Neutron diffraction study of the structure of Zeise's salt, KPtCl3(C2H4).H2O

Love, Richard A.; Koetzle, Thomas F.; Williams, G. J. B.; Andrews, Larry C.; Bau, Robert

doi:10.1021/ic50153a012

Cited by 196 publications

(126 citation statements)

References 8 publications

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“…This geometry is found in a number of nine-coordinate species (Cotton & Wilkinson, 1972). The K...O distances compare well with those found in carboxylates (Wyckoff, 1969) and in hydrated compounds such as Zeise's salt (Love, Koetzle, Williams, Andrews & Bau, 1975). The K-Br contacts are in the normal range (Bokii & Kukina, 1965), but it is noteworthy that the interaction with the bridging Br atom is particularly short [3.27 (2) A]; this value corresponds to the sum of the radii of K ÷ and Br- (Cotton & Wilkinson, 1972).…”

Section: ½+Y ½-Zsupporting

confidence: 75%

Structure of the mixed-valence compound dipotassium tribromo(pyridine)platinate(II) pentabromo(pyridine)platinate(IV) dihydrate

Beauchamp¹,

Layek²,

Théophanides³

1982

Acta Crystallogr Sect B

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Section: ½+Y ½-Zsupporting

confidence: 75%

Structure of the mixed-valence compound dipotassium tribromo(pyridine)platinate(II) pentabromo(pyridine)platinate(IV) dihydrate

Beauchamp¹,

Layek²,

Théophanides³

1982

Acta Crystallogr Sect B

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“…The double bond slightly deviates (7°) from the direction perpendicular to the coordination plane. Bond lengths of the trichloroplatinate(II) moiety compare well with those in known Ptalkene complexes [2][3][4][5][6]. Thus, adistance of 2.025 Å between the metal atom and the center of the C6-C7 bond is found.…”

Section: Discussionsupporting

confidence: 60%

Crystal structure of Ƞ2-1-allyl-3-methylimidazolium trichloroplatinate( II), [C7H11N2][PtCl3]

Bentivoglio¹,

Wurst²,

Laus³

et al. 2008

Zeitschrift Für Kristallographie - New Crystal Structures

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C 7 H 11 Cl 3 N 2 Pt, orthorhombic, P2 1 2 1 2 1 (no. 19), a =7.6873(2) Å, b =11.9159(3) Å, c =12.1398(3) Å, Source of materialPotassium h 2 -ethylene trichloroplatinate(II) hydrate (Zeise's salt) [CARN: 123334-22-5] was stirred with an equimolar amount of 1-allyl-3-methylimidazolium BF 4 [CARN: 851606-63-8] [1] for three days at room temperature. The precipitate was collected by filtration, washed with water, and redissolved in DMF. Yellow crystals of the zwitterionic title compound, suitable for X-ray diffraction, were obtained from this solution by diffusion with diethyl ether at −20°C. Experimental detailsConsidering the slight distortion due to the metal coordination, hydrogen atoms at C6 and C7 were not added geometrically, but were found and refined with bond restraints (d =0.93 Å). DiscussionThe platinum(II) atom is four-coordinated with asquare-planar configuration, the center of the C=C bond being one of the vertices. The double bond slightly deviates (7°) from the direction perpendicular to the coordination plane. Bond lengths of the trichloroplatinate(II) moiety compare well with those in known Ptalkene complexes [2][3][4][5][6]. Thus, adistance of 2.025 Å between the metal atom and the center of the C6-C7 bond is found. The C5-C6 bond is rotated out of the imidazolium ring plane by 75.0°, and the N2−C5−C6−C7 torsion angle is −148.3°. Several weak C−H···Cl contacts are observed (H···acceptor distance, donor···acceptor distance, donor−H···acceptor angle): C1−H···Cl2

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“…(1) 1.096 (7) 1.131(12) C(1) H (2) 1.087 (7) 1.112 (12) C (2) (6) 103.6(6) 100.9(9) Pt-Cl(2) H (5) 103.6(2) 100.4(4) Pt-Cl(3) H (6) 102.5(2) 102.1 (3) For the lighter atom positions, carbon and oxygen, the standard uncertainties are comparable to those extracted from original SCXD data [100,101] while, naturally, for hydrogen the NPD values are much superior; the CH and OH bond lengths are determined with a precision of ± 0.01 Å. Such data allow observation of the structural trends found previously [102], including the non-planar geometry of the C2H4…”

Section: Organometallicssupporting

confidence: 54%

Neutron powder diffraction – new opportunities in hydrogen location in molecular and materials structure

Wilson¹,

Henry²,

Schmidtmann³

et al. 2014

Crystallography Reviews

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The potential of neutron powder diffraction in the location of hydrogen atoms in molecular materials and inorganic-molecular complexes is reviewed. Advances in instrumentation and data collection techniques that have made this field accessible are reviewed, along with a wide range of applications carried out by our collaboration investigating functional materials, hydrogen-containing minerals and molecular compounds. Some of the limitations in this area, particularly for molecular systems, are also addressed. IntroductionHydrogen is a key element whose functionality in inorganic material systems stretches from geochemical materials (e.g. clay minerals, cements), through key inorganic compounds (e.g. catalysts, co-ordination complexes and hydroxides/hydrates) and materials (e.g. polymers, hydrogen storage media, proton conductors/fuel cell components) to supramolecular and framework systems (e.g aluminosilicates, solvates and clathrates). The role of hydrogen in the structures (and hence derived applications) of these materials is thus of the utmost importance but one that, until recently, experimental methods generally failed to address, or could only do so in selected cases at great expense and considerable effort.Determination of the position of hydrogen in a material, whether it be a naturally occurring hydrate/hydroxide, a cement, a hydride/hydrogen storage material, a solvate or an organometallic compound has traditionally been difficult, time-consuming, expensive and imprecise, even where possible. However, knowledge of the distribution of hydrogen is central to understanding behaviours such as polymorphism, hydrogen bonding and three-dimensional structure definition, proton diffusion 2 pathways and levels of uptake in hydrogen storage materials, physical properties ranging from ferroelectricity to the elastic properties of polymers, and reaction mechanisms. Therefore the implementation and application of methodology that allows routine hydrogen position definition from readily available material (i.e. small easily synthesised quantities and in polycrystalline/small single crystal (≤50µm) form)is both of widespread application and key importance.In the work described here, development of the application of powder neutron diffraction methods in an optimised fashion to such materials is shown to have the capability to reveal structural information in a range of hydrogen-containing materials. A range of recent studies will be summarized, to illustrate the potential of this new capability. The powerful complementary use of both X-ray and computational methods with neutron powder diffraction in these studies will also be highlighted. The aim in this Review is not to provide a detailed account of the different materials studied, but to highlight the power of the methods of approach we have been systematically developing to access more accurate and different chemistry. It draws on a range of examples from our own collaborative work, which has recently focused on this theme [1].In this review, we have deli...

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Neutron diffraction study of the structure of Zeise's salt, KPtCl3(C2H4).H2O

Cited by 196 publications

References 8 publications

Structure of the mixed-valence compound dipotassium tribromo(pyridine)platinate(II) pentabromo(pyridine)platinate(IV) dihydrate

Structure of the mixed-valence compound dipotassium tribromo(pyridine)platinate(II) pentabromo(pyridine)platinate(IV) dihydrate

Crystal structure of Ƞ2-1-allyl-3-methylimidazolium trichloroplatinate( II), [C7H11N2][PtCl3]

Neutron powder diffraction – new opportunities in hydrogen location in molecular and materials structure

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