The crystal structure of potassium trichloro(2,6-lutidine)platinum(II)

1976 ◽  
Vol 54 (6) ◽  
pp. 1002-1006 ◽  
Author(s):  
R. Melanson ◽  
F. D. Rochon
Keyword(s):  
Crystal Structure ◽  
Complex Salt ◽  
Platinum Atom ◽  
Potassium Ions ◽  
Distorted Tetrahedron ◽  
X Ray Diffraction ◽  
Full Matrix ◽  
X Ray ◽  
Salt Forms ◽  
Coordination Plane

The molecular and crystal structure of potassium trichloro(2,6-lutidine)platinum(II) has been determined by X-ray diffraction. The complex salt forms monoclinic crystals, a = 6.941, b = 24.301, c = 11.168 Å, β = 141.58°, Z = 4, and space group P21/c. Positional and anisotropic thermal parameters were refined by full matrix least squares calculations to R = 0.038 and Rw = 0.034.The coordination around the platinum atom is planar. The Pt—Cl bond lengths are 2.301, 2.299, and 2.302 Å and the Pt—N bond length is 2.011 Å. The 2,6-lutidine ring lies almost perpendicular to the coordination plane of the platinum atom (81.6°). The PtCl3 moieties are packed around the potassium ions, which are surrounded by four chlorine atoms at distances smaller than 3.15 Å forming a distorted tetrahedron.

The molecular and crystal structure of [Pt(diethylenetriamine)(guanosine)](ClO4)2

1979 ◽  
Vol 57 (1) ◽  
pp. 57-61 ◽  
Author(s):  
R. Melanson ◽  
F. D. Rochon
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Least Squares ◽  
Platinum Atom ◽  
X Ray Diffraction ◽  
Orthorhombic Space Group ◽  
X Ray ◽  
R Factor ◽  
Square Planar ◽  
Coordination Plane

The crystal structure of [Pt(diethylenetriamine)(guanosine)](ClO4)2 has been determined by X-ray diffraction. The crystals are orthorhombic, space group P212121, with a = 12.486(6), b = 13.444(7), c = 14.678(11) Å, and Z = 4. The structure was refined by block-diagonal least-squares analysis to a conventional R factor of 0.050 and a weighted Rw = 0.045.The coordination around the platinum atom is square planar. Guanosine is bonded to platinum through N(7). The purine planar ring makes an angle of 62.7° with the platinum coordination plane. The structure is stabilized by hydrogen bonding.

scholarly journals The Crystal Structure of the [Pt(diethylenetriamine)Br]Br Complex

1975 ◽  
Vol 53 (8) ◽  
pp. 1139-1143 ◽  
Author(s):  
Robert Melanson ◽  
Joseph Hubert ◽  
F. D. Rochon
Keyword(s):  
Crystal Structure ◽  
Least Squares ◽  
Thermal Parameters ◽  
Platinum Atom ◽  
Molecular And Crystal Structure ◽  
X Ray Diffraction ◽  
Full Matrix ◽  
Space Group ◽  
X Ray ◽  
Cell Parameters

The molecular and crystal structure of the [Pt(dien)Br]Br complex (dien = diethylenetriamine) has been studied by X-ray diffraction. The compound belongs to the orthorhombic Pca21 space group and the cell parameters are: a = 14.211, b = 4.940, c = 13.450 Å, and Z = 4. The refinement of the positional and anisotropic thermal parameters, carried out by full matrix least squares calculations, converged to R = 0.039 and Rw = 0.036.The coordination around the platinum atom is planar. The crystal consists of alternate layers of [Pt(dien)Br]+ cations and Br− ions parallel to the ac plane.

scholarly journals The Crystal Structure of cis-Dichlorobis(dimethylsulfoxide)platinum(II)

1975 ◽  
Vol 53 (16) ◽  
pp. 2371-2374 ◽  
Author(s):  
Robert Melanson ◽  
Fernande D. Rochon
Keyword(s):  
Crystal Structure ◽  
Least Squares ◽  
Thermal Parameters ◽  
Platinum Atom ◽  
Molecular And Crystal Structure ◽  
X Ray Diffraction ◽  
Full Matrix ◽  
Space Group ◽  
X Ray ◽  
Cell Parameters

The molecular and crystal structure of cis-dichlorobis (dimethylsulfoxide) platinum(II), cis-[PtCl2(DMSO)2], has been studied by X-ray diffraction. The compound belongs to the mono-clinic P21/c space group and the cell parameters are: a = 8.653, b = 13.580, c = 10.914 Å, β = 123.43°, and Z = 4. The refinement of the positional and anisotropic thermal parameters, carried out by full matrix least-squares calculations, converged to R = 0.029 and Rw = 0.027.The coordination around the platinum atom is planar. As expected, the DMSO molecules are bonded to the platinum atom through sulfur. The bond distances found are: Pt—Cl = 2.306, 2.312 Å; Pt—S = 2.244, 2.229 Å; S—O = 1.469, 1.454 Å, and S—C = 1.77 to 1.79 Å. The crystal consists of layers of molecules parallel to the ac plane.

Crystal structure of Tetracyclo[5,3,1,12,6,04,9]dodecane (iceane)

1977 ◽  
Vol 30 (8) ◽  
pp. 1837 ◽  
Author(s):  
DPG Hamon ◽  
CL Raston ◽  
GF Taylor ◽  
JN Varghese ◽  
AH White
Keyword(s):  
Crystal Structure ◽  
Rigid Body ◽  
Least Squares ◽  
Title Compound ◽  
Molecular Geometry ◽  
Thermal Motion ◽  
X Ray Diffraction ◽  
Full Matrix ◽  
X Ray ◽  
Hexagonal Close Packed

The crystal structure of the title compound, C12H18, has been determined at 295 K by X-ray diffraction and refined by full-matrix least squares to a residual of 0.049 for 216 ?observed? reflections; molecular geometry has been corrected for the effects of thermal motion using a rigid body approximation. Crystals are hexagonal, P63/m, a = 6.582(1), c = 11.843(3) Ǻ, Z = 2, the molecules occupying a hexagonal close- packed array.

Structure, Stereochemistry and Novel 'Hydrogen Bonding' in Two Bipyridinium Salts of the B10H102- Anion

1987 ◽  
Vol 40 (12) ◽  
pp. 2097 ◽  
Author(s):  
DJ Fuller ◽  
DL Kepert ◽  
BW Skelton ◽  
AH White
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Charge Transfer ◽  
Single Crystal ◽  
X Ray Diffraction ◽  
Hydrogen Atoms ◽  
Full Matrix ◽  
X Ray ◽  
Structure Determinations ◽  
Positively Charged

Crystal structure determinations of (LH)2(B10H10), (1), and (LH2)(B10H10), (2), L = 2,2'- bipyridine , have been carried out by single-crystal X-ray diffraction methods at 295 K, being refined by full-matrix least squares to residuals of 0.041, 0.047 for 1758, 1771 'observed' independent reflections respectively. Crystals of (1) are monoclinic, P21/n, a 12.040(7), b 17.71(1), c 11.142(4) �, β 101.78(4)�, Z 4. Crystals of (2) are monoclinic, P21/c, a 9.937(4), b 10.837(3), c 14.856(5) �, β 109 2l(3)�, Z 4. The colour of the compounds is accounted for by charge-transfer interactions of a novel type, namely between the positively charged cationic acid hydrogen atoms and the negatively charged non-apical hydrogen atoms of the anion. In yellow (1), these distances are 2.26(5) �, while in red (2), they are much shorter, being 1.89(4), 1.97(3) �.

Tetramethyld-η2-vinyldisiloxan(triphenylphosphan)platin(0) / Tetramethyldi-η2-vinyldisiloxane(triphenylphosphine)platinum(0)

1991 ◽  
Vol 46 (12) ◽  
pp. 1694-1698 ◽  
Author(s):  
Georg Beuter ◽  
Olga Heyke ◽  
Ingo-Peter Lorenz
Keyword(s):  
Crystal Structure ◽  
Chair Conformation ◽  
Ring System ◽  
Platinum Atom ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray

The reaction of (Ph3P)2PtC2H4 with the divinyldisiloxane (CH2=CHSiMe2)2O in toluene yields Pt{(η2-H2C=CHSiMe2)2O}PPh3, which has been characterized by IR, 1H, 13C, 31P NMR and MS spectra. The crystal structure was determined by X-ray diffraction: space group C2/c, Z = 16, a = 5534.2(9), b = 842.6(2), c = 2383.1(2) pm, β = 103.73(1)°, R/Rw = 0.047/0.052. It shows a three-coordinate platinum atom with one phosphine and one sym-tetramethyldivinyldisiloxane ligand acting as a chelating bidentate η/2-ligand to give a chair conformation of the six-membered PtC2Si2O-ring system.

The Crystal Structure of cis-Dichloro(2,2′-oxydi-3-butene)platinum(II), PtCl2((CH2=CH—CH(CH3))2O)

1973 ◽  
Vol 51 (4) ◽  
pp. 604-608 ◽  
Author(s):  
J. Hubert ◽  
A. L. Beauchamp ◽  
T. Theophanides
Keyword(s):  
Crystal Structure ◽  
Least Squares ◽  
Platinum Atom ◽  
Double Bonds ◽  
Triclinic Space Group ◽  
Standard Methods ◽  
Full Matrix ◽  
R Factor ◽  
Square Planar ◽  
Coordination Plane

The reaction of K2PtCl4 with CH3—CH=CH—CH2—OH yields the complex cis-[PtCl2((CH2=CH—CH(CH3))2O)]. The crystals are triclinic, space group [Formula: see text], a = 9.420(2) Å, b = 8.359(4) Å, c = 7.837(4) Å, α = 91.10(4)°, β = 62.13(4)°, γ = 80.80(5)°, and Z = 2. The structure, solved by standard methods, has been refined anisotropically by full matrix least-squares methods to a R factor of 0.052 by use of 2441 independent observed reflections. The complex is a monomer, where both double bonds of the diolefin ether are coordinated to the platinum atom as in Zeise's salt. The usual square planar coordination of platinum(II) is completed by two chlorine atoms. The (=CH2) groups of both double bonds are found on the same side of the coordination plane. Various possible conformations of the coordinated ligand in the complex are discussed.

Röntgenstrukturbestimmung von AlCl3-Pyridin-Addukten: Der strukturelle Aufbau im trans-Dichlorotetrakis(pyridin)aluminium(III)- Tetrachloroaluminat(III) und im Trichlorotris(pyridin)aluminium(III) / X-ray Diffraction Study of AICl3-Pyridine Adducts: The Crystal Structure of trans-Dichlorotetrakis(pyridine)aluminium(III)tetrachloroaluminat(III) and of Trichlorotris(pyridine)aluminium(III)

1982 ◽  
Vol 37 (10) ◽  
pp. 1312-1315 ◽  
Author(s):  
Peter Pullmann ◽  
Karl Hensen ◽  
Jan W. Bats
Keyword(s):  
Crystal Structure ◽  
Least Squares ◽  
Diffraction Study ◽  
X Ray Diffraction ◽  
Full Matrix ◽  
X Ray ◽  
The Mean

Abstract Crystals of [Al(C5H5N)4Cl2][AlCl4] are orthorhombic, Pna21, Z = 4, a = 18.522(7), b = 15.141(5), c = 9.593(3) Å, V = 2690(2) Å3 , Dc = 1.440 g/cm3 . The structure has been solved from 5968 diffractometer measured intensities and refined by full-matrix least squares to Rw(F) = 0.032. The crystal structure shows the complex to be trans-dichloro-tetrakis(pyridine)aluminium(III) tetrachloroaluminat(III). The mean trans Al-Cl-and trans Al-N-distances in the octahedron are 2.279(3) and 2.070(4) Å, respectively. Crystals of Al(C5H5N)3Cl3 are monoclinic, P21/c, Z = 4, a = 7.261(2), b = 29.961(4), c = 8.624(1) Å, β = 98.12(2)°, V -1857(1) Å3 , DC = 1.326 g/cm3 . The structure has been solved from 4707 diffractometer measured intensities and refined to Rw(F) = 0.028. The crystal structure shows octahedral complexes AlCl3·3 (C5H5N) with trans geometry. The Al-N-distance trans to chlorine (2.096(2) Å) is significantly longer than the two other Al-N-distances (mean 2.072(2) Å).

scholarly journals Synthesis, Characterization, and Crystal Structure of Negundoside (2′-p-Hydroxybenzoyl Mussaenosidic Acid)

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Suresh Sharma ◽  
B. D. Gupta ◽  
Rajni Kant ◽  
Vivek K. Gupta
Keyword(s):  
Crystal Structure ◽  
Room Temperature ◽  
Direct Method ◽  
Monoclinic Crystal System ◽  
X Ray Diffraction ◽  
Unit Cell Parameters ◽  
Monoclinic Crystal ◽  
Full Matrix ◽  
X Ray ◽  
Cell Parameters

The structure of title compound Negundoside (2′-p-hydroxybenzoyl mussaenosidic acid) was established by spectral and X-ray diffraction studies. The compound crystallizes in the monoclinic crystal system with space group P21 having unit cell parameters: a=11.6201 (5) Å, b=9.2500 (4) Å, c=12.2516 (5) Å, β=97.793 (4)°, and Z=2. The crystal structure was solved by direct method using single crystal X-ray diffraction data collected at room temperature and refined by full-matrix least-squares procedures to a final R value of 0.0520 for 3389 observed reflections.

A diethylhydroxylaminate based mixed lithium/beryllium aggregate

2015 ◽  
Vol 70 (4) ◽  
pp. 279-282 ◽  
Author(s):  
Raphael J.F. Berger ◽  
Surajit Jana ◽  
Roland Fröhlich ◽  
Norbert W. Mitzel
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
State Structure ◽  
Distorted Tetrahedron ◽  
X Ray Diffraction ◽  
Butyl Lithium ◽  
X Ray ◽  
Weak Intermolecular Interactions ◽  
Nitrogen Donor ◽  
Structural Details

AbstractA mixed lithium/beryllium diethylhydroxylaminate compound containing nbutyl beryllium units of total molecular composition nBe(ONEt2)2 [(LiONEt2)2nBuBeONEt2]2 (1) was isolated from a reaction mixture of nbutyl lithium, N,N-diethylhydroxylamine and BeCl2 in diethylether/thf. The crystal structure of 1 has been determined by X-ray diffraction. The aggregate is composed of two ladder-type subunits connected in a beryllium-centered distorted tetrahedron of four oxygen atoms. Only the lithium atoms are engaged in coordination with the nitrogen donor atoms. The DFT calculations support the positional occupation determined for Li and Be in the crystal structure. The DFT and the solid-state structure are in excellent agreement, indicating only weak intermolecular interactions in the solid state. Structural details of metal atom coordination are discussed.

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