1988
DOI: 10.1139/v88-161
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Structural, spectroscopic, and electron paramagnetic resonance studies on two solid phases of bis-dipropylammonium tetrachlorocuprate(II) (DPACC)

Abstract: . Can. J. Chem. 66,963 (1988).Bis-dipropylarnrnonium tetrachlorocuprate(I1) exists in two known crystalline phase:. Below 330 K (P phase) the crystal is orthorhombic Pbca with cell constants (at 293(1) K) a = 13.029(2) A, b = 15.252(3) A, c = 20.997(2) A, V = 4175.5(9) A3.The crystal undergoes a phase transition at 330 K to the cx phase, which is monoclinic P 2 ) / n with cell constants (at 342(1) K) a = 13.277(4) A, b = 10.280(3) A, c = 16.362(13) A, P = 104.31(5)", V = 2164(2) A3. The P phase consists of dis… Show more

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Cited by 23 publications
(16 citation statements)
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“…This is most apparent in two compounds where the structures of both the hightemperature and low-temperature phases have been determined (Harlow, Wells, Watt & Simonsen, 1975;Bloomquist, Pressprich & Willett, 1988), where a decided decrease in the trans angle occurs simultaneously with the increase in apparent thermal motion. One case where this does not occur is in [(C3H7)zNHz]zCuC14 (Bond, Johnson & Willett, 1988). In this case, however, the major change involved in the phase transition is the onset of disorder in only one of the --C3H7 groups.…”
Section: Thermal Motion and Disordermentioning
confidence: 99%
“…This is most apparent in two compounds where the structures of both the hightemperature and low-temperature phases have been determined (Harlow, Wells, Watt & Simonsen, 1975;Bloomquist, Pressprich & Willett, 1988), where a decided decrease in the trans angle occurs simultaneously with the increase in apparent thermal motion. One case where this does not occur is in [(C3H7)zNHz]zCuC14 (Bond, Johnson & Willett, 1988). In this case, however, the major change involved in the phase transition is the onset of disorder in only one of the --C3H7 groups.…”
Section: Thermal Motion and Disordermentioning
confidence: 99%
“…the change of color upon pressure and temperature variation, respectively. 5,[7][8][9][10][11][12][13][14][15] Their piezochromism is explained by the tilting of the octahedra and reduction of the Jahn-Teller distortion by compressing the long Cu-Cl bond. 7,8 Thermochromism often involves the change in coordination geometry from (nearly) square-planar CuCl 4 2À at low temperature to a distorted tetrahedron at higher temperatures, due to the decreased strength of the hydrogen bonding.…”
Section: Introductionmentioning
confidence: 99%
“…This phenomena can also be found in the similar organic-inorganic salts of bis[cinchoninium tetrachlorocuprate(II)] trihydrate 13 and bis-dipropylammonium tetrachlorocuprate (II). 14 In the title compound, all of the bond lengths of Cu-Cl [2.2102(18)-2.2735(18) Å] are comparable to the similar organic-inorganic salts cited above.…”
mentioning
confidence: 54%