1970
DOI: 10.1107/s0567740870004132
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The crystal and molecular structure of methyl β-cellobioside–methanol

Abstract: Methyl fl-cellobioside-methanol (C13OI1H24.CH3OH) has space group P21 with two molecules per unit cell. The lattice parameters are a=7.652, b=25.532, c=4.496 A, and fl= 101"84 ° at the experimental temperature of about -193°C. The structure was solved by means of the symbolic addition technique and Fourier syntheses. Block-diagonal least-squares refinement resulted in a final R index of 0"060 for 1724 reflections. The C(5)-C(6) and C(5')-C(6") bonds are shorter than the average carboncarbon bond in the corresp… Show more

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Cited by 131 publications
(52 citation statements)
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“…than those in the ring in agreement with the observation of Ham & Williams (1970). The exocyclic C-O distances excluding the anomeric and bridge C-O bonds range from 1.424 to 1.427 ,/k, averaging 1.425 A.…”
Section: The Crystal and Molecular Structure Of A-maltosesupporting
confidence: 77%
See 1 more Smart Citation
“…than those in the ring in agreement with the observation of Ham & Williams (1970). The exocyclic C-O distances excluding the anomeric and bridge C-O bonds range from 1.424 to 1.427 ,/k, averaging 1.425 A.…”
Section: The Crystal and Molecular Structure Of A-maltosesupporting
confidence: 77%
“…A similar trend was observed in methyl fl-maltopyranoside , /]-lactose (Hirotsu & Shimada, 1974), and fl-cellobiose (Chu & Jeffrey, 1968). However, in methyl fl-ceUobioside (Ham & Williams, 1970), these distances are nearly equal (< la) in both rings. In a-lactose (Fries, Rao & Sundaralingam, 1971), the same pattern of C(1)-O(5) < C(5)-O(5) is found for the unprimed ring, while the reverse trend C(l')-O(5') > C(5')-O(5'), is found in the primed ring.…”
Section: The Crystal and Molecular Structure Of A-maltosementioning
confidence: 98%
“…There is no direct intramolecular hydrogen bonding such as is found in sucrose (Brown & Levy, 1963), cellobiose (Chu & Jeffrey, 1968), methyl-fl-cellobioside-methanol (Ham & Williams, 1970), p-maltose monohydrate (Quigley, Sarko & Marchessault, 1971), methyl-fl-maltoside monohydrate (Chu & Jeffrey, 1967), and fl-lactose monohydrate (Fries, Rao & Sundaralingam, 1971). However, water molecule W(1) is linked by hydrogen bonding both to 0(2) and to O'(4), and molecule W(2) is linked both to 0(2) and to O'(6), all within the same trehalose molecule.…”
Section: Discussionmentioning
confidence: 99%
“…The conformation of the xylobiose residue of the trisaccharide was of interest because it could be compared to the minimum energy conformation position defined by potential energy functions for a xylobiose disaccharide (Sundararajan & Rao, 1969). In addition, the orientation of the two rings could also be compared to the conformation of the other/~-l,4-linked disaccharide structures, cellobiose (Chu & Jeffrey, 1968), methyl ,8-cellobioside (Ham & Williams, 1970), and a-lactose (Fries, Rao & Sundaralingam, 1971), all of which contain an intramoleculal hydrogen bond between 0(3') and 0(5). An examination of the orientation of the 4-O-methyl-o-glucuronic acid ring with respect to the xylobiose backbone was also of interest in that it could provide some information as to how this ring might be oriented in the polymer as a single branched unit.…”
Section: Introductionmentioning
confidence: 99%