At 140 K the S…︁S distance within the hydrogen bond is 3.790(1) Å; the other distances and angles associated with the bridge are: d(SH): 1,25(2), d(S…︁H): 2,56(2), d(PS): 2,077(1), d(PS): 1.954(1) Å, ∢ (SH…︁S): 169.5(14), ∢ (PS…︁S): 98.87(2), ∢ (PS…︁S): 96.65(2)°.Keywords
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