• Thumbnail for Macrocycle
    Macrocycles are often described as molecules and ions containing a ring of twelve or more atoms. Classical examples include the crown ethers, calixarenes...
    33 KB (3,878 words) - 01:16, 24 May 2025
  • Thumbnail for Porphyrin
    subunits with the nitrogen atoms facing outwards from the core of the macrocycle. A porphyrin-related disease: porphyria Porphyrin coordinated to iron:...
    25 KB (2,293 words) - 17:48, 27 May 2025
  • hemoglobin and chlorophyll. In these two molecules, in particular, the pyrrole macrocycle ring frames a metal atom, that forms a coordination compound with the...
    3 KB (287 words) - 00:54, 26 March 2025
  • Thumbnail for Cyclic compound
    regular use.[citation needed] The term macrocycle is used for compounds having a rings of 8 or more atoms. Macrocycles may be fully carbocyclic (rings containing...
    25 KB (2,814 words) - 16:18, 22 May 2025
  • time up into three types of cycles: microcycle, mesocycle, and macrocycle. A macrocycle refers to a season of training in its entirety. It is an annual...
    20 KB (2,550 words) - 18:53, 24 May 2025
  • Thumbnail for Gold
    Michel (1999). "Gold(I) and Gold(0) Complexes of Phosphinine-Based Macrocycles". Angewandte Chemie International Edition. 38 (21): 3194–3197. doi:10...
    144 KB (16,245 words) - 19:23, 24 May 2025
  • Thumbnail for Rotaxane
    consisting of a dumbbell-shaped molecule which is threaded through a macrocycle (see graphical representation). The two components of a rotaxane are kinetically...
    18 KB (1,842 words) - 20:48, 3 May 2025
  • Calixarene (category Macrocycles)
    the hydrocarbon cyclo{oligo(1,3-phenylene)methylene}. A calixarene is a macrocycle or cyclic oligomer based on a methylene-linked phenols. With hydrophobic...
    19 KB (2,105 words) - 15:17, 23 May 2025
  • Thumbnail for Cyclic peptide
    Cyclic peptides are polypeptide chains which contain a circular sequence of bonds. This can be through a connection between the amino and carboxyl ends...
    9 KB (989 words) - 14:50, 24 May 2025
  • as covalent organic frameworks, molecular knots, polymers, and novel macrocycles. Not to be confused with dynamic combinatorial chemistry, DCvC concerns...
    18 KB (2,006 words) - 05:38, 25 May 2025
  • Thumbnail for Pillararene
    Pillararene (category Macrocycles)
    Pillararenes are macrocycles composed of hydroquinone or dialkoxybenzene units (5 to 10) linked in the para position by methylene bridges. They are structurally...
    17 KB (2,395 words) - 01:01, 18 April 2025
  • Thumbnail for Catenane
    Catenane (category Macrocycles)
    interlocked molecular architecture consisting of two or more interlocked macrocycles, i.e. a molecule containing two or more intertwined rings. The interlocked...
    13 KB (1,377 words) - 00:03, 11 October 2024
  • Thumbnail for Supramolecular chemistry
    thermodynamically or kinetically unlikely, such as in the preparation of large macrocycles. This pre-organization also serves purposes such as minimizing side reactions...
    35 KB (3,883 words) - 07:48, 12 May 2025
  • Thumbnail for Macromolecule
    carbohydrates) and large non-polymeric molecules such as lipids, nanogels and macrocycles. Synthetic fibers and experimental materials such as carbon nanotubes...
    19 KB (2,145 words) - 04:24, 14 March 2025
  • Thumbnail for Conjugated system
    charge-transfer complexes. Porphyrins have conjugated molecular ring systems (macrocycles) that appear in many enzymes of biological systems. As a ligand, porphyrin...
    35 KB (4,303 words) - 09:26, 15 May 2025
  • Thumbnail for Corrole
    Corrole (category Macrocycles)
    Cobalamin structure includes a deprotonated corrin macrocycle....
    7 KB (728 words) - 14:15, 20 May 2024
  • Thumbnail for Chromophore
    of the macrocycle ring absorbs visible light. The nature of the central metal can also influence the absorption spectrum of the metal-macrocycle complex...
    11 KB (1,111 words) - 06:07, 5 May 2025
  • Thumbnail for Gadoteric acid
    Gadoteric acid, sold under the brand name Dotarem among others, is a macrocycle-structured gadolinium-based MRI contrast agent (GBCA). It consists of the...
    11 KB (848 words) - 15:48, 21 August 2024
  • Thumbnail for Organic chemistry
    most stable rings contain five or six carbon atoms, but large rings (macrocycles) and smaller rings are common. The smallest cycloalkane family is the...
    38 KB (4,341 words) - 23:30, 7 May 2025
  • Thumbnail for Ligand
    iron atom is at the centre of a porphyrin macrocycle, bound to four nitrogen atoms of the tetrapyrrole macrocycle. The very stable dimethylglyoximate complex...
    35 KB (3,307 words) - 14:02, 22 November 2024
  • Thumbnail for Corrin
    Corrin (category Macrocycles)
    known to exist on its own, the molecule is of interest as the parent macrocycle related to the cofactor and chromophore in vitamin B12. Its name reflects...
    5 KB (401 words) - 14:15, 10 April 2025
  • Retrieved 2020-06-08. Zhang W, Moore JS (July 2006). "Shape-persistent macrocycles: structures and synthetic approaches from arylene and ethynylene building...
    872 bytes (86 words) - 03:38, 20 December 2020
  • Thumbnail for Cobalamin biosynthesis
    aerobic organisms) and whether oxygen is required. In both cases, the macrocycle that will form a coordination complex with the cobalt ion is a corrin...
    36 KB (3,664 words) - 22:48, 18 March 2025
  • Thumbnail for Porphine
    Porphine (category Macrocycles)
    formula C20H14N4. It is heterocyclic and aromatic. The molecule is a flat macrocycle, consisting of four pyrrole-like rings joined by four methine bridges...
    5 KB (384 words) - 09:28, 1 April 2025
  • natural products such as heme. Pyrroles are components of more complex macrocycles, including the porphyrinogens and products derived therefrom, including...
    34 KB (3,197 words) - 22:33, 22 May 2025
  • Thumbnail for Cycloparaphenylene
    equivalent of the diiodide produced macrocycles in low yields which could be separated by column chromatography. These macrocycles were then reductively aromatized...
    24 KB (2,675 words) - 23:47, 26 May 2025
  • Thumbnail for Molecular Borromean rings
    molecular architecture in which three macrocycles are interlocked in such a way that breaking any macrocycle allows the others to dissociate. They are...
    7 KB (606 words) - 14:13, 25 May 2025
  • Thumbnail for Bottromycin
    the macrocycle. In this study, it was proposed that the methylated proline residue contributed to the restricted conformation of the macrocycle. The...
    30 KB (3,272 words) - 07:16, 19 December 2023
  • Thumbnail for Phthalocyanine
    Phthalocyanine (category Macrocycles)
    derivatives of the parent phthalocyanine, where either carbon atoms of the macrocycle are exchanged for nitrogen atoms, such as tetrapyrazinoporphyrazine, or...
    21 KB (1,937 words) - 21:04, 22 May 2025
  • Thumbnail for Vitamin B12
    E (May 1980). "Biosynthesis of the pigments of life: formation of the macrocycle". Nature. 285 (5759): 17–21. Bibcode:1980Natur.285...17B. doi:10.1038/285017a0...
    110 KB (11,943 words) - 17:24, 17 May 2025