The chemistry of inorganic and organometallic compounds with adamantane-like structures

Vittal, Jagadese J.

doi:10.1016/0277-5387(95)00340-1

Cited by 45 publications

(41 citation statements)

References 520 publications

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“…Memantine and amantadine are derivatives of the cycloalkane, adamantane (which makes up the 10 carbon cage-like backbone in both compounds). Methenamine is an adamantane analogue, and in this, the cage-like backbone includes seven carbons and three nitrogens 9. In healthy subjects, amantadine results in an increase in circulating norepinephrine, and a decrease in epinephrine, dopamine and serotonin 10.…”

Section: Discussionmentioning

confidence: 99%

The reversible cerebral vasoconstriction syndrome in association with venlafaxine and methenamine

et al. 2013

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The reversible cerebral vasoconstriction syndrome (RCVS) is characterised by thunderclap headache and multifocal vasoconstriction of cerebral arteries on angiography. It is often drug induced, but it can occur postpartum, and as a result of a number of other precipitants. To make the diagnosis, it is necessary to exclude other causes of severe headache (such as aneurysmal subarachnoid haemorrhage, carotid dissection and primary angiitis of the central nervous system). However, it is also important to show that the vasoconstriction has resolved with repeat angiography at the 3-month stage. Here we report two cases of RCVS in association with venlafaxine and the urinary antiseptic, methenamine. Serotonin-norepinephrine reuptake inhibitors have recently been reported as a possible precipitant, but this is the first report to implicate methenamine. Although RCVS is relatively uncommon, it should be considered in the differential of those presenting with thunderclap headache.

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Section: Discussionmentioning

confidence: 99%

The reversible cerebral vasoconstriction syndrome in association with venlafaxine and methenamine

et al. 2013

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“…It is known that oxidative addition of the Sn(IV)-E bonds in the ring compounds [(R 2 SnE) 3 ] (R = Me, Ph) to complex 1 occurs easily, giving interesting platinum(IV) complexes containing PtESnESn rings (3). By analogy, it was considered possible that oxidative addition of the Hg(II)-E bonds of the adamantanoid compounds [Hg 4 (EPh) 6 (L) 4 ][ClO 4 ] 2 (2a-d) (Chart 1), might give novel cage complexes containing platinum(IV) centres (4,5).…”

Section: Introductionmentioning

confidence: 99%

Cationic thiolate and selenolate complexes of platinum(IV)

Janzen¹,

Jennings²,

Puddephatt³

2002

Can. J. Chem.

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The reaction of the adamantanoid compounds [Hg 4 (EPh) 6 (L) 4 ][ClO 4 ] 2 (E = S or Se, L = PEt 3 or PPh 3 ) with [PtMe 2 (bu 2 bpy)] (bu 2 bpy = 4,4′-di-tert-butyl-2,2′-bipyridine) occurs easily to give the first examples of cationic thiolate or selenolate derivatives of platinum(IV), [PtMe 2 (EPh)L(bu 2 bpy)][ClO 4 ], and the addition is shown to occur with trans stereochemistry. The new complexes are characterized by NMR spectroscopy and when L = PEt 3 by X-ray structure determinations. When L = PPh 3 , a competitive reaction leads to methyl group transfer from platinum to mercury to give MeHgEPh (E = S or Se). Résumé: La réaction de composés adamantanoïdes [Hg 4 (EPh) 6 (L) 4 ][ClO 4 ] 2 (E= S ou Se, L = PEt 3 ou PPh 3 ) avec [PtMe 2 (bu 2 bpy)] (bu 2 bpy = 4,4′-di-tert-butyl-2,2′-bipyridine) se produit facilement pour fournier les premiers exemples de dérivés thiolates ou sélénolates cationiques du platine(IV), [PtMe 2 (EPh)L(bu 2 bpy)][ClO 4 ] et on a observé que l'addition se produit avec une stéréochimie trans. Les nouveaux complexes ont été caractérisés par spectroscopie RMN et, lorsque L = PEt 3 , par diffraction des rayons X. Lorsque L = PPh 3 , une réaction parallèle conduit à un transfert de groupe méthyle à partir du platine vers le mercure pour donner le MeHgEPh (E = S ou Se).

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“…No 1:1 cationic complex has so far been crystallographically characterised. [11] The adamantane-like tetrahedral cage M 4 (µ-S) 6 , which is the most frequently encountered structural unit in polynuclear thiolates, [12,13] is also present in cationic thioamide complexes. This tetrahedral cage is known to exist, with no terminal ligands and thus with trigonal coordination of all four metal atoms, in [Cu 4 L 6 ] 4ϩ species [L ϭ tu (thiourea), [14,15] thpym2tH 2 (tetrahydropyrimidine-2-thione), [16] and with the accommodation of some terminal ligands and both tetrahedral and trigonal metal sites in complexes [Cu 4 -(tu) 7 ](SO 4 ) 2 , [17] [Cu 4 (tu) 9 ](NO 3 ) 4 , [18] and [{Cu 4 (tu) 6 (tu) 3/2 } (SO 4 ) 2 ] n .…”

Section: Introductionmentioning

confidence: 99%

“…[44] The chemical shifts of these [8.90 (1), 14.10 (2) ppm], as well as their positive coordination shifts, reflect, as in the IR spectra, the relevant contribution of the immonium-thiolate resonance form in both complexes. 13 C NMR spectra are more sensitive to S-donation, the carbon atom of the thione group being the most affected, with high-field coordination shifts [45,46] of δ ϭ Ϫ5.2 and Ϫ10.2 ppm, respectively, for complexes 1 and 2.…”

mentioning

confidence: 98%

Hydrogen‐Bonded Network and Layered Supramolecular Structures Assembled from ClO₄⁻ Counterions with Unprecedented Monomeric [AgL₂]⁺ and Chain Polymeric [AgL₂]_nⁿ⁺ Complex Cations (L = Thioamide or Thiourea‐Like Ligands)

et al. 2004

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Keywords: X-ray diffraction / Silver / Supramolecular chemistry / S ligands / Bridging ligands + cation and all four oxygen atoms of each ClO 4 − anion involved in N−H···O−Cl hydrogen bonding associations. This leads to the assembly of a three-dimensional supramolecular network. Complex 2, whose previously reported structure has been redetermined with higher precision, contains catena-[Ag(py2tH) 2 ] n n+ polymeric cations consisting of linear chains

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The chemistry of inorganic and organometallic compounds with adamantane-like structures

Cited by 45 publications

References 520 publications

The reversible cerebral vasoconstriction syndrome in association with venlafaxine and methenamine

The reversible cerebral vasoconstriction syndrome in association with venlafaxine and methenamine

Cationic thiolate and selenolate complexes of platinum(IV)

Hydrogen‐Bonded Network and Layered Supramolecular Structures Assembled from ClO₄⁻ Counterions with Unprecedented Monomeric [AgL₂]⁺ and Chain Polymeric [AgL₂]_nⁿ⁺ Complex Cations (L = Thioamide or Thiourea‐Like Ligands)

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The chemistry of inorganic and organometallic compounds with adamantane-like structures

Cited by 45 publications

References 520 publications

The reversible cerebral vasoconstriction syndrome in association with venlafaxine and methenamine

The reversible cerebral vasoconstriction syndrome in association with venlafaxine and methenamine

Cationic thiolate and selenolate complexes of platinum(IV)

Hydrogen‐Bonded Network and Layered Supramolecular Structures Assembled from ClO4− Counterions with Unprecedented Monomeric [AgL2]+ and Chain Polymeric [AgL2]nn+ Complex Cations (L = Thioamide or Thiourea‐Like Ligands)

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Hydrogen‐Bonded Network and Layered Supramolecular Structures Assembled from ClO₄⁻ Counterions with Unprecedented Monomeric [AgL₂]⁺ and Chain Polymeric [AgL₂]_nⁿ⁺ Complex Cations (L = Thioamide or Thiourea‐Like Ligands)