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Summary Geometry Related PDB entries

CQ4

Bonds

First atom	Second atom	Bond order type	Distance (experimental model)	Distance (ideal model)	Properties
O3	CR	doub	1.66Å	1.67Å
O4	CR	doub	1.66Å	1.70Å
CR	O2	sing	1.66Å	1.69Å
CR	O1	sing	1.66Å	1.68Å

Angles

First atom	Second atom	Third atom	Angle (experimental model)	Angle (ideal model)
O3	CR	O4	109.9°	109.5°
O3	CR	O2	106.1°	109.5°
O3	CR	O1	110.4°	109.5°
O4	CR	O2	110.1°	109.5°
O4	CR	O1	108.3°	109.5°
O2	CR	O1	112.1°	109.5°

Dihedrals

First atom	Second atom	Third atom	Fourth atom	Torsion (experimental model)	Torsion (ideal model)
O3	CR	O4	O2	116.5°	120.0°
O3	CR	O4	O1	120.6°	120.0°
O3	CR	O2	O1	120.5°	120.0°
O4	CR	O2	O1	120.6°	120.0°

247536

PDB entries from 2026-01-14

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