Crystal and molecular structure of a DNA fragment containing a 2-aminoadenine modification: the relationship between conformation, packing, and hydration in Z-DNA hexamers

Biochemistry ◽  
1992 ◽  
Vol 31 (40) ◽  
pp. 9622-9628 ◽  
Author(s):  
Bohdan Schneider ◽  
Stephan L. Ginell ◽  
Roger Jones ◽  
Barbara Gaffney ◽  
Helen M. Berman
1986 ◽  
Vol 41 (10) ◽  
pp. 1211-1218 ◽  
Author(s):  
Franz-Erich Baumann ◽  
Christian Burschka ◽  
Wolfdieter A . Schenk

Abstract Mo(CO)2(PPh3)2(MeCN)(η2-SO2), reacts with a number of unidentate or tridentate phosphines with displacement of both MeCN and PPh3. Mixtures of up to three different isomers are obtained the structures of which are assigned by IR , 1H, 13C, and 31PNMR , and in one case by X-ray crystallography. The results support earlier observations concerning the relationship between the disposition of donor and acceptor ligands around the metal and the bonding mode of SO2 .


Biochemistry ◽  
1991 ◽  
Vol 30 (18) ◽  
pp. 4449-4455 ◽  
Author(s):  
Narendra Narayana ◽  
Stephan L. Ginell ◽  
Irina M. Russu ◽  
Helen M. Berman

1982 ◽  
Vol 47 (9) ◽  
pp. 2403-2414 ◽  
Author(s):  
Jindřich Hašek ◽  
Karel Huml ◽  
Jiří Ječný ◽  
Rudolf Puffr

The title compound crystallizes in the monoclinic system, has the P21/c space group, and the unit cell parameters are a = 1 484.4(8), b = 1 522.8(8), c = 1 854.0(8) pm, β = 96.36(4)°, Z = 4. The structure consists of molecules of an electroneutral complex interconnected only through the van der Waals forces. Solvent is nonstoichiometrically incorporated in the crystals. Octanolactam monodentate ligands are coordinated through oxygen atoms to Cr(III) and have the cis-conformation of the amide group. The relationship between structure parameters of the amide group, their change caused by coordination and the reactivity of the amide group to nucleophilic substitution are discussed using the example of octanolactam polymerization.


Biochemistry ◽  
1995 ◽  
Vol 34 (47) ◽  
pp. 15487-15495 ◽  
Author(s):  
Gary N. Parkinson ◽  
Georgia M. Arvanitis ◽  
Leslie Lessinger ◽  
Stephan L. Ginell ◽  
Roger Jones ◽  
...  

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