Structural and conformational effects on the complexation of calcium by 2,3-dicarboxy derivatives of [beta]-cyclodextrin (cyclomaltoheptaose), amylose, and cellulose

M. Floor; J.A. Peters; H. van Bekkum; A.P.G. Kieboom; J.H. Koek; F.L.M. Smeets; R.E. Niemantsverdriet

doi:10.1016/0008-6215(90)80042-2

Structural and conformational effects on the complexation of calcium by 2,3-dicarboxy derivatives of [beta]-cyclodextrin (cyclomaltoheptaose), amylose, and cellulose

M. Floor
, J.A. Peters
, H. van Bekkum
, A.P.G. Kieboom
, J.H. Koek
, F.L.M. Smeets
, R.E. Niemantsverdriet

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

The conformational effects upon complexation of calcium (II) and lanthanide (III) ions by 2,3-dicarboxy-[beta]-cyclodextrin (DC-[beta]CD) have been studied by 1H-, 13C-, and 17O-n.m.r. spectroscopy. The complexation of Ca2+ by DC-[beta]CD involves conformational transitions at metal/ligand ratios ([rhov]) of 0.25 and 0.5 with predominant changes in the resonances of C-1,4,5. For the La3-DC-[beta]CD complex (up to [rhov] 0.3), a structure involving two La3+ per DC-[beta]CD macrocycle, each coordinated to 8 oxygen atoms, is proposed. Optical rotation data indicated similar conformational behaviour on complexation of Ca2+ with DC-[beta]CD and dicarboxyamylose (DCA), whereas dicarboxycellulose (DCC) showed a substantially larger change in conformation. Static and dynamic light scattering indicated aggregation of DCA and DCC on complexation with Ca2+, with a concomitant reduction of the hydrodynamic radius (Rh).

Original language	English
Pages (from-to)	19-32
Number of pages	14
Journal	Carbohydrate Research
Volume	203
Issue number	1
DOIs	https://doi.org/10.1016/0008-6215(90)80042-2
Publication status	Published - 1990

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Floor, M., Peters, J. A., van Bekkum, H., Kieboom, A. P. G., Koek, J. H., Smeets, F. L. M., & Niemantsverdriet, R. E. (1990). Structural and conformational effects on the complexation of calcium by 2,3-dicarboxy derivatives of [beta]-cyclodextrin (cyclomaltoheptaose), amylose, and cellulose. Carbohydrate Research, 203(1), 19-32. https://doi.org/10.1016/0008-6215(90)80042-2

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title = "Structural and conformational effects on the complexation of calcium by 2,3-dicarboxy derivatives of [beta]-cyclodextrin (cyclomaltoheptaose), amylose, and cellulose",

abstract = "The conformational effects upon complexation of calcium (II) and lanthanide (III) ions by 2,3-dicarboxy-[beta]-cyclodextrin (DC-[beta]CD) have been studied by 1H-, 13C-, and 17O-n.m.r. spectroscopy. The complexation of Ca2+ by DC-[beta]CD involves conformational transitions at metal/ligand ratios ([rhov]) of 0.25 and 0.5 with predominant changes in the resonances of C-1,4,5. For the La3-DC-[beta]CD complex (up to [rhov] 0.3), a structure involving two La3+ per DC-[beta]CD macrocycle, each coordinated to 8 oxygen atoms, is proposed. Optical rotation data indicated similar conformational behaviour on complexation of Ca2+ with DC-[beta]CD and dicarboxyamylose (DCA), whereas dicarboxycellulose (DCC) showed a substantially larger change in conformation. Static and dynamic light scattering indicated aggregation of DCA and DCC on complexation with Ca2+, with a concomitant reduction of the hydrodynamic radius (Rh).",

author = "M. Floor and J.A. Peters and \{van Bekkum\}, H. and A.P.G. Kieboom and J.H. Koek and F.L.M. Smeets and R.E. Niemantsverdriet",

year = "1990",

doi = "10.1016/0008-6215(90)80042-2",

language = "English",

volume = "203",

pages = "19--32",

journal = "Carbohydrate Research",

issn = "0008-6215",

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TY - JOUR

T1 - Structural and conformational effects on the complexation of calcium by 2,3-dicarboxy derivatives of [beta]-cyclodextrin (cyclomaltoheptaose), amylose, and cellulose

AU - Floor, M.

AU - Peters, J.A.

AU - van Bekkum, H.

AU - Kieboom, A.P.G.

AU - Koek, J.H.

AU - Smeets, F.L.M.

AU - Niemantsverdriet, R.E.

PY - 1990

Y1 - 1990

N2 - The conformational effects upon complexation of calcium (II) and lanthanide (III) ions by 2,3-dicarboxy-[beta]-cyclodextrin (DC-[beta]CD) have been studied by 1H-, 13C-, and 17O-n.m.r. spectroscopy. The complexation of Ca2+ by DC-[beta]CD involves conformational transitions at metal/ligand ratios ([rhov]) of 0.25 and 0.5 with predominant changes in the resonances of C-1,4,5. For the La3-DC-[beta]CD complex (up to [rhov] 0.3), a structure involving two La3+ per DC-[beta]CD macrocycle, each coordinated to 8 oxygen atoms, is proposed. Optical rotation data indicated similar conformational behaviour on complexation of Ca2+ with DC-[beta]CD and dicarboxyamylose (DCA), whereas dicarboxycellulose (DCC) showed a substantially larger change in conformation. Static and dynamic light scattering indicated aggregation of DCA and DCC on complexation with Ca2+, with a concomitant reduction of the hydrodynamic radius (Rh).

AB - The conformational effects upon complexation of calcium (II) and lanthanide (III) ions by 2,3-dicarboxy-[beta]-cyclodextrin (DC-[beta]CD) have been studied by 1H-, 13C-, and 17O-n.m.r. spectroscopy. The complexation of Ca2+ by DC-[beta]CD involves conformational transitions at metal/ligand ratios ([rhov]) of 0.25 and 0.5 with predominant changes in the resonances of C-1,4,5. For the La3-DC-[beta]CD complex (up to [rhov] 0.3), a structure involving two La3+ per DC-[beta]CD macrocycle, each coordinated to 8 oxygen atoms, is proposed. Optical rotation data indicated similar conformational behaviour on complexation of Ca2+ with DC-[beta]CD and dicarboxyamylose (DCA), whereas dicarboxycellulose (DCC) showed a substantially larger change in conformation. Static and dynamic light scattering indicated aggregation of DCA and DCC on complexation with Ca2+, with a concomitant reduction of the hydrodynamic radius (Rh).

U2 - 10.1016/0008-6215(90)80042-2

DO - 10.1016/0008-6215(90)80042-2

M3 - Article

SN - 0008-6215

VL - 203

SP - 19

EP - 32

JO - Carbohydrate Research

JF - Carbohydrate Research

IS - 1

ER -

Structural and conformational effects on the complexation of calcium by 2,3-dicarboxy derivatives of [beta]-cyclodextrin (cyclomaltoheptaose), amylose, and cellulose

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