ABSTRACT
The adoption of green technology is very important to protect the environment and thus there is a need for improving the existing methods for the fabrication of carbon materials. As such, this work proposes to discuss, interrogate, and propose viable hydrothermal, solvothermal, and other advanced carbon materials synthesis methods. The synthesis approaches for advanced carbon materials to be interrogated will include the synthesis of carbon dots, carbon nanotubes, nitrogen/titania-doped carbons, graphene quantum dots, and their nanocomposites with solid/polymeric/metal oxide supports. This will be performed with a particular focus on microwave-assisted solvothermal and hydrothermal synthesis due to their favourable properties such as rapidity, low cost, and being green/environmentally friendly. These methods are regarded as important for the current and future synthesis and modification of advanced carbon materials for application in energy, gas separation, sensing, and water treatment. Simultaneously, the work will take cognisance of methods reducing the fabrication costs and environmental impact while enhancing the properties as a direct result of the synthesis methods. As a direct result, the expectation is to impart a significant contribution to the scientific body of work regarding the improvement of the said fabrication methods.
ABSTRACT
The title compound, [Rh(C(5)H(7)O(2))(C(30)H(21)P)(CO)]·0.5C(3)H(6)O, has two different complex molecules in the asymmetric unit, with the Rh(I) atoms in slightly distorted square-planar coordination environments. The molecules are packed as two monomeric mol-ecules with one acetone solvent mol-ecule sitting at the centre.
ABSTRACT
The title compound, [PdCl(2){P(C(6)H(11))(2)(C(6)H(5))}(2)], forms a monomeric complex with a trans-square-planar geometry. The Pd-P bond lengths are 2.3343â (5)â Å, as the Pd atom lies on an inversion centre, while the Pd-Cl bond lengths are 2.3017â (4)â Å. The observed structure was found to be closely related to [PdCl(2){P(C(6)H(11))(3)}(2)] [Grushin et al. (1994 â¶). Inorg. Chem.33, 4804-4806], [PdBr(2){P(C(6)H(11))(3)}(2)] [Clarke et al. (2003 â¶). Dalton Trans. pp. 4393-4394] and [PdCl(2)P(C(6)H(11))(2)(C(7)H(7))}(2)] [Vuoti et al. (2008 â¶). Eur. J. Inorg. Chem. pp. 397-407] (C(6)H(11) is cyclo-hexyl and C(7)H(7) is o-tol-yl). One of the cyclo-hexyl rings is disordered with the phenyl ring in a 0.587â (9):413â (9) ratio. Five long-range C-Hâ¯Cl inter-actions were observed within the structure.
ABSTRACT
In the title compound, trans-[RhCl(C(20)H(17)P)(2)(CO)], the Rh(I) atom is situated on a center of symmetry, resulting in a statistical 1:1 disorder of the chloride [Rh-Cl = 2.383â (2)â Å] and carbonyl [Rh-C = 1.752â (7)â Å] ligands. The distorted trans square-planar environment is completed by two P atoms [Rh-P = 2.3251â (4)â Å] from two diphen-yl(4-vinyl-phen-yl)phosphane ligands. The vinyl group is disordered over two sets of sites in a 0.668â (10):0.332â (10) ratio. The crystal packing exhibits weak C-Hâ¯Cl and C-Hâ¯O hydrogen bonds and π-π inter-actions between the phenyl rings of neighbouring mol-ecules, with a centroid-centroid distance of 3.682â (2)â Å.
ABSTRACT
The title compound, [PdCl(2)(C(21)H(33)P)(2)], forms a monomeric complex with a trans-square-planar coordination geometry about the Pd(II) atom which lies on an inversion centre. The Pd-P bond lengths are 2.3760â (13)â Å, while the Pd-Cl bond lengths are 2.3172â (14)â Å. The observed structure was found to be closely related to that of trans-dichloridobis[dicyclo-hex-yl(phen-yl)phosphane-κP]palladium(II), [PdCl(2){P(C(6)H(11))(2)(C(6)H(5))}(2)] [Burgoyne et al. (2012 â¶). Acta Cryst. E68, m404].
ABSTRACT
The title compound, [PtCl(2)(C(20)H(17)P)(2)], forms a monomeric cis-square-planar geometry. The Pt-P bond lengths are 2.2489â (9) and 2.2627â (9)â Å, whereas the Pt-Cl bond lengths are 2.3566â (9) and 2.3336â (9)â Å.
