The reactions of S(1 D) atoms with cyanogen and acetylene

McGrath, W.D.; Morrow, Thomas; Dempster, D. N.

doi:10.1039/c19670000516

Cited by 6 publications

(14 citation statements)

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“…Chrysotalunin (1): orange amorphous solid; HREIMS 506.1011 (calcd for C 30 H 18 O 8, 506.1000); [α] D 0° (CHCl 3 ); other spectroscopic data (EIMS, UV, IR) were in agreement with literature data …”

Section: Methodssupporting

confidence: 83%

“…A kind of graveyard and/or a life stage of the whole terrestrial biosis, soil may be expected to contain almost any natural anthraquinone. The best-known soil anthraquinone, however, is a dimeric compound, chrysotalunin (7,7‘-bichrysophanol, 1 ), detected in soils throughout the world, but only from a soil source. − Recently, we found (−)-7,7‘-biphyscion ( 2 ), a dimer anthraquinone that is structurally similar to 1 , which also occurs in soil samples from Japan , this compound has not been found previously in Japan.…”

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confidence: 73%

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Predomination of Dimers over Naturally Occurring Anthraquinones in Soil

et al. 1998

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Four bianthraquinones and two monoanthraquinones were isolated as the major soil anthraquinones from a volcanic ash soil in Japan. They were identified as a new natural product 5,5'-biphyscion (named hinakurin) (3) and five known compounds, chrysotalunin (1), (-)-7,7'-biphyscion (2), microcarpin (4), chrysophanol (5), and physcion (6) using MS, 1D NMR, and 2D NMR techniques. Although the dimers (1-4) are rarely found as natural products, they, along with 5 and 6, were ubiquitous and predominant over other anthraquinones in various soils from Japan and Nepal.

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Section: Methodssupporting

confidence: 83%

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confidence: 73%

Predomination of Dimers over Naturally Occurring Anthraquinones in Soil

et al. 1998

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“…Although no quantitative data are yet available, McGrath et al (1967) have observed NCS in absorption following COS/C 2 N 2 photolysis and conclude that an insertion reaction producing this and CN may be responsible.…”

Section: Discussionmentioning

confidence: 91%

Critically evaluated rate constants for gaseous reactions of several electronically excited species

Schofield¹

1979

Journal of Physical and Chemical Reference Data

187

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An extensive evaluation is presented of the available gas phase chemical kinetic rate constants for the interac· tions of the low lying electronic states of several atoms and molecules with numerous collision partners. These include the following excited states: C(2 1 D 2 ,2 1 S o ), N(2 2 D31l,5/2, 2 2 P1I1, 3/2), P(32D3/2,51l,32Pl/2,3/2), S(3 1 D 2 ,3 I S 0 ), Se(4 S P o ' 4 1 D 2 ,4 1 S 0 ), Te(53PI,o,51D2,5ISo)' COCa an, a'3I;+,d aA,e 3I;-,A III), CS(a all, A III), OH(A 2I;+), OD(A 2£+), 02(C lE~,C 3A u .A 3I;~,B 3r;~), and S2(a IAg,b lE;,A ar;~,B ar;~). Wherever possible, recommended values are suggested. Much of the data refers only to room temperature. To facilitate the evaluation, colJision·free radiative lifetimes often have been required. These also have been evaluated and are presented. The mechanisms of the interactions and the various potential kinetic channels are discussed. These include such processes as chemical reactions, electronic quenching to the ground electronic state, electronic cross relaxation to an adjacent excited state, and for molecules, vibrational and rotational relaxation processes within the excited state. A complete coverage of the literature published prior to 1978 has been attempted.

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“…9 ,al.32 However, since there is no net decomposition of CS 2 observed, Reaction (11) would have to occur with 100% efficiency, a rather unlikely possibility in view of the known tendency of CS to polymerize in similar systems. S3 Also, because of Reaction (6b) the S", species in Reaction (11) would likely derive their isotopic content from both OCS and CS 2 .…”

Section: Photolysis At 2537 Amentioning

confidence: 99%

“…A reasonable alternative to this proposal would be the reaction (6b) followed by some reaction leading to net exchange, such as (11) 0.5 The reaction of O(3P) with CS 2 occurs readily by the path analogous to reaction (6b) , 30 and recent thermochemical data indicate that Reaction (6b) is about 8 kcal/mole exothermic. 9 ,al.32 However, since there is no net decomposition of CS 2 observed, Reaction (11) would have to occur with 100% efficiency, a rather unlikely possibility in view of the known tendency of CS to polymerize in similar systems.…”

Section: Photolysis At 2537 Amentioning

confidence: 99%

Some Reactions of Ground-State (3P) and Electronically Excited (1D) Sulfur Atoms

Breckenridge

Taube

1970

The Journal of Chemical Physics

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Articles you may be interested inAn experimental and computational study of the reaction of ground-state sulfur atoms with carbon disulfideThe systematic behavior of (6Li,d) groundstate transitions in the 1f2p shell AIP Conf.Reactions of S (3 P) and S (1D) have been studied by utilizing carbonyl sulfide photolysis as a source of both species. It has been shown that 46%±4% of the sulfur atoms generated in the photolysis of OCS in the 2250-2650-A spectral region can react as S (3 P), but that substantial portion of the S (3]') is likely produced by deactivating collisions of OCS molecules with S(ID). Both S(1D) and S(,1') react with CS,. The rate constant ratios for these reactions relative to the reactions with OCS have been determined as ~1.9 and ~2.4X102, respectively. Efficient isotopic exchange of S(3P) with CS2 is proposed to occur by means of CS3 formation in a reaction independent of pressure above 50 torr. The reaction of S (ID) with N20 yields N2, but kinetic complexities suggest the intermediate formation of a species such as N20S. Measurement of the quenching of the N2 yield has led to the determination of the relative rates of collisional deactivation of S(ID) for several gases.

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The reactions of S(1 D) atoms with cyanogen and acetylene

Cited by 6 publications

References 0 publications

Predomination of Dimers over Naturally Occurring Anthraquinones in Soil

Predomination of Dimers over Naturally Occurring Anthraquinones in Soil

Critically evaluated rate constants for gaseous reactions of several electronically excited species

Some Reactions of Ground-State (3P) and Electronically Excited (1D) Sulfur Atoms

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