scholarly journals Crystal and molecular structure of the binuclear Rh(I) complex (μ-Cl)(μ-pz) [Rh(CO)2]2 (pz = pyrazolyl, N2C3H3). An example of molecular stacking via weak intermolecular interactions

1985 ◽  
Vol 63 (3) ◽  
pp. 688-691 ◽  
Author(s):  
Brenda M. Louie ◽  
Steven J. Rettig ◽  
Alan Storr ◽  
James Trotter
Keyword(s):  
Molecular Structure ◽  
Transition Metal ◽  
Metal Complex ◽  
Physical Properties ◽  
Transition Metal Complex ◽  
Crystal And Molecular Structure ◽  
Heavy Atom ◽  
Full Matrix ◽  
Weak Intermolecular Interactions ◽  
Molecular Stacking

Details of the synthesis and physical properties of (μ-Cl)(μ-pz)[Rh(CO)2]2 are given. Crystals of (μ-chloro) (μ-pyrazolyl)-bis(dicarbonylrhodiumd(I)) are monoclinic, a = 7.0970(8), b = 20.5184(10), c = 15.808(2) Å, β = 94.695(6)°, Z = 8, space group P21/c. The structure was solved by conventional heavy-atom methods and was refined by full-matrix least-squares procedures to R = 0.035 and Rw = 0.038 for 2949 reflections with I ≥ 3σ(I). The complex provides a rare example of molecular stacking in a binuclear transition metal complex with [Formula: see text] distances of 3.5107(8) and 3.6201(8) Å.

[4-tBu-2,6-{P(O)(OiPr)2}2C6H2Sn(PPh3)Cr(CO)5]ClO4 – a salt containing a cationic triphenylphosphane-stabilized organostannylene transition metal complex

2015 ◽  
Vol 38 (5-6) ◽  
Author(s):  
Michael Wagner ◽  
Thomas Zöller ◽  
Christina Dietz ◽  
Klaus Jurkschat
Keyword(s):  
Molecular Structure ◽  
Transition Metal ◽  
Metal Complex ◽  
Transition Metal Complex

AbstractThe isolation and molecular structure of bis(di-

Crystal and molecular structure of [dimethyl(1-pyrazolyl)(2-pyridyl-methoxy)gallato-N2,O,N3](η3-allyl)dicarbonylinolybdenum(II)

1988 ◽  
Vol 66 (3) ◽  
pp. 355-358 ◽  
Author(s):  
Steven J. Rettig ◽  
Alan Storr ◽  
James Trotter
Keyword(s):  
Molecular Structure ◽  
Nitrogen Atom ◽  
Least Squares ◽  
Crystal And Molecular Structure ◽  
Heavy Atom ◽  
Coordination Geometry ◽  
Pyridyl Nitrogen ◽  
Full Matrix ◽  
Space Group ◽  
Bond Lengths

Crystals of [dimethyl(1-pyrazolyl)(2-pyridylmethoxy)gallato-N2,O,N3](η3-allyl)dicarbonylmolybdenum(II) are triclinic, a = 9.632(2), b = 9.798(2), c = 10.255(2) Å, α = 80.16(1), β = 87.38(1), γ = 81.75(1)°, Z = 2, space group [Formula: see text]. The structure was solved by conventional heavy-atom methods and was refined by full-matrix least-squares procedures to R = 0.033 and Rw = 0.037 for 3000 reflections with I ≥ 3σ(I). The molecule has pseudo-octahedral coordination geometry with the tridentate [Me2Ga(N2C3H3)(OCH2(C5H4N))]− ligand facially coordinated and the η3-allyl ligand occupying one coordination site trans to the pyridyl nitrogen atom. Important bond lengths are Mo—O = 2.219(2), Mo—N(py) = 2.212(3), Mo—N(pz) = 2.232(2), Mo—C(allyl) = 2.290(4), 2.189(4), 2.341(4), Mo—CO (trans to O) = 1.928(4), and Mo—CO (trans to N) = 1.952(4) Å.

Structural studies of organoboron compounds. XXII. Preparation and crystal and molecular structure of tetramethylammonium-2,4,6,6-tetraphenyl-1,3,5-trioxa-2,4- dibora-6-boratacyclohexane

1985 ◽  
Vol 63 (12) ◽  
pp. 3516-3520 ◽  
Author(s):  
W. Kliegel ◽  
H.-W. Motzkus ◽  
Steven J. Rettig ◽  
James Trotter
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Physical Properties ◽  
Crystal And Molecular Structure ◽  
Structural Parameters ◽  
Direct Methods ◽  
Maximum Deviation ◽  
Structural Studies ◽  
Full Matrix ◽  
The Mean

Details of the preparation and physical properties of (Me4N)+ (Ph4B3O3)− are given. Crystals of tetramethylammonium 2,4,6,6-tetraphenyl-1,3,5-trioxa-2,4-dibora-6-boratacyclohexane are orthorhombic, a = 18.130(2), b = 11.9745(7), c = 12.5187(5) Å, Z = 4, space group Pna21. The structure was solved by direct methods and was refined by full-matrix least-squares procedures to R = 0.056 and Rw = 0.064 for 1460 reflections with I ≥ 2σ(I). The crystal structure consists of discrete tetramethylammonium cations and tetraphenylboroxinate anions, the first such anion to be structurally characterized. The six-membered B3O3 ring is significantly non-planar, having a flattened O(1)-envelope conformation (maximum deviation from the mean plane = 0.074(4) Å for O(1)). The boroxine ring in the anion shows significant deviations from the D3h symmetry observed for neutral boroxines. Important mean structural parameters: B(sp3)—O = 1.494(2), B(sp2)—O[B(sp3)] = 1.320(9), B(sp2)—O[B(sp2)] = 1.389(3) Å, O—B(sp3)—O = 110.5(5), O—B(sp2)—O = 121.7(6), B(sp2)—O—B(sp2) = 118.9(5), and B(sp3)—O—B(sp2) = 122.9(1)°.

Sign in / Sign up

Export Citation Format

Share Document