List of Titles

Authors: Nassimbeni, L R , Orpen, G , Pauptit, R A , Rodgers, Allen L , Haigh, John M
Date: 1977
Language: English
Type: text , Article
Identifier: vital:6416 , http://hdl.handle.net/10962/d1006533
Description: Introduction: In a previous analysis of a compound of this type, we have established that the adduct molecule is bonded through O and that the geometry about U is pentagonal bipyramidal (Haigh, Nassimbeni, Pauptit, Rodgers & Sheldrick, 1976). We have carried out the present analysis to study the conformational effects on the ligand brought about by substitution at N.
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Date Issued: 1977

Authors: Rodgers, A L , Nassimbeni, L R , Haigh, John M
Date: 1977
Language: English
Type: text , Article
Identifier: vital:6419 , http://hdl.handle.net/10962/d1006552
Description: Introduction: In two earlier structural determinations of compounds of this type we have shown that the conformation of the adduct moiety is dependent on the formation of intramolecular N-H...0 hydrogen bonds (part I: Haigh, Nassimbeni, Pauptit, Rodgers & Sheldrick, 1976; part II: Nassimbeni, Orpen, Pauptit, Rodgers & Haigh, 1977). We have carried out the present analysis to study the conformational effects on the ligand brought about by the steric influence of an isopropyl substituent at N.
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Date Issued: 1977

Authors: Rodgers, A L , Nassimbeni, L R , Pauptit, R A , Orpen, G , Haigh, John M
Date: 1977
Language: English
Type: text , Article
Identifier: vital:6420 , http://hdl.handle.net/10962/d1006555
Description: Introduction: We have shown in three earlier determinations of aliphatic amine adducts of U02(AA)2 (part I: Haigh, Nassimbeni, Pauptit, Rodgers & Sheldrick, 1976; part II: Nassimbeni, Orpen, Pauptit, Rodgers & Haigh, 1977; part III: Rodgers, Nassimbeni & Haigh, 1977) that the conformation of the adduct is dependent on its ability to form hydrogen bonds. The present compound has two H atoms available for hydrogen bonding and may be regarded as the parent of the series.
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Date Issued: 1977

Authors: Nassimbeni, L R , Rodgers, Allen L , Haigh, John M
Date: 1976
Language: English
Type: text , Article
Identifier: vital:6415 , http://hdl.handle.net/10962/d1006526
Description: The structure of the title compound [(C7H4NO8U)(C7H11N2)]2 has been determined by Patterson and Fourier methods from single crystal X-ray diffraction data collected on a four-circle diffractometer. Full-matrix least-squares refinement yielded a final conventional R of 0.041 for 2189 reflections. The complex crystallizes in the space group P with a = 11.004(5), b = 9.981(5), c = 9.928(5) Å, α = 119.6(3), β = 107.7(3), γ = 81.9(3)°, Dm = 2.17, Dc = 2.173g cm−3. The structure is dimeric. The uranium atoms are eight-coordinate and are bridged via centrosymmetrically related carboxylic oxygen atoms. The nitrate group is bidentate and the average U---O (ligand) distance is 2.463 Å. Hydrogen bonding of the type N---HO links two dimethyl-aminopyridine molecules to the dimer.
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Date Issued: 1976

Authors: Nassimbeni, L R
Date: 1963
Subjects: Permanganates -- Crystallography , X-rays -- Diffraction , Crystals -- Piezoelectricity , Pyroelectricity
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:4484 , http://hdl.handle.net/10962/d1012942
Description: The crystal structure of caesium permanganate has been determined. CsMn0₄ crystallises in the orthorhombic space group Pnma. There are four molecules per unit cell with a = 10.0692 Å, b = 5.8080 Å, c = 7.9470 Å. The structure was determined by Fourier syntheses on the (010) and (001) projections and refined by two-dimensional difference syntheses. The structure is similar to that of KMn0₄. The manganese is surrounded by four oxygen atoms at an average distance of 1.629 Å arranged in a slightly distorted tetrahedron. The caesium is surrounded by eight manganese atoms at an average distance of 4.381 Å.
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Date Issued: 1963

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